C2S4 QS8 Neon GEMM/IGEMM microkernels.

- Rename existing S4C2 to C2S4 as it isa shuffle variant of the C2 dup microkernel.
- Add QC8 microkernels
- Add all sizes.  Same set of microkernels as C2 and C4, except no gemmlowp.

PiperOrigin-RevId: 408950530
diff --git a/src/qs8-igemm/c2-neon-mull-padal-shuffle.c.in b/src/qs8-igemm/c2-neon-mull-padal-shuffle.c.in
index b03f9b6..ede34b9 100644
--- a/src/qs8-igemm/c2-neon-mull-padal-shuffle.c.in
+++ b/src/qs8-igemm/c2-neon-mull-padal-shuffle.c.in
@@ -24,7 +24,7 @@
 $if REQUANTIZATION == "FP32" and CHANNELWISE and not ARMV8:
   $PARAMS_STRUCT = "neon_fp32"
 $ISA = "neonv8" if ARMV8 else "neon"
-void xnn_${DATATYPE}_igemm_minmax_${REQUANTIZATION.lower()}_ukernel_${MR}x${NR}s4c2__${ISA}_${"mlal" if MLA else "mull"}_padal(
+void xnn_${DATATYPE}_igemm_minmax_${REQUANTIZATION.lower()}_ukernel_${MR}x${NR}c2s4__${ISA}_${"mlal" if MLA else "mull"}_padal(
     size_t mr,
     size_t nc,
     size_t kc,
diff --git a/src/qs8-igemm/gen/1x16c2s4-minmax-rndnu-neon-mlal-padal.c b/src/qs8-igemm/gen/1x16c2s4-minmax-rndnu-neon-mlal-padal.c
new file mode 100644
index 0000000..a45e306
--- /dev/null
+++ b/src/qs8-igemm/gen/1x16c2s4-minmax-rndnu-neon-mlal-padal.c
@@ -0,0 +1,350 @@
+// Auto-generated file. Do not edit!
+//   Template: src/qs8-igemm/c2-neon-mull-padal-shuffle.c.in
+//   Generator: tools/xngen
+//
+// Copyright 2021 Google LLC
+//
+// This source code is licensed under the BSD-style license found in the
+// LICENSE file in the root directory of this source tree.
+
+#include <assert.h>
+
+#include <arm_neon.h>
+
+#include <xnnpack/gemm.h>
+#include <xnnpack/math.h>
+
+
+void xnn_qs8_igemm_minmax_rndnu_ukernel_1x16c2s4__neon_mlal_padal(
+    size_t mr,
+    size_t nc,
+    size_t kc,
+    size_t ks,
+    const int8_t** restrict a,
+    const void* restrict w,
+    int8_t* restrict c,
+    size_t cm_stride,
+    size_t cn_stride,
+    size_t a_offset,
+    const int8_t* zero,
+    const union xnn_qs8_conv_minmax_params params[restrict XNN_MIN_ELEMENTS(1)]) XNN_DISABLE_TSAN XNN_DISABLE_MSAN
+{
+  assert(mr != 0);
+  assert(mr <= 1);
+  assert(nc != 0);
+  assert(kc != 0);
+  assert(ks != 0);
+  assert(ks % (1 * sizeof(void*)) == 0);
+  assert(a_offset % sizeof(int8_t) == 0);
+  assert(a != NULL);
+  assert(w != NULL);
+  assert(c != NULL);
+
+  int8_t* c0 = c;
+
+  do {
+    int32x4_t vacc0x0123 = vld1q_s32(w); w = (const void*) ((uintptr_t) w + 4 * sizeof(int32_t));
+    int32x4_t vacc0x4567 = vld1q_s32(w); w = (const void*) ((uintptr_t) w + 4 * sizeof(int32_t));
+    int32x4_t vacc0x89AB = vld1q_s32(w); w = (const void*) ((uintptr_t) w + 4 * sizeof(int32_t));
+    int32x4_t vacc0xCDEF = vld1q_s32(w); w = (const void*) ((uintptr_t) w + 4 * sizeof(int32_t));
+
+    size_t p = ks;
+    do {
+      const int8_t* restrict a0 = a[0];
+      if XNN_UNPREDICTABLE(a0 != zero) {
+        a0 = (const int8_t*) ((uintptr_t) a0 + a_offset);
+      }
+      a += 1;
+
+      size_t k = kc;
+
+      while (k >= 16 * sizeof(int8_t)) {
+        int8x8_t va0x0 = vld1_s8(a0); a0 += 8;
+        int8x8_t va0x1 = vld1_s8(a0); a0 += 8;
+
+        const int8x8_t vb0123c0x0 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+        const int8x8_t vb4567c0x0 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+        const int8x8_t vb89ABc0x0 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+        const int8x8_t vbCDEFc0x0 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+        const int8x8_t vb0123c1x0 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+        const int8x8_t vb4567c1x0 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+        const int8x8_t vb89ABc1x0 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+        const int8x8_t vbCDEFc1x0 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+        const int8x8_t vb0123c2x0 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+        const int8x8_t vb4567c2x0 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+        const int8x8_t vb89ABc2x0 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+        const int8x8_t vbCDEFc2x0 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+        const int8x8_t vb0123c3x0 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+        const int8x8_t vb4567c3x0 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+        const int8x8_t vb89ABc3x0 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+        const int8x8_t vbCDEFc3x0 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+
+        int16x8_t vprod0x0123c0 = vmull_s8(vb0123c0x0, va0x0);
+        const int8x8_t vb0123c0x1 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+        vprod0x0123c0 = vmlal_s8(vprod0x0123c0, vb0123c0x1, va0x1);
+        vacc0x0123 = vpadalq_s16(vacc0x0123, vprod0x0123c0);
+        int16x8_t vprod0x4567c0 = vmull_s8(vb4567c0x0, va0x0);
+        const int8x8_t vb4567c0x1 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+        vprod0x4567c0 = vmlal_s8(vprod0x4567c0, vb4567c0x1, va0x1);
+        vacc0x4567 = vpadalq_s16(vacc0x4567, vprod0x4567c0);
+        int16x8_t vprod0x89ABc0 = vmull_s8(vb89ABc0x0, va0x0);
+        const int8x8_t vb89ABc0x1 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+        vprod0x89ABc0 = vmlal_s8(vprod0x89ABc0, vb89ABc0x1, va0x1);
+        vacc0x89AB = vpadalq_s16(vacc0x89AB, vprod0x89ABc0);
+        int16x8_t vprod0xCDEFc0 = vmull_s8(vbCDEFc0x0, va0x0);
+        const int8x8_t vbCDEFc0x1 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+        vprod0xCDEFc0 = vmlal_s8(vprod0xCDEFc0, vbCDEFc0x1, va0x1);
+        vacc0xCDEF = vpadalq_s16(vacc0xCDEF, vprod0xCDEFc0);
+        va0x0 = vext_s8(va0x0, va0x0, 2);
+        va0x1 = vext_s8(va0x1, va0x1, 2);
+        int16x8_t vprod0x0123c1 = vmull_s8(vb0123c1x0, va0x0);
+        const int8x8_t vb0123c1x1 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+        vprod0x0123c1 = vmlal_s8(vprod0x0123c1, vb0123c1x1, va0x1);
+        vacc0x0123 = vpadalq_s16(vacc0x0123, vprod0x0123c1);
+        int16x8_t vprod0x4567c1 = vmull_s8(vb4567c1x0, va0x0);
+        const int8x8_t vb4567c1x1 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+        vprod0x4567c1 = vmlal_s8(vprod0x4567c1, vb4567c1x1, va0x1);
+        vacc0x4567 = vpadalq_s16(vacc0x4567, vprod0x4567c1);
+        int16x8_t vprod0x89ABc1 = vmull_s8(vb89ABc1x0, va0x0);
+        const int8x8_t vb89ABc1x1 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+        vprod0x89ABc1 = vmlal_s8(vprod0x89ABc1, vb89ABc1x1, va0x1);
+        vacc0x89AB = vpadalq_s16(vacc0x89AB, vprod0x89ABc1);
+        int16x8_t vprod0xCDEFc1 = vmull_s8(vbCDEFc1x0, va0x0);
+        const int8x8_t vbCDEFc1x1 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+        vprod0xCDEFc1 = vmlal_s8(vprod0xCDEFc1, vbCDEFc1x1, va0x1);
+        vacc0xCDEF = vpadalq_s16(vacc0xCDEF, vprod0xCDEFc1);
+        va0x0 = vext_s8(va0x0, va0x0, 2);
+        va0x1 = vext_s8(va0x1, va0x1, 2);
+        int16x8_t vprod0x0123c2 = vmull_s8(vb0123c2x0, va0x0);
+        const int8x8_t vb0123c2x1 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+        vprod0x0123c2 = vmlal_s8(vprod0x0123c2, vb0123c2x1, va0x1);
+        vacc0x0123 = vpadalq_s16(vacc0x0123, vprod0x0123c2);
+        int16x8_t vprod0x4567c2 = vmull_s8(vb4567c2x0, va0x0);
+        const int8x8_t vb4567c2x1 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+        vprod0x4567c2 = vmlal_s8(vprod0x4567c2, vb4567c2x1, va0x1);
+        vacc0x4567 = vpadalq_s16(vacc0x4567, vprod0x4567c2);
+        int16x8_t vprod0x89ABc2 = vmull_s8(vb89ABc2x0, va0x0);
+        const int8x8_t vb89ABc2x1 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+        vprod0x89ABc2 = vmlal_s8(vprod0x89ABc2, vb89ABc2x1, va0x1);
+        vacc0x89AB = vpadalq_s16(vacc0x89AB, vprod0x89ABc2);
+        int16x8_t vprod0xCDEFc2 = vmull_s8(vbCDEFc2x0, va0x0);
+        const int8x8_t vbCDEFc2x1 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+        vprod0xCDEFc2 = vmlal_s8(vprod0xCDEFc2, vbCDEFc2x1, va0x1);
+        vacc0xCDEF = vpadalq_s16(vacc0xCDEF, vprod0xCDEFc2);
+        va0x0 = vext_s8(va0x0, va0x0, 2);
+        va0x1 = vext_s8(va0x1, va0x1, 2);
+        int16x8_t vprod0x0123c3 = vmull_s8(vb0123c3x0, va0x0);
+        const int8x8_t vb0123c3x1 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+        vprod0x0123c3 = vmlal_s8(vprod0x0123c3, vb0123c3x1, va0x1);
+        vacc0x0123 = vpadalq_s16(vacc0x0123, vprod0x0123c3);
+        int16x8_t vprod0x4567c3 = vmull_s8(vb4567c3x0, va0x0);
+        const int8x8_t vb4567c3x1 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+        vprod0x4567c3 = vmlal_s8(vprod0x4567c3, vb4567c3x1, va0x1);
+        vacc0x4567 = vpadalq_s16(vacc0x4567, vprod0x4567c3);
+        int16x8_t vprod0x89ABc3 = vmull_s8(vb89ABc3x0, va0x0);
+        const int8x8_t vb89ABc3x1 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+        vprod0x89ABc3 = vmlal_s8(vprod0x89ABc3, vb89ABc3x1, va0x1);
+        vacc0x89AB = vpadalq_s16(vacc0x89AB, vprod0x89ABc3);
+        int16x8_t vprod0xCDEFc3 = vmull_s8(vbCDEFc3x0, va0x0);
+        const int8x8_t vbCDEFc3x1 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+        vprod0xCDEFc3 = vmlal_s8(vprod0xCDEFc3, vbCDEFc3x1, va0x1);
+        vacc0xCDEF = vpadalq_s16(vacc0xCDEF, vprod0xCDEFc3);
+
+        k -= 16 * sizeof(int8_t);
+      }
+
+      if (k >= 8 * sizeof(int8_t)) {
+        int8x8_t va0x0 = vld1_s8(a0); a0 += 8;
+
+        const int8x8_t vb0123c0x0 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+        const int8x8_t vb4567c0x0 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+        const int8x8_t vb89ABc0x0 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+        const int8x8_t vbCDEFc0x0 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+        const int8x8_t vb0123c1x0 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+        const int8x8_t vb4567c1x0 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+        const int8x8_t vb89ABc1x0 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+        const int8x8_t vbCDEFc1x0 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+        const int8x8_t vb0123c2x0 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+        const int8x8_t vb4567c2x0 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+        const int8x8_t vb89ABc2x0 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+        const int8x8_t vbCDEFc2x0 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+        const int8x8_t vb0123c3x0 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+        const int8x8_t vb4567c3x0 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+        const int8x8_t vb89ABc3x0 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+        const int8x8_t vbCDEFc3x0 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+
+        int16x8_t vprod0x0123c0 = vmull_s8(vb0123c0x0, va0x0);
+        vacc0x0123 = vpadalq_s16(vacc0x0123, vprod0x0123c0);
+        int16x8_t vprod0x4567c0 = vmull_s8(vb4567c0x0, va0x0);
+        vacc0x4567 = vpadalq_s16(vacc0x4567, vprod0x4567c0);
+        int16x8_t vprod0x89ABc0 = vmull_s8(vb89ABc0x0, va0x0);
+        vacc0x89AB = vpadalq_s16(vacc0x89AB, vprod0x89ABc0);
+        int16x8_t vprod0xCDEFc0 = vmull_s8(vbCDEFc0x0, va0x0);
+        vacc0xCDEF = vpadalq_s16(vacc0xCDEF, vprod0xCDEFc0);
+        va0x0 = vext_s8(va0x0, va0x0, 2);
+        int16x8_t vprod0x0123c1 = vmull_s8(vb0123c1x0, va0x0);
+        vacc0x0123 = vpadalq_s16(vacc0x0123, vprod0x0123c1);
+        int16x8_t vprod0x4567c1 = vmull_s8(vb4567c1x0, va0x0);
+        vacc0x4567 = vpadalq_s16(vacc0x4567, vprod0x4567c1);
+        int16x8_t vprod0x89ABc1 = vmull_s8(vb89ABc1x0, va0x0);
+        vacc0x89AB = vpadalq_s16(vacc0x89AB, vprod0x89ABc1);
+        int16x8_t vprod0xCDEFc1 = vmull_s8(vbCDEFc1x0, va0x0);
+        vacc0xCDEF = vpadalq_s16(vacc0xCDEF, vprod0xCDEFc1);
+        va0x0 = vext_s8(va0x0, va0x0, 2);
+        int16x8_t vprod0x0123c2 = vmull_s8(vb0123c2x0, va0x0);
+        vacc0x0123 = vpadalq_s16(vacc0x0123, vprod0x0123c2);
+        int16x8_t vprod0x4567c2 = vmull_s8(vb4567c2x0, va0x0);
+        vacc0x4567 = vpadalq_s16(vacc0x4567, vprod0x4567c2);
+        int16x8_t vprod0x89ABc2 = vmull_s8(vb89ABc2x0, va0x0);
+        vacc0x89AB = vpadalq_s16(vacc0x89AB, vprod0x89ABc2);
+        int16x8_t vprod0xCDEFc2 = vmull_s8(vbCDEFc2x0, va0x0);
+        vacc0xCDEF = vpadalq_s16(vacc0xCDEF, vprod0xCDEFc2);
+        va0x0 = vext_s8(va0x0, va0x0, 2);
+        int16x8_t vprod0x0123c3 = vmull_s8(vb0123c3x0, va0x0);
+        vacc0x0123 = vpadalq_s16(vacc0x0123, vprod0x0123c3);
+        int16x8_t vprod0x4567c3 = vmull_s8(vb4567c3x0, va0x0);
+        vacc0x4567 = vpadalq_s16(vacc0x4567, vprod0x4567c3);
+        int16x8_t vprod0x89ABc3 = vmull_s8(vb89ABc3x0, va0x0);
+        vacc0x89AB = vpadalq_s16(vacc0x89AB, vprod0x89ABc3);
+        int16x8_t vprod0xCDEFc3 = vmull_s8(vbCDEFc3x0, va0x0);
+        vacc0xCDEF = vpadalq_s16(vacc0xCDEF, vprod0xCDEFc3);
+
+        k -= 8 * sizeof(int8_t);
+      }
+
+      if XNN_UNLIKELY(k != 0) {
+        const int8x8_t va0 = vld1_s8(a0); a0 = (const int8_t*) ((uintptr_t) a0 + k);
+
+        const int8x8_t vb0123c0 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+        const int8x8_t vb4567c0 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+        const int8x8_t vb89ABc0 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+        const int8x8_t vbCDEFc0 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+
+        const int16x8_t vprod0x0123c0 = vmull_s8(vb0123c0, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va0), 0)));
+        vacc0x0123 = vpadalq_s16(vacc0x0123, vprod0x0123c0);
+        const int16x8_t vprod0x4567c0 = vmull_s8(vb4567c0, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va0), 0)));
+        vacc0x4567 = vpadalq_s16(vacc0x4567, vprod0x4567c0);
+        const int16x8_t vprod0x89ABc0 = vmull_s8(vb89ABc0, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va0), 0)));
+        vacc0x89AB = vpadalq_s16(vacc0x89AB, vprod0x89ABc0);
+        const int16x8_t vprod0xCDEFc0 = vmull_s8(vbCDEFc0, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va0), 0)));
+        vacc0xCDEF = vpadalq_s16(vacc0xCDEF, vprod0xCDEFc0);
+
+        if (k > 2 * sizeof(int8_t)) {
+          const int8x8_t vb0123c1 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+          const int8x8_t vb4567c1 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+          const int8x8_t vb89ABc1 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+          const int8x8_t vbCDEFc1 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+
+          const int16x8_t vprod0x0123c1 = vmull_s8(vb0123c1, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va0), 1)));
+          vacc0x0123 = vpadalq_s16(vacc0x0123, vprod0x0123c1);
+          const int16x8_t vprod0x4567c1 = vmull_s8(vb4567c1, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va0), 1)));
+          vacc0x4567 = vpadalq_s16(vacc0x4567, vprod0x4567c1);
+          const int16x8_t vprod0x89ABc1 = vmull_s8(vb89ABc1, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va0), 1)));
+          vacc0x89AB = vpadalq_s16(vacc0x89AB, vprod0x89ABc1);
+          const int16x8_t vprod0xCDEFc1 = vmull_s8(vbCDEFc1, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va0), 1)));
+          vacc0xCDEF = vpadalq_s16(vacc0xCDEF, vprod0xCDEFc1);
+
+          if (k > 4 * sizeof(int8_t)) {
+            const int8x8_t vb0123c2 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+            const int8x8_t vb4567c2 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+            const int8x8_t vb89ABc2 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+            const int8x8_t vbCDEFc2 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+
+            const int16x8_t vprod0x0123c2 = vmull_s8(vb0123c2, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va0), 2)));
+            vacc0x0123 = vpadalq_s16(vacc0x0123, vprod0x0123c2);
+            const int16x8_t vprod0x4567c2 = vmull_s8(vb4567c2, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va0), 2)));
+            vacc0x4567 = vpadalq_s16(vacc0x4567, vprod0x4567c2);
+            const int16x8_t vprod0x89ABc2 = vmull_s8(vb89ABc2, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va0), 2)));
+            vacc0x89AB = vpadalq_s16(vacc0x89AB, vprod0x89ABc2);
+            const int16x8_t vprod0xCDEFc2 = vmull_s8(vbCDEFc2, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va0), 2)));
+            vacc0xCDEF = vpadalq_s16(vacc0xCDEF, vprod0xCDEFc2);
+
+            if (k > 6 * sizeof(int8_t)) {
+              const int8x8_t vb0123c2 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+              const int8x8_t vb4567c2 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+              const int8x8_t vb89ABc2 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+              const int8x8_t vbCDEFc2 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+
+              const int16x8_t vprod0x0123c2 = vmull_s8(vb0123c2, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va0), 3)));
+              vacc0x0123 = vpadalq_s16(vacc0x0123, vprod0x0123c2);
+              const int16x8_t vprod0x4567c2 = vmull_s8(vb4567c2, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va0), 3)));
+              vacc0x4567 = vpadalq_s16(vacc0x4567, vprod0x4567c2);
+              const int16x8_t vprod0x89ABc2 = vmull_s8(vb89ABc2, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va0), 3)));
+              vacc0x89AB = vpadalq_s16(vacc0x89AB, vprod0x89ABc2);
+              const int16x8_t vprod0xCDEFc2 = vmull_s8(vbCDEFc2, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va0), 3)));
+              vacc0xCDEF = vpadalq_s16(vacc0xCDEF, vprod0xCDEFc2);
+            }
+          }
+        }
+      }
+      p -= 1 * sizeof(void*);
+    } while (p != 0);
+
+    const int32x4_t vright_pre_shift = vld1q_dup_s32(&params->rndnu_neon.right_pre_shift);
+    const int32x4_t vmultiplier = vld1q_dup_s32(&params->rndnu_neon.multiplier);
+    const int32x4_t vright_post_shift = vld1q_dup_s32(&params->rndnu_neon.right_post_shift);
+
+    vacc0x0123 = vshlq_s32(vacc0x0123, vright_pre_shift);
+    vacc0x4567 = vshlq_s32(vacc0x4567, vright_pre_shift);
+    vacc0x89AB = vshlq_s32(vacc0x89AB, vright_pre_shift);
+    vacc0xCDEF = vshlq_s32(vacc0xCDEF, vright_pre_shift);
+
+    vacc0x0123 = vqdmulhq_s32(vacc0x0123, vmultiplier);
+    vacc0x4567 = vqdmulhq_s32(vacc0x4567, vmultiplier);
+    vacc0x89AB = vqdmulhq_s32(vacc0x89AB, vmultiplier);
+    vacc0xCDEF = vqdmulhq_s32(vacc0xCDEF, vmultiplier);
+
+    vacc0x0123 = vrshlq_s32(vacc0x0123, vright_post_shift);
+    vacc0x4567 = vrshlq_s32(vacc0x4567, vright_post_shift);
+    vacc0x89AB = vrshlq_s32(vacc0x89AB, vright_post_shift);
+    vacc0xCDEF = vrshlq_s32(vacc0xCDEF, vright_post_shift);
+
+    const int16x8_t voutput_zero_point = vld1q_dup_s16(&params->rndnu_neon.output_zero_point);
+#if XNN_ARCH_ARM64
+    const int16x8_t vacc0x01234567 = vqaddq_s16(vqmovn_high_s32(vqmovn_s32(vacc0x0123), vacc0x4567), voutput_zero_point);
+    const int16x8_t vacc0x89ABCDEF = vqaddq_s16(vqmovn_high_s32(vqmovn_s32(vacc0x89AB), vacc0xCDEF), voutput_zero_point);
+
+    int8x16_t vout0x0123456789ABCDEF = vqmovn_high_s16(vqmovn_s16(vacc0x01234567), vacc0x89ABCDEF);
+#else
+    const int16x8_t vacc0x01234567 = vqaddq_s16(vcombine_s16(vqmovn_s32(vacc0x0123), vqmovn_s32(vacc0x4567)), voutput_zero_point);
+    const int16x8_t vacc0x89ABCDEF = vqaddq_s16(vcombine_s16(vqmovn_s32(vacc0x89AB), vqmovn_s32(vacc0xCDEF)), voutput_zero_point);
+
+    int8x16_t vout0x0123456789ABCDEF = vcombine_s8(vqmovn_s16(vacc0x01234567), vqmovn_s16(vacc0x89ABCDEF));
+#endif
+    const int8x16_t voutput_min = vld1q_dup_s8(&params->rndnu_neon.output_min);
+    const int8x16_t voutput_max = vld1q_dup_s8(&params->rndnu_neon.output_max);
+
+    vout0x0123456789ABCDEF = vmaxq_s8(vout0x0123456789ABCDEF, voutput_min);
+
+    vout0x0123456789ABCDEF = vminq_s8(vout0x0123456789ABCDEF, voutput_max);
+
+    if (nc >= 16) {
+      vst1q_s8(c0 + 0, vout0x0123456789ABCDEF);
+
+      c0 = (int8_t*) ((uintptr_t) c0 + cn_stride);
+
+      a = (const int8_t**restrict) ((uintptr_t) a - ks);
+
+      nc -= 16;
+    } else {
+      int8x8_t vout0x01234567 = vget_low_s8(vout0x0123456789ABCDEF);
+      if (nc & 8) {
+        vst1_s8(c0, vout0x01234567); c0 += 8;
+        vout0x01234567 = vget_high_s8(vout0x0123456789ABCDEF);
+      }
+      if (nc & 4) {
+        vst1_lane_u32(__builtin_assume_aligned(c0, 1), vreinterpret_u32_s8(vout0x01234567), 0); c0 += 4;
+        vout0x01234567 = vext_s8(vout0x01234567, vout0x01234567, 4);
+      }
+      if (nc & 2) {
+        vst1_lane_u16(__builtin_assume_aligned(c0, 1), vreinterpret_u16_s8(vout0x01234567), 0); c0 += 2;
+        vout0x01234567 = vext_s8(vout0x01234567, vout0x01234567, 2);
+      }
+      if (nc & 1) {
+        vst1_lane_s8(c0, vout0x01234567, 0);
+      }
+
+      nc = 0;
+    }
+  } while (nc != 0);
+}
diff --git a/src/qs8-igemm/gen/1x16c2s4-minmax-rndnu-neon-mull-padal.c b/src/qs8-igemm/gen/1x16c2s4-minmax-rndnu-neon-mull-padal.c
new file mode 100644
index 0000000..4f996c1
--- /dev/null
+++ b/src/qs8-igemm/gen/1x16c2s4-minmax-rndnu-neon-mull-padal.c
@@ -0,0 +1,256 @@
+// Auto-generated file. Do not edit!
+//   Template: src/qs8-igemm/c2-neon-mull-padal-shuffle.c.in
+//   Generator: tools/xngen
+//
+// Copyright 2021 Google LLC
+//
+// This source code is licensed under the BSD-style license found in the
+// LICENSE file in the root directory of this source tree.
+
+#include <assert.h>
+
+#include <arm_neon.h>
+
+#include <xnnpack/gemm.h>
+#include <xnnpack/math.h>
+
+
+void xnn_qs8_igemm_minmax_rndnu_ukernel_1x16c2s4__neon_mull_padal(
+    size_t mr,
+    size_t nc,
+    size_t kc,
+    size_t ks,
+    const int8_t** restrict a,
+    const void* restrict w,
+    int8_t* restrict c,
+    size_t cm_stride,
+    size_t cn_stride,
+    size_t a_offset,
+    const int8_t* zero,
+    const union xnn_qs8_conv_minmax_params params[restrict XNN_MIN_ELEMENTS(1)]) XNN_DISABLE_TSAN XNN_DISABLE_MSAN
+{
+  assert(mr != 0);
+  assert(mr <= 1);
+  assert(nc != 0);
+  assert(kc != 0);
+  assert(ks != 0);
+  assert(ks % (1 * sizeof(void*)) == 0);
+  assert(a_offset % sizeof(int8_t) == 0);
+  assert(a != NULL);
+  assert(w != NULL);
+  assert(c != NULL);
+
+  int8_t* c0 = c;
+
+  do {
+    int32x4_t vacc0x0123 = vld1q_s32(w); w = (const void*) ((uintptr_t) w + 4 * sizeof(int32_t));
+    int32x4_t vacc0x4567 = vld1q_s32(w); w = (const void*) ((uintptr_t) w + 4 * sizeof(int32_t));
+    int32x4_t vacc0x89AB = vld1q_s32(w); w = (const void*) ((uintptr_t) w + 4 * sizeof(int32_t));
+    int32x4_t vacc0xCDEF = vld1q_s32(w); w = (const void*) ((uintptr_t) w + 4 * sizeof(int32_t));
+
+    size_t p = ks;
+    do {
+      const int8_t* restrict a0 = a[0];
+      if XNN_UNPREDICTABLE(a0 != zero) {
+        a0 = (const int8_t*) ((uintptr_t) a0 + a_offset);
+      }
+      a += 1;
+
+      size_t k = kc;
+
+
+      while (k >= 8 * sizeof(int8_t)) {
+        int8x8_t va0x0 = vld1_s8(a0); a0 += 8;
+
+        const int8x8_t vb0123c0x0 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+        const int8x8_t vb4567c0x0 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+        const int8x8_t vb89ABc0x0 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+        const int8x8_t vbCDEFc0x0 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+        const int8x8_t vb0123c1x0 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+        const int8x8_t vb4567c1x0 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+        const int8x8_t vb89ABc1x0 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+        const int8x8_t vbCDEFc1x0 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+        const int8x8_t vb0123c2x0 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+        const int8x8_t vb4567c2x0 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+        const int8x8_t vb89ABc2x0 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+        const int8x8_t vbCDEFc2x0 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+        const int8x8_t vb0123c3x0 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+        const int8x8_t vb4567c3x0 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+        const int8x8_t vb89ABc3x0 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+        const int8x8_t vbCDEFc3x0 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+
+        int16x8_t vprod0x0123c0 = vmull_s8(vb0123c0x0, va0x0);
+        vacc0x0123 = vpadalq_s16(vacc0x0123, vprod0x0123c0);
+        int16x8_t vprod0x4567c0 = vmull_s8(vb4567c0x0, va0x0);
+        vacc0x4567 = vpadalq_s16(vacc0x4567, vprod0x4567c0);
+        int16x8_t vprod0x89ABc0 = vmull_s8(vb89ABc0x0, va0x0);
+        vacc0x89AB = vpadalq_s16(vacc0x89AB, vprod0x89ABc0);
+        int16x8_t vprod0xCDEFc0 = vmull_s8(vbCDEFc0x0, va0x0);
+        vacc0xCDEF = vpadalq_s16(vacc0xCDEF, vprod0xCDEFc0);
+        va0x0 = vext_s8(va0x0, va0x0, 2);
+        int16x8_t vprod0x0123c1 = vmull_s8(vb0123c1x0, va0x0);
+        vacc0x0123 = vpadalq_s16(vacc0x0123, vprod0x0123c1);
+        int16x8_t vprod0x4567c1 = vmull_s8(vb4567c1x0, va0x0);
+        vacc0x4567 = vpadalq_s16(vacc0x4567, vprod0x4567c1);
+        int16x8_t vprod0x89ABc1 = vmull_s8(vb89ABc1x0, va0x0);
+        vacc0x89AB = vpadalq_s16(vacc0x89AB, vprod0x89ABc1);
+        int16x8_t vprod0xCDEFc1 = vmull_s8(vbCDEFc1x0, va0x0);
+        vacc0xCDEF = vpadalq_s16(vacc0xCDEF, vprod0xCDEFc1);
+        va0x0 = vext_s8(va0x0, va0x0, 2);
+        int16x8_t vprod0x0123c2 = vmull_s8(vb0123c2x0, va0x0);
+        vacc0x0123 = vpadalq_s16(vacc0x0123, vprod0x0123c2);
+        int16x8_t vprod0x4567c2 = vmull_s8(vb4567c2x0, va0x0);
+        vacc0x4567 = vpadalq_s16(vacc0x4567, vprod0x4567c2);
+        int16x8_t vprod0x89ABc2 = vmull_s8(vb89ABc2x0, va0x0);
+        vacc0x89AB = vpadalq_s16(vacc0x89AB, vprod0x89ABc2);
+        int16x8_t vprod0xCDEFc2 = vmull_s8(vbCDEFc2x0, va0x0);
+        vacc0xCDEF = vpadalq_s16(vacc0xCDEF, vprod0xCDEFc2);
+        va0x0 = vext_s8(va0x0, va0x0, 2);
+        int16x8_t vprod0x0123c3 = vmull_s8(vb0123c3x0, va0x0);
+        vacc0x0123 = vpadalq_s16(vacc0x0123, vprod0x0123c3);
+        int16x8_t vprod0x4567c3 = vmull_s8(vb4567c3x0, va0x0);
+        vacc0x4567 = vpadalq_s16(vacc0x4567, vprod0x4567c3);
+        int16x8_t vprod0x89ABc3 = vmull_s8(vb89ABc3x0, va0x0);
+        vacc0x89AB = vpadalq_s16(vacc0x89AB, vprod0x89ABc3);
+        int16x8_t vprod0xCDEFc3 = vmull_s8(vbCDEFc3x0, va0x0);
+        vacc0xCDEF = vpadalq_s16(vacc0xCDEF, vprod0xCDEFc3);
+
+        k -= 8 * sizeof(int8_t);
+      }
+
+      if XNN_UNLIKELY(k != 0) {
+        const int8x8_t va0 = vld1_s8(a0); a0 = (const int8_t*) ((uintptr_t) a0 + k);
+
+        const int8x8_t vb0123c0 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+        const int8x8_t vb4567c0 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+        const int8x8_t vb89ABc0 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+        const int8x8_t vbCDEFc0 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+
+        const int16x8_t vprod0x0123c0 = vmull_s8(vb0123c0, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va0), 0)));
+        vacc0x0123 = vpadalq_s16(vacc0x0123, vprod0x0123c0);
+        const int16x8_t vprod0x4567c0 = vmull_s8(vb4567c0, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va0), 0)));
+        vacc0x4567 = vpadalq_s16(vacc0x4567, vprod0x4567c0);
+        const int16x8_t vprod0x89ABc0 = vmull_s8(vb89ABc0, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va0), 0)));
+        vacc0x89AB = vpadalq_s16(vacc0x89AB, vprod0x89ABc0);
+        const int16x8_t vprod0xCDEFc0 = vmull_s8(vbCDEFc0, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va0), 0)));
+        vacc0xCDEF = vpadalq_s16(vacc0xCDEF, vprod0xCDEFc0);
+
+        if (k > 2 * sizeof(int8_t)) {
+          const int8x8_t vb0123c1 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+          const int8x8_t vb4567c1 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+          const int8x8_t vb89ABc1 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+          const int8x8_t vbCDEFc1 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+
+          const int16x8_t vprod0x0123c1 = vmull_s8(vb0123c1, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va0), 1)));
+          vacc0x0123 = vpadalq_s16(vacc0x0123, vprod0x0123c1);
+          const int16x8_t vprod0x4567c1 = vmull_s8(vb4567c1, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va0), 1)));
+          vacc0x4567 = vpadalq_s16(vacc0x4567, vprod0x4567c1);
+          const int16x8_t vprod0x89ABc1 = vmull_s8(vb89ABc1, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va0), 1)));
+          vacc0x89AB = vpadalq_s16(vacc0x89AB, vprod0x89ABc1);
+          const int16x8_t vprod0xCDEFc1 = vmull_s8(vbCDEFc1, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va0), 1)));
+          vacc0xCDEF = vpadalq_s16(vacc0xCDEF, vprod0xCDEFc1);
+
+          if (k > 4 * sizeof(int8_t)) {
+            const int8x8_t vb0123c2 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+            const int8x8_t vb4567c2 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+            const int8x8_t vb89ABc2 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+            const int8x8_t vbCDEFc2 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+
+            const int16x8_t vprod0x0123c2 = vmull_s8(vb0123c2, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va0), 2)));
+            vacc0x0123 = vpadalq_s16(vacc0x0123, vprod0x0123c2);
+            const int16x8_t vprod0x4567c2 = vmull_s8(vb4567c2, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va0), 2)));
+            vacc0x4567 = vpadalq_s16(vacc0x4567, vprod0x4567c2);
+            const int16x8_t vprod0x89ABc2 = vmull_s8(vb89ABc2, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va0), 2)));
+            vacc0x89AB = vpadalq_s16(vacc0x89AB, vprod0x89ABc2);
+            const int16x8_t vprod0xCDEFc2 = vmull_s8(vbCDEFc2, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va0), 2)));
+            vacc0xCDEF = vpadalq_s16(vacc0xCDEF, vprod0xCDEFc2);
+
+            if (k > 6 * sizeof(int8_t)) {
+              const int8x8_t vb0123c2 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+              const int8x8_t vb4567c2 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+              const int8x8_t vb89ABc2 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+              const int8x8_t vbCDEFc2 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+
+              const int16x8_t vprod0x0123c2 = vmull_s8(vb0123c2, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va0), 3)));
+              vacc0x0123 = vpadalq_s16(vacc0x0123, vprod0x0123c2);
+              const int16x8_t vprod0x4567c2 = vmull_s8(vb4567c2, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va0), 3)));
+              vacc0x4567 = vpadalq_s16(vacc0x4567, vprod0x4567c2);
+              const int16x8_t vprod0x89ABc2 = vmull_s8(vb89ABc2, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va0), 3)));
+              vacc0x89AB = vpadalq_s16(vacc0x89AB, vprod0x89ABc2);
+              const int16x8_t vprod0xCDEFc2 = vmull_s8(vbCDEFc2, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va0), 3)));
+              vacc0xCDEF = vpadalq_s16(vacc0xCDEF, vprod0xCDEFc2);
+            }
+          }
+        }
+      }
+      p -= 1 * sizeof(void*);
+    } while (p != 0);
+
+    const int32x4_t vright_pre_shift = vld1q_dup_s32(&params->rndnu_neon.right_pre_shift);
+    const int32x4_t vmultiplier = vld1q_dup_s32(&params->rndnu_neon.multiplier);
+    const int32x4_t vright_post_shift = vld1q_dup_s32(&params->rndnu_neon.right_post_shift);
+
+    vacc0x0123 = vshlq_s32(vacc0x0123, vright_pre_shift);
+    vacc0x4567 = vshlq_s32(vacc0x4567, vright_pre_shift);
+    vacc0x89AB = vshlq_s32(vacc0x89AB, vright_pre_shift);
+    vacc0xCDEF = vshlq_s32(vacc0xCDEF, vright_pre_shift);
+
+    vacc0x0123 = vqdmulhq_s32(vacc0x0123, vmultiplier);
+    vacc0x4567 = vqdmulhq_s32(vacc0x4567, vmultiplier);
+    vacc0x89AB = vqdmulhq_s32(vacc0x89AB, vmultiplier);
+    vacc0xCDEF = vqdmulhq_s32(vacc0xCDEF, vmultiplier);
+
+    vacc0x0123 = vrshlq_s32(vacc0x0123, vright_post_shift);
+    vacc0x4567 = vrshlq_s32(vacc0x4567, vright_post_shift);
+    vacc0x89AB = vrshlq_s32(vacc0x89AB, vright_post_shift);
+    vacc0xCDEF = vrshlq_s32(vacc0xCDEF, vright_post_shift);
+
+    const int16x8_t voutput_zero_point = vld1q_dup_s16(&params->rndnu_neon.output_zero_point);
+#if XNN_ARCH_ARM64
+    const int16x8_t vacc0x01234567 = vqaddq_s16(vqmovn_high_s32(vqmovn_s32(vacc0x0123), vacc0x4567), voutput_zero_point);
+    const int16x8_t vacc0x89ABCDEF = vqaddq_s16(vqmovn_high_s32(vqmovn_s32(vacc0x89AB), vacc0xCDEF), voutput_zero_point);
+
+    int8x16_t vout0x0123456789ABCDEF = vqmovn_high_s16(vqmovn_s16(vacc0x01234567), vacc0x89ABCDEF);
+#else
+    const int16x8_t vacc0x01234567 = vqaddq_s16(vcombine_s16(vqmovn_s32(vacc0x0123), vqmovn_s32(vacc0x4567)), voutput_zero_point);
+    const int16x8_t vacc0x89ABCDEF = vqaddq_s16(vcombine_s16(vqmovn_s32(vacc0x89AB), vqmovn_s32(vacc0xCDEF)), voutput_zero_point);
+
+    int8x16_t vout0x0123456789ABCDEF = vcombine_s8(vqmovn_s16(vacc0x01234567), vqmovn_s16(vacc0x89ABCDEF));
+#endif
+    const int8x16_t voutput_min = vld1q_dup_s8(&params->rndnu_neon.output_min);
+    const int8x16_t voutput_max = vld1q_dup_s8(&params->rndnu_neon.output_max);
+
+    vout0x0123456789ABCDEF = vmaxq_s8(vout0x0123456789ABCDEF, voutput_min);
+
+    vout0x0123456789ABCDEF = vminq_s8(vout0x0123456789ABCDEF, voutput_max);
+
+    if (nc >= 16) {
+      vst1q_s8(c0 + 0, vout0x0123456789ABCDEF);
+
+      c0 = (int8_t*) ((uintptr_t) c0 + cn_stride);
+
+      a = (const int8_t**restrict) ((uintptr_t) a - ks);
+
+      nc -= 16;
+    } else {
+      int8x8_t vout0x01234567 = vget_low_s8(vout0x0123456789ABCDEF);
+      if (nc & 8) {
+        vst1_s8(c0, vout0x01234567); c0 += 8;
+        vout0x01234567 = vget_high_s8(vout0x0123456789ABCDEF);
+      }
+      if (nc & 4) {
+        vst1_lane_u32(__builtin_assume_aligned(c0, 1), vreinterpret_u32_s8(vout0x01234567), 0); c0 += 4;
+        vout0x01234567 = vext_s8(vout0x01234567, vout0x01234567, 4);
+      }
+      if (nc & 2) {
+        vst1_lane_u16(__builtin_assume_aligned(c0, 1), vreinterpret_u16_s8(vout0x01234567), 0); c0 += 2;
+        vout0x01234567 = vext_s8(vout0x01234567, vout0x01234567, 2);
+      }
+      if (nc & 1) {
+        vst1_lane_s8(c0, vout0x01234567, 0);
+      }
+
+      nc = 0;
+    }
+  } while (nc != 0);
+}
diff --git a/src/qs8-igemm/gen/1x8s4c2-minmax-rndnu-neon-mlal-padal.c b/src/qs8-igemm/gen/1x8c2s4-minmax-fp32-neon-mlal-padal.c
similarity index 86%
copy from src/qs8-igemm/gen/1x8s4c2-minmax-rndnu-neon-mlal-padal.c
copy to src/qs8-igemm/gen/1x8c2s4-minmax-fp32-neon-mlal-padal.c
index c0ff9fc..3cc68ac 100644
--- a/src/qs8-igemm/gen/1x8s4c2-minmax-rndnu-neon-mlal-padal.c
+++ b/src/qs8-igemm/gen/1x8c2s4-minmax-fp32-neon-mlal-padal.c
@@ -15,7 +15,7 @@
 #include <xnnpack/math.h>
 
 
-void xnn_qs8_igemm_minmax_rndnu_ukernel_1x8s4c2__neon_mlal_padal(
+void xnn_qs8_igemm_minmax_fp32_ukernel_1x8c2s4__neon_mlal_padal(
     size_t mr,
     size_t nc,
     size_t kc,
@@ -190,35 +190,38 @@
       p -= 1 * sizeof(void*);
     } while (p != 0);
 
-    const int32x4_t vright_pre_shift = vld1q_dup_s32(&params->rndnu_neon.right_pre_shift);
-    const int32x4_t vmultiplier = vld1q_dup_s32(&params->rndnu_neon.multiplier);
-    const int32x4_t vright_post_shift = vld1q_dup_s32(&params->rndnu_neon.right_post_shift);
+    float32x4_t vfpacc0x0123 = vcvtq_f32_s32(vacc0x0123);
+    float32x4_t vfpacc0x4567 = vcvtq_f32_s32(vacc0x4567);
 
-    vacc0x0123 = vshlq_s32(vacc0x0123, vright_pre_shift);
-    vacc0x4567 = vshlq_s32(vacc0x4567, vright_pre_shift);
+    const float32x4_t vscale = vld1q_dup_f32(&params->fp32_neon.scale);
+    vfpacc0x0123 = vmulq_f32(vfpacc0x0123, vscale);
+    vfpacc0x4567 = vmulq_f32(vfpacc0x4567, vscale);
 
-    vacc0x0123 = vqdmulhq_s32(vacc0x0123, vmultiplier);
-    vacc0x4567 = vqdmulhq_s32(vacc0x4567, vmultiplier);
+    const float32x4_t voutput_min_less_zero_point = vld1q_dup_f32(&params->fp32_neon.output_min_less_zero_point);
+    vfpacc0x0123 = vmaxq_f32(vfpacc0x0123, voutput_min_less_zero_point);
+    vfpacc0x4567 = vmaxq_f32(vfpacc0x4567, voutput_min_less_zero_point);
 
-    vacc0x0123 = vrshlq_s32(vacc0x0123, vright_post_shift);
-    vacc0x4567 = vrshlq_s32(vacc0x4567, vright_post_shift);
+    const float32x4_t voutput_max_less_zero_point = vld1q_dup_f32(&params->fp32_neon.output_max_less_zero_point);
+    vfpacc0x0123 = vminq_f32(vfpacc0x0123, voutput_max_less_zero_point);
+    vfpacc0x4567 = vminq_f32(vfpacc0x4567, voutput_max_less_zero_point);
 
-    const int16x8_t voutput_zero_point = vld1q_dup_s16(&params->rndnu_neon.output_zero_point);
+    const float32x4_t vmagic_bias = vld1q_dup_f32(&params->fp32_neon.magic_bias);
+    vacc0x0123 = vreinterpretq_s32_f32(vaddq_f32(vfpacc0x0123, vmagic_bias));
+    vacc0x4567 = vreinterpretq_s32_f32(vaddq_f32(vfpacc0x4567, vmagic_bias));
+
+    const int32x4_t vmagic_bias_less_zero_point = vld1q_dup_s32(&params->fp32_neon.magic_bias_less_zero_point);
+    vacc0x0123 = vsubq_s32(vacc0x0123, vmagic_bias_less_zero_point);
+    vacc0x4567 = vsubq_s32(vacc0x4567, vmagic_bias_less_zero_point);
+
 #if XNN_ARCH_ARM64
-    const int16x8_t vacc0x01234567 = vqaddq_s16(vqmovn_high_s32(vqmovn_s32(vacc0x0123), vacc0x4567), voutput_zero_point);
+    const int16x8_t vacc0x01234567 = vuzp1q_s16(vreinterpretq_s16_s32(vacc0x0123), vreinterpretq_s16_s32(vacc0x4567));
 
-    int8x8_t vout0x01234567 = vqmovn_s16(vacc0x01234567);
+    int8x8_t vout0x01234567 = vmovn_s16(vacc0x01234567);
 #else
-    const int16x8_t vacc0x01234567 = vqaddq_s16(vcombine_s16(vqmovn_s32(vacc0x0123), vqmovn_s32(vacc0x4567)), voutput_zero_point);
+    const int16x8_t vacc0x01234567 = vcombine_s16(vmovn_s32(vacc0x0123), vmovn_s32(vacc0x4567));
 
-    int8x8_t vout0x01234567 = vqmovn_s16(vacc0x01234567);
+    int8x8_t vout0x01234567 = vmovn_s16(vacc0x01234567);
 #endif
-    const int8x8_t voutput_min = vld1_dup_s8(&params->rndnu_neon.output_min);
-    const int8x8_t voutput_max = vld1_dup_s8(&params->rndnu_neon.output_max);
-
-    vout0x01234567 = vmax_s8(vout0x01234567, voutput_min);
-
-    vout0x01234567 = vmin_s8(vout0x01234567, voutput_max);
 
     if (nc >= 8) {
       vst1_s8(c0 + 0, vout0x01234567);
diff --git a/src/qs8-igemm/gen/1x8s4c2-minmax-rndnu-neon-mlal-padal.c b/src/qs8-igemm/gen/1x8c2s4-minmax-fp32-neonv8-mlal-padal.c
similarity index 92%
copy from src/qs8-igemm/gen/1x8s4c2-minmax-rndnu-neon-mlal-padal.c
copy to src/qs8-igemm/gen/1x8c2s4-minmax-fp32-neonv8-mlal-padal.c
index c0ff9fc..1e32b61 100644
--- a/src/qs8-igemm/gen/1x8s4c2-minmax-rndnu-neon-mlal-padal.c
+++ b/src/qs8-igemm/gen/1x8c2s4-minmax-fp32-neonv8-mlal-padal.c
@@ -12,10 +12,11 @@
 #include <arm_neon.h>
 
 #include <xnnpack/gemm.h>
+#include <xnnpack/intrinsics-polyfill.h>
 #include <xnnpack/math.h>
 
 
-void xnn_qs8_igemm_minmax_rndnu_ukernel_1x8s4c2__neon_mlal_padal(
+void xnn_qs8_igemm_minmax_fp32_ukernel_1x8c2s4__neonv8_mlal_padal(
     size_t mr,
     size_t nc,
     size_t kc,
@@ -190,20 +191,17 @@
       p -= 1 * sizeof(void*);
     } while (p != 0);
 
-    const int32x4_t vright_pre_shift = vld1q_dup_s32(&params->rndnu_neon.right_pre_shift);
-    const int32x4_t vmultiplier = vld1q_dup_s32(&params->rndnu_neon.multiplier);
-    const int32x4_t vright_post_shift = vld1q_dup_s32(&params->rndnu_neon.right_post_shift);
+    float32x4_t vfpacc0x0123 = vcvtq_f32_s32(vacc0x0123);
+    float32x4_t vfpacc0x4567 = vcvtq_f32_s32(vacc0x4567);
 
-    vacc0x0123 = vshlq_s32(vacc0x0123, vright_pre_shift);
-    vacc0x4567 = vshlq_s32(vacc0x4567, vright_pre_shift);
+    const float32x4_t vscale = vld1q_dup_f32(&params->fp32_neonv8.scale);
+    vfpacc0x0123 = vmulq_f32(vfpacc0x0123, vscale);
+    vfpacc0x4567 = vmulq_f32(vfpacc0x4567, vscale);
 
-    vacc0x0123 = vqdmulhq_s32(vacc0x0123, vmultiplier);
-    vacc0x4567 = vqdmulhq_s32(vacc0x4567, vmultiplier);
+    vacc0x0123 = vcvtnq_s32_f32(vfpacc0x0123);
+    vacc0x4567 = vcvtnq_s32_f32(vfpacc0x4567);
 
-    vacc0x0123 = vrshlq_s32(vacc0x0123, vright_post_shift);
-    vacc0x4567 = vrshlq_s32(vacc0x4567, vright_post_shift);
-
-    const int16x8_t voutput_zero_point = vld1q_dup_s16(&params->rndnu_neon.output_zero_point);
+    const int16x8_t voutput_zero_point = vld1q_dup_s16(&params->fp32_neonv8.output_zero_point);
 #if XNN_ARCH_ARM64
     const int16x8_t vacc0x01234567 = vqaddq_s16(vqmovn_high_s32(vqmovn_s32(vacc0x0123), vacc0x4567), voutput_zero_point);
 
@@ -213,8 +211,8 @@
 
     int8x8_t vout0x01234567 = vqmovn_s16(vacc0x01234567);
 #endif
-    const int8x8_t voutput_min = vld1_dup_s8(&params->rndnu_neon.output_min);
-    const int8x8_t voutput_max = vld1_dup_s8(&params->rndnu_neon.output_max);
+    const int8x8_t voutput_min = vld1_dup_s8(&params->fp32_neonv8.output_min);
+    const int8x8_t voutput_max = vld1_dup_s8(&params->fp32_neonv8.output_max);
 
     vout0x01234567 = vmax_s8(vout0x01234567, voutput_min);
 
diff --git a/src/qs8-igemm/gen/1x8s4c2-minmax-rndnu-neon-mlal-padal.c b/src/qs8-igemm/gen/1x8c2s4-minmax-rndnu-neon-mlal-padal.c
similarity index 99%
rename from src/qs8-igemm/gen/1x8s4c2-minmax-rndnu-neon-mlal-padal.c
rename to src/qs8-igemm/gen/1x8c2s4-minmax-rndnu-neon-mlal-padal.c
index c0ff9fc..4a9043b 100644
--- a/src/qs8-igemm/gen/1x8s4c2-minmax-rndnu-neon-mlal-padal.c
+++ b/src/qs8-igemm/gen/1x8c2s4-minmax-rndnu-neon-mlal-padal.c
@@ -15,7 +15,7 @@
 #include <xnnpack/math.h>
 
 
-void xnn_qs8_igemm_minmax_rndnu_ukernel_1x8s4c2__neon_mlal_padal(
+void xnn_qs8_igemm_minmax_rndnu_ukernel_1x8c2s4__neon_mlal_padal(
     size_t mr,
     size_t nc,
     size_t kc,
diff --git a/src/qs8-igemm/gen/1x8s4c2-minmax-rndnu-neon-mull-padal.c b/src/qs8-igemm/gen/1x8c2s4-minmax-rndnu-neon-mull-padal.c
similarity index 99%
rename from src/qs8-igemm/gen/1x8s4c2-minmax-rndnu-neon-mull-padal.c
rename to src/qs8-igemm/gen/1x8c2s4-minmax-rndnu-neon-mull-padal.c
index 25ebf6c..c088f67 100644
--- a/src/qs8-igemm/gen/1x8s4c2-minmax-rndnu-neon-mull-padal.c
+++ b/src/qs8-igemm/gen/1x8c2s4-minmax-rndnu-neon-mull-padal.c
@@ -15,7 +15,7 @@
 #include <xnnpack/math.h>
 
 
-void xnn_qs8_igemm_minmax_rndnu_ukernel_1x8s4c2__neon_mull_padal(
+void xnn_qs8_igemm_minmax_rndnu_ukernel_1x8c2s4__neon_mull_padal(
     size_t mr,
     size_t nc,
     size_t kc,
diff --git a/src/qs8-igemm/gen/2x16c2s4-minmax-rndnu-neon-mlal-padal.c b/src/qs8-igemm/gen/2x16c2s4-minmax-rndnu-neon-mlal-padal.c
new file mode 100644
index 0000000..5b4e758
--- /dev/null
+++ b/src/qs8-igemm/gen/2x16c2s4-minmax-rndnu-neon-mlal-padal.c
@@ -0,0 +1,513 @@
+// Auto-generated file. Do not edit!
+//   Template: src/qs8-igemm/c2-neon-mull-padal-shuffle.c.in
+//   Generator: tools/xngen
+//
+// Copyright 2021 Google LLC
+//
+// This source code is licensed under the BSD-style license found in the
+// LICENSE file in the root directory of this source tree.
+
+#include <assert.h>
+
+#include <arm_neon.h>
+
+#include <xnnpack/gemm.h>
+#include <xnnpack/math.h>
+
+
+void xnn_qs8_igemm_minmax_rndnu_ukernel_2x16c2s4__neon_mlal_padal(
+    size_t mr,
+    size_t nc,
+    size_t kc,
+    size_t ks,
+    const int8_t** restrict a,
+    const void* restrict w,
+    int8_t* restrict c,
+    size_t cm_stride,
+    size_t cn_stride,
+    size_t a_offset,
+    const int8_t* zero,
+    const union xnn_qs8_conv_minmax_params params[restrict XNN_MIN_ELEMENTS(1)]) XNN_DISABLE_TSAN XNN_DISABLE_MSAN
+{
+  assert(mr != 0);
+  assert(mr <= 2);
+  assert(nc != 0);
+  assert(kc != 0);
+  assert(ks != 0);
+  assert(ks % (2 * sizeof(void*)) == 0);
+  assert(a_offset % sizeof(int8_t) == 0);
+  assert(a != NULL);
+  assert(w != NULL);
+  assert(c != NULL);
+
+  int8_t* c0 = c;
+  int8_t* c1 = (int8_t*) ((uintptr_t) c0 + cm_stride);
+  if XNN_UNPREDICTABLE(mr != 2) {
+    c1 = c0;
+  }
+
+  do {
+    int32x4_t vacc0x0123 = vld1q_s32(w); w = (const void*) ((uintptr_t) w + 4 * sizeof(int32_t));
+    int32x4_t vacc0x4567 = vld1q_s32(w); w = (const void*) ((uintptr_t) w + 4 * sizeof(int32_t));
+    int32x4_t vacc0x89AB = vld1q_s32(w); w = (const void*) ((uintptr_t) w + 4 * sizeof(int32_t));
+    int32x4_t vacc0xCDEF = vld1q_s32(w); w = (const void*) ((uintptr_t) w + 4 * sizeof(int32_t));
+    int32x4_t vacc1x0123 = vacc0x0123;
+    int32x4_t vacc1x4567 = vacc0x4567;
+    int32x4_t vacc1x89AB = vacc0x89AB;
+    int32x4_t vacc1xCDEF = vacc0xCDEF;
+
+    size_t p = ks;
+    do {
+      const int8_t* restrict a0 = a[0];
+      if XNN_UNPREDICTABLE(a0 != zero) {
+        a0 = (const int8_t*) ((uintptr_t) a0 + a_offset);
+      }
+      const int8_t* restrict a1 = a[1];
+      if XNN_UNPREDICTABLE(a1 != zero) {
+        a1 = (const int8_t*) ((uintptr_t) a1 + a_offset);
+      }
+      a += 2;
+
+      size_t k = kc;
+
+      while (k >= 16 * sizeof(int8_t)) {
+        int8x8_t va0x0 = vld1_s8(a0); a0 += 8;
+        int8x8_t va0x1 = vld1_s8(a0); a0 += 8;
+        int8x8_t va1x0 = vld1_s8(a1); a1 += 8;
+        int8x8_t va1x1 = vld1_s8(a1); a1 += 8;
+
+        const int8x8_t vb0123c0x0 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+        const int8x8_t vb4567c0x0 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+        const int8x8_t vb89ABc0x0 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+        const int8x8_t vbCDEFc0x0 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+        const int8x8_t vb0123c1x0 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+        const int8x8_t vb4567c1x0 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+        const int8x8_t vb89ABc1x0 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+        const int8x8_t vbCDEFc1x0 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+        const int8x8_t vb0123c2x0 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+        const int8x8_t vb4567c2x0 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+        const int8x8_t vb89ABc2x0 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+        const int8x8_t vbCDEFc2x0 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+        const int8x8_t vb0123c3x0 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+        const int8x8_t vb4567c3x0 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+        const int8x8_t vb89ABc3x0 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+        const int8x8_t vbCDEFc3x0 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+
+        int16x8_t vprod0x0123c0 = vmull_s8(vb0123c0x0, va0x0);
+        int16x8_t vprod1x0123c0 = vmull_s8(vb0123c0x0, va1x0);
+        const int8x8_t vb0123c0x1 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+        vprod0x0123c0 = vmlal_s8(vprod0x0123c0, vb0123c0x1, va0x1);
+        vprod1x0123c0 = vmlal_s8(vprod1x0123c0, vb0123c0x1, va1x1);
+        vacc0x0123 = vpadalq_s16(vacc0x0123, vprod0x0123c0);
+        vacc1x0123 = vpadalq_s16(vacc1x0123, vprod1x0123c0);
+        int16x8_t vprod0x4567c0 = vmull_s8(vb4567c0x0, va0x0);
+        int16x8_t vprod1x4567c0 = vmull_s8(vb4567c0x0, va1x0);
+        const int8x8_t vb4567c0x1 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+        vprod0x4567c0 = vmlal_s8(vprod0x4567c0, vb4567c0x1, va0x1);
+        vprod1x4567c0 = vmlal_s8(vprod1x4567c0, vb4567c0x1, va1x1);
+        vacc0x4567 = vpadalq_s16(vacc0x4567, vprod0x4567c0);
+        vacc1x4567 = vpadalq_s16(vacc1x4567, vprod1x4567c0);
+        int16x8_t vprod0x89ABc0 = vmull_s8(vb89ABc0x0, va0x0);
+        int16x8_t vprod1x89ABc0 = vmull_s8(vb89ABc0x0, va1x0);
+        const int8x8_t vb89ABc0x1 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+        vprod0x89ABc0 = vmlal_s8(vprod0x89ABc0, vb89ABc0x1, va0x1);
+        vprod1x89ABc0 = vmlal_s8(vprod1x89ABc0, vb89ABc0x1, va1x1);
+        vacc0x89AB = vpadalq_s16(vacc0x89AB, vprod0x89ABc0);
+        vacc1x89AB = vpadalq_s16(vacc1x89AB, vprod1x89ABc0);
+        int16x8_t vprod0xCDEFc0 = vmull_s8(vbCDEFc0x0, va0x0);
+        int16x8_t vprod1xCDEFc0 = vmull_s8(vbCDEFc0x0, va1x0);
+        const int8x8_t vbCDEFc0x1 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+        vprod0xCDEFc0 = vmlal_s8(vprod0xCDEFc0, vbCDEFc0x1, va0x1);
+        vprod1xCDEFc0 = vmlal_s8(vprod1xCDEFc0, vbCDEFc0x1, va1x1);
+        vacc0xCDEF = vpadalq_s16(vacc0xCDEF, vprod0xCDEFc0);
+        vacc1xCDEF = vpadalq_s16(vacc1xCDEF, vprod1xCDEFc0);
+        va0x0 = vext_s8(va0x0, va0x0, 2);
+        va0x1 = vext_s8(va0x1, va0x1, 2);
+        va1x0 = vext_s8(va1x0, va1x0, 2);
+        va1x1 = vext_s8(va1x1, va1x1, 2);
+        int16x8_t vprod0x0123c1 = vmull_s8(vb0123c1x0, va0x0);
+        int16x8_t vprod1x0123c1 = vmull_s8(vb0123c1x0, va1x0);
+        const int8x8_t vb0123c1x1 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+        vprod0x0123c1 = vmlal_s8(vprod0x0123c1, vb0123c1x1, va0x1);
+        vprod1x0123c1 = vmlal_s8(vprod1x0123c1, vb0123c1x1, va1x1);
+        vacc0x0123 = vpadalq_s16(vacc0x0123, vprod0x0123c1);
+        vacc1x0123 = vpadalq_s16(vacc1x0123, vprod1x0123c1);
+        int16x8_t vprod0x4567c1 = vmull_s8(vb4567c1x0, va0x0);
+        int16x8_t vprod1x4567c1 = vmull_s8(vb4567c1x0, va1x0);
+        const int8x8_t vb4567c1x1 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+        vprod0x4567c1 = vmlal_s8(vprod0x4567c1, vb4567c1x1, va0x1);
+        vprod1x4567c1 = vmlal_s8(vprod1x4567c1, vb4567c1x1, va1x1);
+        vacc0x4567 = vpadalq_s16(vacc0x4567, vprod0x4567c1);
+        vacc1x4567 = vpadalq_s16(vacc1x4567, vprod1x4567c1);
+        int16x8_t vprod0x89ABc1 = vmull_s8(vb89ABc1x0, va0x0);
+        int16x8_t vprod1x89ABc1 = vmull_s8(vb89ABc1x0, va1x0);
+        const int8x8_t vb89ABc1x1 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+        vprod0x89ABc1 = vmlal_s8(vprod0x89ABc1, vb89ABc1x1, va0x1);
+        vprod1x89ABc1 = vmlal_s8(vprod1x89ABc1, vb89ABc1x1, va1x1);
+        vacc0x89AB = vpadalq_s16(vacc0x89AB, vprod0x89ABc1);
+        vacc1x89AB = vpadalq_s16(vacc1x89AB, vprod1x89ABc1);
+        int16x8_t vprod0xCDEFc1 = vmull_s8(vbCDEFc1x0, va0x0);
+        int16x8_t vprod1xCDEFc1 = vmull_s8(vbCDEFc1x0, va1x0);
+        const int8x8_t vbCDEFc1x1 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+        vprod0xCDEFc1 = vmlal_s8(vprod0xCDEFc1, vbCDEFc1x1, va0x1);
+        vprod1xCDEFc1 = vmlal_s8(vprod1xCDEFc1, vbCDEFc1x1, va1x1);
+        vacc0xCDEF = vpadalq_s16(vacc0xCDEF, vprod0xCDEFc1);
+        vacc1xCDEF = vpadalq_s16(vacc1xCDEF, vprod1xCDEFc1);
+        va0x0 = vext_s8(va0x0, va0x0, 2);
+        va0x1 = vext_s8(va0x1, va0x1, 2);
+        va1x0 = vext_s8(va1x0, va1x0, 2);
+        va1x1 = vext_s8(va1x1, va1x1, 2);
+        int16x8_t vprod0x0123c2 = vmull_s8(vb0123c2x0, va0x0);
+        int16x8_t vprod1x0123c2 = vmull_s8(vb0123c2x0, va1x0);
+        const int8x8_t vb0123c2x1 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+        vprod0x0123c2 = vmlal_s8(vprod0x0123c2, vb0123c2x1, va0x1);
+        vprod1x0123c2 = vmlal_s8(vprod1x0123c2, vb0123c2x1, va1x1);
+        vacc0x0123 = vpadalq_s16(vacc0x0123, vprod0x0123c2);
+        vacc1x0123 = vpadalq_s16(vacc1x0123, vprod1x0123c2);
+        int16x8_t vprod0x4567c2 = vmull_s8(vb4567c2x0, va0x0);
+        int16x8_t vprod1x4567c2 = vmull_s8(vb4567c2x0, va1x0);
+        const int8x8_t vb4567c2x1 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+        vprod0x4567c2 = vmlal_s8(vprod0x4567c2, vb4567c2x1, va0x1);
+        vprod1x4567c2 = vmlal_s8(vprod1x4567c2, vb4567c2x1, va1x1);
+        vacc0x4567 = vpadalq_s16(vacc0x4567, vprod0x4567c2);
+        vacc1x4567 = vpadalq_s16(vacc1x4567, vprod1x4567c2);
+        int16x8_t vprod0x89ABc2 = vmull_s8(vb89ABc2x0, va0x0);
+        int16x8_t vprod1x89ABc2 = vmull_s8(vb89ABc2x0, va1x0);
+        const int8x8_t vb89ABc2x1 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+        vprod0x89ABc2 = vmlal_s8(vprod0x89ABc2, vb89ABc2x1, va0x1);
+        vprod1x89ABc2 = vmlal_s8(vprod1x89ABc2, vb89ABc2x1, va1x1);
+        vacc0x89AB = vpadalq_s16(vacc0x89AB, vprod0x89ABc2);
+        vacc1x89AB = vpadalq_s16(vacc1x89AB, vprod1x89ABc2);
+        int16x8_t vprod0xCDEFc2 = vmull_s8(vbCDEFc2x0, va0x0);
+        int16x8_t vprod1xCDEFc2 = vmull_s8(vbCDEFc2x0, va1x0);
+        const int8x8_t vbCDEFc2x1 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+        vprod0xCDEFc2 = vmlal_s8(vprod0xCDEFc2, vbCDEFc2x1, va0x1);
+        vprod1xCDEFc2 = vmlal_s8(vprod1xCDEFc2, vbCDEFc2x1, va1x1);
+        vacc0xCDEF = vpadalq_s16(vacc0xCDEF, vprod0xCDEFc2);
+        vacc1xCDEF = vpadalq_s16(vacc1xCDEF, vprod1xCDEFc2);
+        va0x0 = vext_s8(va0x0, va0x0, 2);
+        va0x1 = vext_s8(va0x1, va0x1, 2);
+        va1x0 = vext_s8(va1x0, va1x0, 2);
+        va1x1 = vext_s8(va1x1, va1x1, 2);
+        int16x8_t vprod0x0123c3 = vmull_s8(vb0123c3x0, va0x0);
+        int16x8_t vprod1x0123c3 = vmull_s8(vb0123c3x0, va1x0);
+        const int8x8_t vb0123c3x1 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+        vprod0x0123c3 = vmlal_s8(vprod0x0123c3, vb0123c3x1, va0x1);
+        vprod1x0123c3 = vmlal_s8(vprod1x0123c3, vb0123c3x1, va1x1);
+        vacc0x0123 = vpadalq_s16(vacc0x0123, vprod0x0123c3);
+        vacc1x0123 = vpadalq_s16(vacc1x0123, vprod1x0123c3);
+        int16x8_t vprod0x4567c3 = vmull_s8(vb4567c3x0, va0x0);
+        int16x8_t vprod1x4567c3 = vmull_s8(vb4567c3x0, va1x0);
+        const int8x8_t vb4567c3x1 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+        vprod0x4567c3 = vmlal_s8(vprod0x4567c3, vb4567c3x1, va0x1);
+        vprod1x4567c3 = vmlal_s8(vprod1x4567c3, vb4567c3x1, va1x1);
+        vacc0x4567 = vpadalq_s16(vacc0x4567, vprod0x4567c3);
+        vacc1x4567 = vpadalq_s16(vacc1x4567, vprod1x4567c3);
+        int16x8_t vprod0x89ABc3 = vmull_s8(vb89ABc3x0, va0x0);
+        int16x8_t vprod1x89ABc3 = vmull_s8(vb89ABc3x0, va1x0);
+        const int8x8_t vb89ABc3x1 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+        vprod0x89ABc3 = vmlal_s8(vprod0x89ABc3, vb89ABc3x1, va0x1);
+        vprod1x89ABc3 = vmlal_s8(vprod1x89ABc3, vb89ABc3x1, va1x1);
+        vacc0x89AB = vpadalq_s16(vacc0x89AB, vprod0x89ABc3);
+        vacc1x89AB = vpadalq_s16(vacc1x89AB, vprod1x89ABc3);
+        int16x8_t vprod0xCDEFc3 = vmull_s8(vbCDEFc3x0, va0x0);
+        int16x8_t vprod1xCDEFc3 = vmull_s8(vbCDEFc3x0, va1x0);
+        const int8x8_t vbCDEFc3x1 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+        vprod0xCDEFc3 = vmlal_s8(vprod0xCDEFc3, vbCDEFc3x1, va0x1);
+        vprod1xCDEFc3 = vmlal_s8(vprod1xCDEFc3, vbCDEFc3x1, va1x1);
+        vacc0xCDEF = vpadalq_s16(vacc0xCDEF, vprod0xCDEFc3);
+        vacc1xCDEF = vpadalq_s16(vacc1xCDEF, vprod1xCDEFc3);
+
+        k -= 16 * sizeof(int8_t);
+      }
+
+      if (k >= 8 * sizeof(int8_t)) {
+        int8x8_t va0x0 = vld1_s8(a0); a0 += 8;
+        int8x8_t va1x0 = vld1_s8(a1); a1 += 8;
+
+        const int8x8_t vb0123c0x0 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+        const int8x8_t vb4567c0x0 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+        const int8x8_t vb89ABc0x0 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+        const int8x8_t vbCDEFc0x0 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+        const int8x8_t vb0123c1x0 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+        const int8x8_t vb4567c1x0 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+        const int8x8_t vb89ABc1x0 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+        const int8x8_t vbCDEFc1x0 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+        const int8x8_t vb0123c2x0 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+        const int8x8_t vb4567c2x0 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+        const int8x8_t vb89ABc2x0 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+        const int8x8_t vbCDEFc2x0 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+        const int8x8_t vb0123c3x0 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+        const int8x8_t vb4567c3x0 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+        const int8x8_t vb89ABc3x0 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+        const int8x8_t vbCDEFc3x0 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+
+        int16x8_t vprod0x0123c0 = vmull_s8(vb0123c0x0, va0x0);
+        int16x8_t vprod1x0123c0 = vmull_s8(vb0123c0x0, va1x0);
+        vacc0x0123 = vpadalq_s16(vacc0x0123, vprod0x0123c0);
+        vacc1x0123 = vpadalq_s16(vacc1x0123, vprod1x0123c0);
+        int16x8_t vprod0x4567c0 = vmull_s8(vb4567c0x0, va0x0);
+        int16x8_t vprod1x4567c0 = vmull_s8(vb4567c0x0, va1x0);
+        vacc0x4567 = vpadalq_s16(vacc0x4567, vprod0x4567c0);
+        vacc1x4567 = vpadalq_s16(vacc1x4567, vprod1x4567c0);
+        int16x8_t vprod0x89ABc0 = vmull_s8(vb89ABc0x0, va0x0);
+        int16x8_t vprod1x89ABc0 = vmull_s8(vb89ABc0x0, va1x0);
+        vacc0x89AB = vpadalq_s16(vacc0x89AB, vprod0x89ABc0);
+        vacc1x89AB = vpadalq_s16(vacc1x89AB, vprod1x89ABc0);
+        int16x8_t vprod0xCDEFc0 = vmull_s8(vbCDEFc0x0, va0x0);
+        int16x8_t vprod1xCDEFc0 = vmull_s8(vbCDEFc0x0, va1x0);
+        vacc0xCDEF = vpadalq_s16(vacc0xCDEF, vprod0xCDEFc0);
+        vacc1xCDEF = vpadalq_s16(vacc1xCDEF, vprod1xCDEFc0);
+        va0x0 = vext_s8(va0x0, va0x0, 2);
+        va1x0 = vext_s8(va1x0, va1x0, 2);
+        int16x8_t vprod0x0123c1 = vmull_s8(vb0123c1x0, va0x0);
+        int16x8_t vprod1x0123c1 = vmull_s8(vb0123c1x0, va1x0);
+        vacc0x0123 = vpadalq_s16(vacc0x0123, vprod0x0123c1);
+        vacc1x0123 = vpadalq_s16(vacc1x0123, vprod1x0123c1);
+        int16x8_t vprod0x4567c1 = vmull_s8(vb4567c1x0, va0x0);
+        int16x8_t vprod1x4567c1 = vmull_s8(vb4567c1x0, va1x0);
+        vacc0x4567 = vpadalq_s16(vacc0x4567, vprod0x4567c1);
+        vacc1x4567 = vpadalq_s16(vacc1x4567, vprod1x4567c1);
+        int16x8_t vprod0x89ABc1 = vmull_s8(vb89ABc1x0, va0x0);
+        int16x8_t vprod1x89ABc1 = vmull_s8(vb89ABc1x0, va1x0);
+        vacc0x89AB = vpadalq_s16(vacc0x89AB, vprod0x89ABc1);
+        vacc1x89AB = vpadalq_s16(vacc1x89AB, vprod1x89ABc1);
+        int16x8_t vprod0xCDEFc1 = vmull_s8(vbCDEFc1x0, va0x0);
+        int16x8_t vprod1xCDEFc1 = vmull_s8(vbCDEFc1x0, va1x0);
+        vacc0xCDEF = vpadalq_s16(vacc0xCDEF, vprod0xCDEFc1);
+        vacc1xCDEF = vpadalq_s16(vacc1xCDEF, vprod1xCDEFc1);
+        va0x0 = vext_s8(va0x0, va0x0, 2);
+        va1x0 = vext_s8(va1x0, va1x0, 2);
+        int16x8_t vprod0x0123c2 = vmull_s8(vb0123c2x0, va0x0);
+        int16x8_t vprod1x0123c2 = vmull_s8(vb0123c2x0, va1x0);
+        vacc0x0123 = vpadalq_s16(vacc0x0123, vprod0x0123c2);
+        vacc1x0123 = vpadalq_s16(vacc1x0123, vprod1x0123c2);
+        int16x8_t vprod0x4567c2 = vmull_s8(vb4567c2x0, va0x0);
+        int16x8_t vprod1x4567c2 = vmull_s8(vb4567c2x0, va1x0);
+        vacc0x4567 = vpadalq_s16(vacc0x4567, vprod0x4567c2);
+        vacc1x4567 = vpadalq_s16(vacc1x4567, vprod1x4567c2);
+        int16x8_t vprod0x89ABc2 = vmull_s8(vb89ABc2x0, va0x0);
+        int16x8_t vprod1x89ABc2 = vmull_s8(vb89ABc2x0, va1x0);
+        vacc0x89AB = vpadalq_s16(vacc0x89AB, vprod0x89ABc2);
+        vacc1x89AB = vpadalq_s16(vacc1x89AB, vprod1x89ABc2);
+        int16x8_t vprod0xCDEFc2 = vmull_s8(vbCDEFc2x0, va0x0);
+        int16x8_t vprod1xCDEFc2 = vmull_s8(vbCDEFc2x0, va1x0);
+        vacc0xCDEF = vpadalq_s16(vacc0xCDEF, vprod0xCDEFc2);
+        vacc1xCDEF = vpadalq_s16(vacc1xCDEF, vprod1xCDEFc2);
+        va0x0 = vext_s8(va0x0, va0x0, 2);
+        va1x0 = vext_s8(va1x0, va1x0, 2);
+        int16x8_t vprod0x0123c3 = vmull_s8(vb0123c3x0, va0x0);
+        int16x8_t vprod1x0123c3 = vmull_s8(vb0123c3x0, va1x0);
+        vacc0x0123 = vpadalq_s16(vacc0x0123, vprod0x0123c3);
+        vacc1x0123 = vpadalq_s16(vacc1x0123, vprod1x0123c3);
+        int16x8_t vprod0x4567c3 = vmull_s8(vb4567c3x0, va0x0);
+        int16x8_t vprod1x4567c3 = vmull_s8(vb4567c3x0, va1x0);
+        vacc0x4567 = vpadalq_s16(vacc0x4567, vprod0x4567c3);
+        vacc1x4567 = vpadalq_s16(vacc1x4567, vprod1x4567c3);
+        int16x8_t vprod0x89ABc3 = vmull_s8(vb89ABc3x0, va0x0);
+        int16x8_t vprod1x89ABc3 = vmull_s8(vb89ABc3x0, va1x0);
+        vacc0x89AB = vpadalq_s16(vacc0x89AB, vprod0x89ABc3);
+        vacc1x89AB = vpadalq_s16(vacc1x89AB, vprod1x89ABc3);
+        int16x8_t vprod0xCDEFc3 = vmull_s8(vbCDEFc3x0, va0x0);
+        int16x8_t vprod1xCDEFc3 = vmull_s8(vbCDEFc3x0, va1x0);
+        vacc0xCDEF = vpadalq_s16(vacc0xCDEF, vprod0xCDEFc3);
+        vacc1xCDEF = vpadalq_s16(vacc1xCDEF, vprod1xCDEFc3);
+
+        k -= 8 * sizeof(int8_t);
+      }
+
+      if XNN_UNLIKELY(k != 0) {
+        const int8x8_t va0 = vld1_s8(a0); a0 = (const int8_t*) ((uintptr_t) a0 + k);
+        const int8x8_t va1 = vld1_s8(a1); a1 = (const int8_t*) ((uintptr_t) a1 + k);
+
+        const int8x8_t vb0123c0 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+        const int8x8_t vb4567c0 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+        const int8x8_t vb89ABc0 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+        const int8x8_t vbCDEFc0 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+
+        const int16x8_t vprod0x0123c0 = vmull_s8(vb0123c0, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va0), 0)));
+        vacc0x0123 = vpadalq_s16(vacc0x0123, vprod0x0123c0);
+        const int16x8_t vprod0x4567c0 = vmull_s8(vb4567c0, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va0), 0)));
+        vacc0x4567 = vpadalq_s16(vacc0x4567, vprod0x4567c0);
+        const int16x8_t vprod0x89ABc0 = vmull_s8(vb89ABc0, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va0), 0)));
+        vacc0x89AB = vpadalq_s16(vacc0x89AB, vprod0x89ABc0);
+        const int16x8_t vprod0xCDEFc0 = vmull_s8(vbCDEFc0, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va0), 0)));
+        vacc0xCDEF = vpadalq_s16(vacc0xCDEF, vprod0xCDEFc0);
+        const int16x8_t vprod1x0123c0 = vmull_s8(vb0123c0, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va1), 0)));
+        vacc1x0123 = vpadalq_s16(vacc1x0123, vprod1x0123c0);
+        const int16x8_t vprod1x4567c0 = vmull_s8(vb4567c0, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va1), 0)));
+        vacc1x4567 = vpadalq_s16(vacc1x4567, vprod1x4567c0);
+        const int16x8_t vprod1x89ABc0 = vmull_s8(vb89ABc0, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va1), 0)));
+        vacc1x89AB = vpadalq_s16(vacc1x89AB, vprod1x89ABc0);
+        const int16x8_t vprod1xCDEFc0 = vmull_s8(vbCDEFc0, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va1), 0)));
+        vacc1xCDEF = vpadalq_s16(vacc1xCDEF, vprod1xCDEFc0);
+
+        if (k > 2 * sizeof(int8_t)) {
+          const int8x8_t vb0123c1 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+          const int8x8_t vb4567c1 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+          const int8x8_t vb89ABc1 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+          const int8x8_t vbCDEFc1 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+
+          const int16x8_t vprod0x0123c1 = vmull_s8(vb0123c1, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va0), 1)));
+          vacc0x0123 = vpadalq_s16(vacc0x0123, vprod0x0123c1);
+          const int16x8_t vprod0x4567c1 = vmull_s8(vb4567c1, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va0), 1)));
+          vacc0x4567 = vpadalq_s16(vacc0x4567, vprod0x4567c1);
+          const int16x8_t vprod0x89ABc1 = vmull_s8(vb89ABc1, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va0), 1)));
+          vacc0x89AB = vpadalq_s16(vacc0x89AB, vprod0x89ABc1);
+          const int16x8_t vprod0xCDEFc1 = vmull_s8(vbCDEFc1, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va0), 1)));
+          vacc0xCDEF = vpadalq_s16(vacc0xCDEF, vprod0xCDEFc1);
+          const int16x8_t vprod1x0123c1 = vmull_s8(vb0123c1, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va1), 1)));
+          vacc1x0123 = vpadalq_s16(vacc1x0123, vprod1x0123c1);
+          const int16x8_t vprod1x4567c1 = vmull_s8(vb4567c1, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va1), 1)));
+          vacc1x4567 = vpadalq_s16(vacc1x4567, vprod1x4567c1);
+          const int16x8_t vprod1x89ABc1 = vmull_s8(vb89ABc1, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va1), 1)));
+          vacc1x89AB = vpadalq_s16(vacc1x89AB, vprod1x89ABc1);
+          const int16x8_t vprod1xCDEFc1 = vmull_s8(vbCDEFc1, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va1), 1)));
+          vacc1xCDEF = vpadalq_s16(vacc1xCDEF, vprod1xCDEFc1);
+
+          if (k > 4 * sizeof(int8_t)) {
+            const int8x8_t vb0123c2 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+            const int8x8_t vb4567c2 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+            const int8x8_t vb89ABc2 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+            const int8x8_t vbCDEFc2 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+
+            const int16x8_t vprod0x0123c2 = vmull_s8(vb0123c2, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va0), 2)));
+            vacc0x0123 = vpadalq_s16(vacc0x0123, vprod0x0123c2);
+            const int16x8_t vprod0x4567c2 = vmull_s8(vb4567c2, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va0), 2)));
+            vacc0x4567 = vpadalq_s16(vacc0x4567, vprod0x4567c2);
+            const int16x8_t vprod0x89ABc2 = vmull_s8(vb89ABc2, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va0), 2)));
+            vacc0x89AB = vpadalq_s16(vacc0x89AB, vprod0x89ABc2);
+            const int16x8_t vprod0xCDEFc2 = vmull_s8(vbCDEFc2, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va0), 2)));
+            vacc0xCDEF = vpadalq_s16(vacc0xCDEF, vprod0xCDEFc2);
+            const int16x8_t vprod1x0123c2 = vmull_s8(vb0123c2, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va1), 2)));
+            vacc1x0123 = vpadalq_s16(vacc1x0123, vprod1x0123c2);
+            const int16x8_t vprod1x4567c2 = vmull_s8(vb4567c2, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va1), 2)));
+            vacc1x4567 = vpadalq_s16(vacc1x4567, vprod1x4567c2);
+            const int16x8_t vprod1x89ABc2 = vmull_s8(vb89ABc2, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va1), 2)));
+            vacc1x89AB = vpadalq_s16(vacc1x89AB, vprod1x89ABc2);
+            const int16x8_t vprod1xCDEFc2 = vmull_s8(vbCDEFc2, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va1), 2)));
+            vacc1xCDEF = vpadalq_s16(vacc1xCDEF, vprod1xCDEFc2);
+
+            if (k > 6 * sizeof(int8_t)) {
+              const int8x8_t vb0123c2 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+              const int8x8_t vb4567c2 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+              const int8x8_t vb89ABc2 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+              const int8x8_t vbCDEFc2 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+
+              const int16x8_t vprod0x0123c2 = vmull_s8(vb0123c2, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va0), 3)));
+              vacc0x0123 = vpadalq_s16(vacc0x0123, vprod0x0123c2);
+              const int16x8_t vprod0x4567c2 = vmull_s8(vb4567c2, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va0), 3)));
+              vacc0x4567 = vpadalq_s16(vacc0x4567, vprod0x4567c2);
+              const int16x8_t vprod0x89ABc2 = vmull_s8(vb89ABc2, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va0), 3)));
+              vacc0x89AB = vpadalq_s16(vacc0x89AB, vprod0x89ABc2);
+              const int16x8_t vprod0xCDEFc2 = vmull_s8(vbCDEFc2, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va0), 3)));
+              vacc0xCDEF = vpadalq_s16(vacc0xCDEF, vprod0xCDEFc2);
+              const int16x8_t vprod1x0123c2 = vmull_s8(vb0123c2, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va1), 3)));
+              vacc1x0123 = vpadalq_s16(vacc1x0123, vprod1x0123c2);
+              const int16x8_t vprod1x4567c2 = vmull_s8(vb4567c2, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va1), 3)));
+              vacc1x4567 = vpadalq_s16(vacc1x4567, vprod1x4567c2);
+              const int16x8_t vprod1x89ABc2 = vmull_s8(vb89ABc2, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va1), 3)));
+              vacc1x89AB = vpadalq_s16(vacc1x89AB, vprod1x89ABc2);
+              const int16x8_t vprod1xCDEFc2 = vmull_s8(vbCDEFc2, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va1), 3)));
+              vacc1xCDEF = vpadalq_s16(vacc1xCDEF, vprod1xCDEFc2);
+            }
+          }
+        }
+      }
+      p -= 2 * sizeof(void*);
+    } while (p != 0);
+
+    const int32x4_t vright_pre_shift = vld1q_dup_s32(&params->rndnu_neon.right_pre_shift);
+    const int32x4_t vmultiplier = vld1q_dup_s32(&params->rndnu_neon.multiplier);
+    const int32x4_t vright_post_shift = vld1q_dup_s32(&params->rndnu_neon.right_post_shift);
+
+    vacc0x0123 = vshlq_s32(vacc0x0123, vright_pre_shift);
+    vacc0x4567 = vshlq_s32(vacc0x4567, vright_pre_shift);
+    vacc0x89AB = vshlq_s32(vacc0x89AB, vright_pre_shift);
+    vacc0xCDEF = vshlq_s32(vacc0xCDEF, vright_pre_shift);
+    vacc1x0123 = vshlq_s32(vacc1x0123, vright_pre_shift);
+    vacc1x4567 = vshlq_s32(vacc1x4567, vright_pre_shift);
+    vacc1x89AB = vshlq_s32(vacc1x89AB, vright_pre_shift);
+    vacc1xCDEF = vshlq_s32(vacc1xCDEF, vright_pre_shift);
+
+    vacc0x0123 = vqdmulhq_s32(vacc0x0123, vmultiplier);
+    vacc0x4567 = vqdmulhq_s32(vacc0x4567, vmultiplier);
+    vacc0x89AB = vqdmulhq_s32(vacc0x89AB, vmultiplier);
+    vacc0xCDEF = vqdmulhq_s32(vacc0xCDEF, vmultiplier);
+    vacc1x0123 = vqdmulhq_s32(vacc1x0123, vmultiplier);
+    vacc1x4567 = vqdmulhq_s32(vacc1x4567, vmultiplier);
+    vacc1x89AB = vqdmulhq_s32(vacc1x89AB, vmultiplier);
+    vacc1xCDEF = vqdmulhq_s32(vacc1xCDEF, vmultiplier);
+
+    vacc0x0123 = vrshlq_s32(vacc0x0123, vright_post_shift);
+    vacc0x4567 = vrshlq_s32(vacc0x4567, vright_post_shift);
+    vacc0x89AB = vrshlq_s32(vacc0x89AB, vright_post_shift);
+    vacc0xCDEF = vrshlq_s32(vacc0xCDEF, vright_post_shift);
+    vacc1x0123 = vrshlq_s32(vacc1x0123, vright_post_shift);
+    vacc1x4567 = vrshlq_s32(vacc1x4567, vright_post_shift);
+    vacc1x89AB = vrshlq_s32(vacc1x89AB, vright_post_shift);
+    vacc1xCDEF = vrshlq_s32(vacc1xCDEF, vright_post_shift);
+
+    const int16x8_t voutput_zero_point = vld1q_dup_s16(&params->rndnu_neon.output_zero_point);
+#if XNN_ARCH_ARM64
+    const int16x8_t vacc0x01234567 = vqaddq_s16(vqmovn_high_s32(vqmovn_s32(vacc0x0123), vacc0x4567), voutput_zero_point);
+    const int16x8_t vacc0x89ABCDEF = vqaddq_s16(vqmovn_high_s32(vqmovn_s32(vacc0x89AB), vacc0xCDEF), voutput_zero_point);
+    const int16x8_t vacc1x01234567 = vqaddq_s16(vqmovn_high_s32(vqmovn_s32(vacc1x0123), vacc1x4567), voutput_zero_point);
+    const int16x8_t vacc1x89ABCDEF = vqaddq_s16(vqmovn_high_s32(vqmovn_s32(vacc1x89AB), vacc1xCDEF), voutput_zero_point);
+
+    int8x16_t vout0x0123456789ABCDEF = vqmovn_high_s16(vqmovn_s16(vacc0x01234567), vacc0x89ABCDEF);
+    int8x16_t vout1x0123456789ABCDEF = vqmovn_high_s16(vqmovn_s16(vacc1x01234567), vacc1x89ABCDEF);
+#else
+    const int16x8_t vacc0x01234567 = vqaddq_s16(vcombine_s16(vqmovn_s32(vacc0x0123), vqmovn_s32(vacc0x4567)), voutput_zero_point);
+    const int16x8_t vacc0x89ABCDEF = vqaddq_s16(vcombine_s16(vqmovn_s32(vacc0x89AB), vqmovn_s32(vacc0xCDEF)), voutput_zero_point);
+    const int16x8_t vacc1x01234567 = vqaddq_s16(vcombine_s16(vqmovn_s32(vacc1x0123), vqmovn_s32(vacc1x4567)), voutput_zero_point);
+    const int16x8_t vacc1x89ABCDEF = vqaddq_s16(vcombine_s16(vqmovn_s32(vacc1x89AB), vqmovn_s32(vacc1xCDEF)), voutput_zero_point);
+
+    int8x16_t vout0x0123456789ABCDEF = vcombine_s8(vqmovn_s16(vacc0x01234567), vqmovn_s16(vacc0x89ABCDEF));
+    int8x16_t vout1x0123456789ABCDEF = vcombine_s8(vqmovn_s16(vacc1x01234567), vqmovn_s16(vacc1x89ABCDEF));
+#endif
+    const int8x16_t voutput_min = vld1q_dup_s8(&params->rndnu_neon.output_min);
+    const int8x16_t voutput_max = vld1q_dup_s8(&params->rndnu_neon.output_max);
+
+    vout1x0123456789ABCDEF = vmaxq_s8(vout1x0123456789ABCDEF, voutput_min);
+    vout0x0123456789ABCDEF = vmaxq_s8(vout0x0123456789ABCDEF, voutput_min);
+
+    vout1x0123456789ABCDEF = vminq_s8(vout1x0123456789ABCDEF, voutput_max);
+    vout0x0123456789ABCDEF = vminq_s8(vout0x0123456789ABCDEF, voutput_max);
+
+    if (nc >= 16) {
+      vst1q_s8(c1 + 0, vout1x0123456789ABCDEF);
+      vst1q_s8(c0 + 0, vout0x0123456789ABCDEF);
+
+      c1 = (int8_t*) ((uintptr_t) c1 + cn_stride);
+      c0 = (int8_t*) ((uintptr_t) c0 + cn_stride);
+
+      a = (const int8_t**restrict) ((uintptr_t) a - ks);
+
+      nc -= 16;
+    } else {
+      int8x16_t vout0x01234567_1x01234567 = vcombine_s8(vget_low_s8(vout0x0123456789ABCDEF), vget_low_s8(vout1x0123456789ABCDEF));
+      if (nc & 8) {
+        vst1_s8(c1, vget_high_s8(vout0x01234567_1x01234567)); c1 += 8;
+        vst1_s8(c0, vget_low_s8(vout0x01234567_1x01234567)); c0 += 8;
+        vout0x01234567_1x01234567 = vcombine_s8(vget_high_s8(vout0x0123456789ABCDEF), vget_high_s8(vout1x0123456789ABCDEF));
+      }
+      if (nc & 4) {
+        vst1q_lane_u32(__builtin_assume_aligned(c1, 1), vreinterpretq_u32_s8(vout0x01234567_1x01234567), 2); c1 += 4;
+        vst1q_lane_u32(__builtin_assume_aligned(c0, 1), vreinterpretq_u32_s8(vout0x01234567_1x01234567), 0); c0 += 4;
+        vout0x01234567_1x01234567 = vextq_s8(vout0x01234567_1x01234567, vout0x01234567_1x01234567, 4);
+      }
+      if (nc & 2) {
+        vst1q_lane_u16(__builtin_assume_aligned(c1, 1), vreinterpretq_u16_s8(vout0x01234567_1x01234567), 4); c1 += 2;
+        vst1q_lane_u16(__builtin_assume_aligned(c0, 1), vreinterpretq_u16_s8(vout0x01234567_1x01234567), 0); c0 += 2;
+        vout0x01234567_1x01234567 = vextq_s8(vout0x01234567_1x01234567, vout0x01234567_1x01234567, 2);
+      }
+      if (nc & 1) {
+        vst1q_lane_s8(c1, vout0x01234567_1x01234567, 8);
+        vst1q_lane_s8(c0, vout0x01234567_1x01234567, 0);
+      }
+
+      nc = 0;
+    }
+  } while (nc != 0);
+}
diff --git a/src/qs8-igemm/gen/2x16c2s4-minmax-rndnu-neon-mull-padal.c b/src/qs8-igemm/gen/2x16c2s4-minmax-rndnu-neon-mull-padal.c
new file mode 100644
index 0000000..a5ea929
--- /dev/null
+++ b/src/qs8-igemm/gen/2x16c2s4-minmax-rndnu-neon-mull-padal.c
@@ -0,0 +1,363 @@
+// Auto-generated file. Do not edit!
+//   Template: src/qs8-igemm/c2-neon-mull-padal-shuffle.c.in
+//   Generator: tools/xngen
+//
+// Copyright 2021 Google LLC
+//
+// This source code is licensed under the BSD-style license found in the
+// LICENSE file in the root directory of this source tree.
+
+#include <assert.h>
+
+#include <arm_neon.h>
+
+#include <xnnpack/gemm.h>
+#include <xnnpack/math.h>
+
+
+void xnn_qs8_igemm_minmax_rndnu_ukernel_2x16c2s4__neon_mull_padal(
+    size_t mr,
+    size_t nc,
+    size_t kc,
+    size_t ks,
+    const int8_t** restrict a,
+    const void* restrict w,
+    int8_t* restrict c,
+    size_t cm_stride,
+    size_t cn_stride,
+    size_t a_offset,
+    const int8_t* zero,
+    const union xnn_qs8_conv_minmax_params params[restrict XNN_MIN_ELEMENTS(1)]) XNN_DISABLE_TSAN XNN_DISABLE_MSAN
+{
+  assert(mr != 0);
+  assert(mr <= 2);
+  assert(nc != 0);
+  assert(kc != 0);
+  assert(ks != 0);
+  assert(ks % (2 * sizeof(void*)) == 0);
+  assert(a_offset % sizeof(int8_t) == 0);
+  assert(a != NULL);
+  assert(w != NULL);
+  assert(c != NULL);
+
+  int8_t* c0 = c;
+  int8_t* c1 = (int8_t*) ((uintptr_t) c0 + cm_stride);
+  if XNN_UNPREDICTABLE(mr != 2) {
+    c1 = c0;
+  }
+
+  do {
+    int32x4_t vacc0x0123 = vld1q_s32(w); w = (const void*) ((uintptr_t) w + 4 * sizeof(int32_t));
+    int32x4_t vacc0x4567 = vld1q_s32(w); w = (const void*) ((uintptr_t) w + 4 * sizeof(int32_t));
+    int32x4_t vacc0x89AB = vld1q_s32(w); w = (const void*) ((uintptr_t) w + 4 * sizeof(int32_t));
+    int32x4_t vacc0xCDEF = vld1q_s32(w); w = (const void*) ((uintptr_t) w + 4 * sizeof(int32_t));
+    int32x4_t vacc1x0123 = vacc0x0123;
+    int32x4_t vacc1x4567 = vacc0x4567;
+    int32x4_t vacc1x89AB = vacc0x89AB;
+    int32x4_t vacc1xCDEF = vacc0xCDEF;
+
+    size_t p = ks;
+    do {
+      const int8_t* restrict a0 = a[0];
+      if XNN_UNPREDICTABLE(a0 != zero) {
+        a0 = (const int8_t*) ((uintptr_t) a0 + a_offset);
+      }
+      const int8_t* restrict a1 = a[1];
+      if XNN_UNPREDICTABLE(a1 != zero) {
+        a1 = (const int8_t*) ((uintptr_t) a1 + a_offset);
+      }
+      a += 2;
+
+      size_t k = kc;
+
+
+      while (k >= 8 * sizeof(int8_t)) {
+        int8x8_t va0x0 = vld1_s8(a0); a0 += 8;
+        int8x8_t va1x0 = vld1_s8(a1); a1 += 8;
+
+        const int8x8_t vb0123c0x0 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+        const int8x8_t vb4567c0x0 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+        const int8x8_t vb89ABc0x0 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+        const int8x8_t vbCDEFc0x0 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+        const int8x8_t vb0123c1x0 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+        const int8x8_t vb4567c1x0 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+        const int8x8_t vb89ABc1x0 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+        const int8x8_t vbCDEFc1x0 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+        const int8x8_t vb0123c2x0 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+        const int8x8_t vb4567c2x0 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+        const int8x8_t vb89ABc2x0 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+        const int8x8_t vbCDEFc2x0 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+        const int8x8_t vb0123c3x0 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+        const int8x8_t vb4567c3x0 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+        const int8x8_t vb89ABc3x0 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+        const int8x8_t vbCDEFc3x0 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+
+        int16x8_t vprod0x0123c0 = vmull_s8(vb0123c0x0, va0x0);
+        int16x8_t vprod1x0123c0 = vmull_s8(vb0123c0x0, va1x0);
+        vacc0x0123 = vpadalq_s16(vacc0x0123, vprod0x0123c0);
+        vacc1x0123 = vpadalq_s16(vacc1x0123, vprod1x0123c0);
+        int16x8_t vprod0x4567c0 = vmull_s8(vb4567c0x0, va0x0);
+        int16x8_t vprod1x4567c0 = vmull_s8(vb4567c0x0, va1x0);
+        vacc0x4567 = vpadalq_s16(vacc0x4567, vprod0x4567c0);
+        vacc1x4567 = vpadalq_s16(vacc1x4567, vprod1x4567c0);
+        int16x8_t vprod0x89ABc0 = vmull_s8(vb89ABc0x0, va0x0);
+        int16x8_t vprod1x89ABc0 = vmull_s8(vb89ABc0x0, va1x0);
+        vacc0x89AB = vpadalq_s16(vacc0x89AB, vprod0x89ABc0);
+        vacc1x89AB = vpadalq_s16(vacc1x89AB, vprod1x89ABc0);
+        int16x8_t vprod0xCDEFc0 = vmull_s8(vbCDEFc0x0, va0x0);
+        int16x8_t vprod1xCDEFc0 = vmull_s8(vbCDEFc0x0, va1x0);
+        vacc0xCDEF = vpadalq_s16(vacc0xCDEF, vprod0xCDEFc0);
+        vacc1xCDEF = vpadalq_s16(vacc1xCDEF, vprod1xCDEFc0);
+        va0x0 = vext_s8(va0x0, va0x0, 2);
+        va1x0 = vext_s8(va1x0, va1x0, 2);
+        int16x8_t vprod0x0123c1 = vmull_s8(vb0123c1x0, va0x0);
+        int16x8_t vprod1x0123c1 = vmull_s8(vb0123c1x0, va1x0);
+        vacc0x0123 = vpadalq_s16(vacc0x0123, vprod0x0123c1);
+        vacc1x0123 = vpadalq_s16(vacc1x0123, vprod1x0123c1);
+        int16x8_t vprod0x4567c1 = vmull_s8(vb4567c1x0, va0x0);
+        int16x8_t vprod1x4567c1 = vmull_s8(vb4567c1x0, va1x0);
+        vacc0x4567 = vpadalq_s16(vacc0x4567, vprod0x4567c1);
+        vacc1x4567 = vpadalq_s16(vacc1x4567, vprod1x4567c1);
+        int16x8_t vprod0x89ABc1 = vmull_s8(vb89ABc1x0, va0x0);
+        int16x8_t vprod1x89ABc1 = vmull_s8(vb89ABc1x0, va1x0);
+        vacc0x89AB = vpadalq_s16(vacc0x89AB, vprod0x89ABc1);
+        vacc1x89AB = vpadalq_s16(vacc1x89AB, vprod1x89ABc1);
+        int16x8_t vprod0xCDEFc1 = vmull_s8(vbCDEFc1x0, va0x0);
+        int16x8_t vprod1xCDEFc1 = vmull_s8(vbCDEFc1x0, va1x0);
+        vacc0xCDEF = vpadalq_s16(vacc0xCDEF, vprod0xCDEFc1);
+        vacc1xCDEF = vpadalq_s16(vacc1xCDEF, vprod1xCDEFc1);
+        va0x0 = vext_s8(va0x0, va0x0, 2);
+        va1x0 = vext_s8(va1x0, va1x0, 2);
+        int16x8_t vprod0x0123c2 = vmull_s8(vb0123c2x0, va0x0);
+        int16x8_t vprod1x0123c2 = vmull_s8(vb0123c2x0, va1x0);
+        vacc0x0123 = vpadalq_s16(vacc0x0123, vprod0x0123c2);
+        vacc1x0123 = vpadalq_s16(vacc1x0123, vprod1x0123c2);
+        int16x8_t vprod0x4567c2 = vmull_s8(vb4567c2x0, va0x0);
+        int16x8_t vprod1x4567c2 = vmull_s8(vb4567c2x0, va1x0);
+        vacc0x4567 = vpadalq_s16(vacc0x4567, vprod0x4567c2);
+        vacc1x4567 = vpadalq_s16(vacc1x4567, vprod1x4567c2);
+        int16x8_t vprod0x89ABc2 = vmull_s8(vb89ABc2x0, va0x0);
+        int16x8_t vprod1x89ABc2 = vmull_s8(vb89ABc2x0, va1x0);
+        vacc0x89AB = vpadalq_s16(vacc0x89AB, vprod0x89ABc2);
+        vacc1x89AB = vpadalq_s16(vacc1x89AB, vprod1x89ABc2);
+        int16x8_t vprod0xCDEFc2 = vmull_s8(vbCDEFc2x0, va0x0);
+        int16x8_t vprod1xCDEFc2 = vmull_s8(vbCDEFc2x0, va1x0);
+        vacc0xCDEF = vpadalq_s16(vacc0xCDEF, vprod0xCDEFc2);
+        vacc1xCDEF = vpadalq_s16(vacc1xCDEF, vprod1xCDEFc2);
+        va0x0 = vext_s8(va0x0, va0x0, 2);
+        va1x0 = vext_s8(va1x0, va1x0, 2);
+        int16x8_t vprod0x0123c3 = vmull_s8(vb0123c3x0, va0x0);
+        int16x8_t vprod1x0123c3 = vmull_s8(vb0123c3x0, va1x0);
+        vacc0x0123 = vpadalq_s16(vacc0x0123, vprod0x0123c3);
+        vacc1x0123 = vpadalq_s16(vacc1x0123, vprod1x0123c3);
+        int16x8_t vprod0x4567c3 = vmull_s8(vb4567c3x0, va0x0);
+        int16x8_t vprod1x4567c3 = vmull_s8(vb4567c3x0, va1x0);
+        vacc0x4567 = vpadalq_s16(vacc0x4567, vprod0x4567c3);
+        vacc1x4567 = vpadalq_s16(vacc1x4567, vprod1x4567c3);
+        int16x8_t vprod0x89ABc3 = vmull_s8(vb89ABc3x0, va0x0);
+        int16x8_t vprod1x89ABc3 = vmull_s8(vb89ABc3x0, va1x0);
+        vacc0x89AB = vpadalq_s16(vacc0x89AB, vprod0x89ABc3);
+        vacc1x89AB = vpadalq_s16(vacc1x89AB, vprod1x89ABc3);
+        int16x8_t vprod0xCDEFc3 = vmull_s8(vbCDEFc3x0, va0x0);
+        int16x8_t vprod1xCDEFc3 = vmull_s8(vbCDEFc3x0, va1x0);
+        vacc0xCDEF = vpadalq_s16(vacc0xCDEF, vprod0xCDEFc3);
+        vacc1xCDEF = vpadalq_s16(vacc1xCDEF, vprod1xCDEFc3);
+
+        k -= 8 * sizeof(int8_t);
+      }
+
+      if XNN_UNLIKELY(k != 0) {
+        const int8x8_t va0 = vld1_s8(a0); a0 = (const int8_t*) ((uintptr_t) a0 + k);
+        const int8x8_t va1 = vld1_s8(a1); a1 = (const int8_t*) ((uintptr_t) a1 + k);
+
+        const int8x8_t vb0123c0 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+        const int8x8_t vb4567c0 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+        const int8x8_t vb89ABc0 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+        const int8x8_t vbCDEFc0 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+
+        const int16x8_t vprod0x0123c0 = vmull_s8(vb0123c0, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va0), 0)));
+        vacc0x0123 = vpadalq_s16(vacc0x0123, vprod0x0123c0);
+        const int16x8_t vprod0x4567c0 = vmull_s8(vb4567c0, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va0), 0)));
+        vacc0x4567 = vpadalq_s16(vacc0x4567, vprod0x4567c0);
+        const int16x8_t vprod0x89ABc0 = vmull_s8(vb89ABc0, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va0), 0)));
+        vacc0x89AB = vpadalq_s16(vacc0x89AB, vprod0x89ABc0);
+        const int16x8_t vprod0xCDEFc0 = vmull_s8(vbCDEFc0, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va0), 0)));
+        vacc0xCDEF = vpadalq_s16(vacc0xCDEF, vprod0xCDEFc0);
+        const int16x8_t vprod1x0123c0 = vmull_s8(vb0123c0, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va1), 0)));
+        vacc1x0123 = vpadalq_s16(vacc1x0123, vprod1x0123c0);
+        const int16x8_t vprod1x4567c0 = vmull_s8(vb4567c0, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va1), 0)));
+        vacc1x4567 = vpadalq_s16(vacc1x4567, vprod1x4567c0);
+        const int16x8_t vprod1x89ABc0 = vmull_s8(vb89ABc0, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va1), 0)));
+        vacc1x89AB = vpadalq_s16(vacc1x89AB, vprod1x89ABc0);
+        const int16x8_t vprod1xCDEFc0 = vmull_s8(vbCDEFc0, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va1), 0)));
+        vacc1xCDEF = vpadalq_s16(vacc1xCDEF, vprod1xCDEFc0);
+
+        if (k > 2 * sizeof(int8_t)) {
+          const int8x8_t vb0123c1 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+          const int8x8_t vb4567c1 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+          const int8x8_t vb89ABc1 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+          const int8x8_t vbCDEFc1 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+
+          const int16x8_t vprod0x0123c1 = vmull_s8(vb0123c1, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va0), 1)));
+          vacc0x0123 = vpadalq_s16(vacc0x0123, vprod0x0123c1);
+          const int16x8_t vprod0x4567c1 = vmull_s8(vb4567c1, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va0), 1)));
+          vacc0x4567 = vpadalq_s16(vacc0x4567, vprod0x4567c1);
+          const int16x8_t vprod0x89ABc1 = vmull_s8(vb89ABc1, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va0), 1)));
+          vacc0x89AB = vpadalq_s16(vacc0x89AB, vprod0x89ABc1);
+          const int16x8_t vprod0xCDEFc1 = vmull_s8(vbCDEFc1, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va0), 1)));
+          vacc0xCDEF = vpadalq_s16(vacc0xCDEF, vprod0xCDEFc1);
+          const int16x8_t vprod1x0123c1 = vmull_s8(vb0123c1, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va1), 1)));
+          vacc1x0123 = vpadalq_s16(vacc1x0123, vprod1x0123c1);
+          const int16x8_t vprod1x4567c1 = vmull_s8(vb4567c1, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va1), 1)));
+          vacc1x4567 = vpadalq_s16(vacc1x4567, vprod1x4567c1);
+          const int16x8_t vprod1x89ABc1 = vmull_s8(vb89ABc1, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va1), 1)));
+          vacc1x89AB = vpadalq_s16(vacc1x89AB, vprod1x89ABc1);
+          const int16x8_t vprod1xCDEFc1 = vmull_s8(vbCDEFc1, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va1), 1)));
+          vacc1xCDEF = vpadalq_s16(vacc1xCDEF, vprod1xCDEFc1);
+
+          if (k > 4 * sizeof(int8_t)) {
+            const int8x8_t vb0123c2 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+            const int8x8_t vb4567c2 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+            const int8x8_t vb89ABc2 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+            const int8x8_t vbCDEFc2 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+
+            const int16x8_t vprod0x0123c2 = vmull_s8(vb0123c2, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va0), 2)));
+            vacc0x0123 = vpadalq_s16(vacc0x0123, vprod0x0123c2);
+            const int16x8_t vprod0x4567c2 = vmull_s8(vb4567c2, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va0), 2)));
+            vacc0x4567 = vpadalq_s16(vacc0x4567, vprod0x4567c2);
+            const int16x8_t vprod0x89ABc2 = vmull_s8(vb89ABc2, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va0), 2)));
+            vacc0x89AB = vpadalq_s16(vacc0x89AB, vprod0x89ABc2);
+            const int16x8_t vprod0xCDEFc2 = vmull_s8(vbCDEFc2, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va0), 2)));
+            vacc0xCDEF = vpadalq_s16(vacc0xCDEF, vprod0xCDEFc2);
+            const int16x8_t vprod1x0123c2 = vmull_s8(vb0123c2, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va1), 2)));
+            vacc1x0123 = vpadalq_s16(vacc1x0123, vprod1x0123c2);
+            const int16x8_t vprod1x4567c2 = vmull_s8(vb4567c2, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va1), 2)));
+            vacc1x4567 = vpadalq_s16(vacc1x4567, vprod1x4567c2);
+            const int16x8_t vprod1x89ABc2 = vmull_s8(vb89ABc2, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va1), 2)));
+            vacc1x89AB = vpadalq_s16(vacc1x89AB, vprod1x89ABc2);
+            const int16x8_t vprod1xCDEFc2 = vmull_s8(vbCDEFc2, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va1), 2)));
+            vacc1xCDEF = vpadalq_s16(vacc1xCDEF, vprod1xCDEFc2);
+
+            if (k > 6 * sizeof(int8_t)) {
+              const int8x8_t vb0123c2 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+              const int8x8_t vb4567c2 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+              const int8x8_t vb89ABc2 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+              const int8x8_t vbCDEFc2 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+
+              const int16x8_t vprod0x0123c2 = vmull_s8(vb0123c2, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va0), 3)));
+              vacc0x0123 = vpadalq_s16(vacc0x0123, vprod0x0123c2);
+              const int16x8_t vprod0x4567c2 = vmull_s8(vb4567c2, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va0), 3)));
+              vacc0x4567 = vpadalq_s16(vacc0x4567, vprod0x4567c2);
+              const int16x8_t vprod0x89ABc2 = vmull_s8(vb89ABc2, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va0), 3)));
+              vacc0x89AB = vpadalq_s16(vacc0x89AB, vprod0x89ABc2);
+              const int16x8_t vprod0xCDEFc2 = vmull_s8(vbCDEFc2, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va0), 3)));
+              vacc0xCDEF = vpadalq_s16(vacc0xCDEF, vprod0xCDEFc2);
+              const int16x8_t vprod1x0123c2 = vmull_s8(vb0123c2, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va1), 3)));
+              vacc1x0123 = vpadalq_s16(vacc1x0123, vprod1x0123c2);
+              const int16x8_t vprod1x4567c2 = vmull_s8(vb4567c2, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va1), 3)));
+              vacc1x4567 = vpadalq_s16(vacc1x4567, vprod1x4567c2);
+              const int16x8_t vprod1x89ABc2 = vmull_s8(vb89ABc2, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va1), 3)));
+              vacc1x89AB = vpadalq_s16(vacc1x89AB, vprod1x89ABc2);
+              const int16x8_t vprod1xCDEFc2 = vmull_s8(vbCDEFc2, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va1), 3)));
+              vacc1xCDEF = vpadalq_s16(vacc1xCDEF, vprod1xCDEFc2);
+            }
+          }
+        }
+      }
+      p -= 2 * sizeof(void*);
+    } while (p != 0);
+
+    const int32x4_t vright_pre_shift = vld1q_dup_s32(&params->rndnu_neon.right_pre_shift);
+    const int32x4_t vmultiplier = vld1q_dup_s32(&params->rndnu_neon.multiplier);
+    const int32x4_t vright_post_shift = vld1q_dup_s32(&params->rndnu_neon.right_post_shift);
+
+    vacc0x0123 = vshlq_s32(vacc0x0123, vright_pre_shift);
+    vacc0x4567 = vshlq_s32(vacc0x4567, vright_pre_shift);
+    vacc0x89AB = vshlq_s32(vacc0x89AB, vright_pre_shift);
+    vacc0xCDEF = vshlq_s32(vacc0xCDEF, vright_pre_shift);
+    vacc1x0123 = vshlq_s32(vacc1x0123, vright_pre_shift);
+    vacc1x4567 = vshlq_s32(vacc1x4567, vright_pre_shift);
+    vacc1x89AB = vshlq_s32(vacc1x89AB, vright_pre_shift);
+    vacc1xCDEF = vshlq_s32(vacc1xCDEF, vright_pre_shift);
+
+    vacc0x0123 = vqdmulhq_s32(vacc0x0123, vmultiplier);
+    vacc0x4567 = vqdmulhq_s32(vacc0x4567, vmultiplier);
+    vacc0x89AB = vqdmulhq_s32(vacc0x89AB, vmultiplier);
+    vacc0xCDEF = vqdmulhq_s32(vacc0xCDEF, vmultiplier);
+    vacc1x0123 = vqdmulhq_s32(vacc1x0123, vmultiplier);
+    vacc1x4567 = vqdmulhq_s32(vacc1x4567, vmultiplier);
+    vacc1x89AB = vqdmulhq_s32(vacc1x89AB, vmultiplier);
+    vacc1xCDEF = vqdmulhq_s32(vacc1xCDEF, vmultiplier);
+
+    vacc0x0123 = vrshlq_s32(vacc0x0123, vright_post_shift);
+    vacc0x4567 = vrshlq_s32(vacc0x4567, vright_post_shift);
+    vacc0x89AB = vrshlq_s32(vacc0x89AB, vright_post_shift);
+    vacc0xCDEF = vrshlq_s32(vacc0xCDEF, vright_post_shift);
+    vacc1x0123 = vrshlq_s32(vacc1x0123, vright_post_shift);
+    vacc1x4567 = vrshlq_s32(vacc1x4567, vright_post_shift);
+    vacc1x89AB = vrshlq_s32(vacc1x89AB, vright_post_shift);
+    vacc1xCDEF = vrshlq_s32(vacc1xCDEF, vright_post_shift);
+
+    const int16x8_t voutput_zero_point = vld1q_dup_s16(&params->rndnu_neon.output_zero_point);
+#if XNN_ARCH_ARM64
+    const int16x8_t vacc0x01234567 = vqaddq_s16(vqmovn_high_s32(vqmovn_s32(vacc0x0123), vacc0x4567), voutput_zero_point);
+    const int16x8_t vacc0x89ABCDEF = vqaddq_s16(vqmovn_high_s32(vqmovn_s32(vacc0x89AB), vacc0xCDEF), voutput_zero_point);
+    const int16x8_t vacc1x01234567 = vqaddq_s16(vqmovn_high_s32(vqmovn_s32(vacc1x0123), vacc1x4567), voutput_zero_point);
+    const int16x8_t vacc1x89ABCDEF = vqaddq_s16(vqmovn_high_s32(vqmovn_s32(vacc1x89AB), vacc1xCDEF), voutput_zero_point);
+
+    int8x16_t vout0x0123456789ABCDEF = vqmovn_high_s16(vqmovn_s16(vacc0x01234567), vacc0x89ABCDEF);
+    int8x16_t vout1x0123456789ABCDEF = vqmovn_high_s16(vqmovn_s16(vacc1x01234567), vacc1x89ABCDEF);
+#else
+    const int16x8_t vacc0x01234567 = vqaddq_s16(vcombine_s16(vqmovn_s32(vacc0x0123), vqmovn_s32(vacc0x4567)), voutput_zero_point);
+    const int16x8_t vacc0x89ABCDEF = vqaddq_s16(vcombine_s16(vqmovn_s32(vacc0x89AB), vqmovn_s32(vacc0xCDEF)), voutput_zero_point);
+    const int16x8_t vacc1x01234567 = vqaddq_s16(vcombine_s16(vqmovn_s32(vacc1x0123), vqmovn_s32(vacc1x4567)), voutput_zero_point);
+    const int16x8_t vacc1x89ABCDEF = vqaddq_s16(vcombine_s16(vqmovn_s32(vacc1x89AB), vqmovn_s32(vacc1xCDEF)), voutput_zero_point);
+
+    int8x16_t vout0x0123456789ABCDEF = vcombine_s8(vqmovn_s16(vacc0x01234567), vqmovn_s16(vacc0x89ABCDEF));
+    int8x16_t vout1x0123456789ABCDEF = vcombine_s8(vqmovn_s16(vacc1x01234567), vqmovn_s16(vacc1x89ABCDEF));
+#endif
+    const int8x16_t voutput_min = vld1q_dup_s8(&params->rndnu_neon.output_min);
+    const int8x16_t voutput_max = vld1q_dup_s8(&params->rndnu_neon.output_max);
+
+    vout1x0123456789ABCDEF = vmaxq_s8(vout1x0123456789ABCDEF, voutput_min);
+    vout0x0123456789ABCDEF = vmaxq_s8(vout0x0123456789ABCDEF, voutput_min);
+
+    vout1x0123456789ABCDEF = vminq_s8(vout1x0123456789ABCDEF, voutput_max);
+    vout0x0123456789ABCDEF = vminq_s8(vout0x0123456789ABCDEF, voutput_max);
+
+    if (nc >= 16) {
+      vst1q_s8(c1 + 0, vout1x0123456789ABCDEF);
+      vst1q_s8(c0 + 0, vout0x0123456789ABCDEF);
+
+      c1 = (int8_t*) ((uintptr_t) c1 + cn_stride);
+      c0 = (int8_t*) ((uintptr_t) c0 + cn_stride);
+
+      a = (const int8_t**restrict) ((uintptr_t) a - ks);
+
+      nc -= 16;
+    } else {
+      int8x16_t vout0x01234567_1x01234567 = vcombine_s8(vget_low_s8(vout0x0123456789ABCDEF), vget_low_s8(vout1x0123456789ABCDEF));
+      if (nc & 8) {
+        vst1_s8(c1, vget_high_s8(vout0x01234567_1x01234567)); c1 += 8;
+        vst1_s8(c0, vget_low_s8(vout0x01234567_1x01234567)); c0 += 8;
+        vout0x01234567_1x01234567 = vcombine_s8(vget_high_s8(vout0x0123456789ABCDEF), vget_high_s8(vout1x0123456789ABCDEF));
+      }
+      if (nc & 4) {
+        vst1q_lane_u32(__builtin_assume_aligned(c1, 1), vreinterpretq_u32_s8(vout0x01234567_1x01234567), 2); c1 += 4;
+        vst1q_lane_u32(__builtin_assume_aligned(c0, 1), vreinterpretq_u32_s8(vout0x01234567_1x01234567), 0); c0 += 4;
+        vout0x01234567_1x01234567 = vextq_s8(vout0x01234567_1x01234567, vout0x01234567_1x01234567, 4);
+      }
+      if (nc & 2) {
+        vst1q_lane_u16(__builtin_assume_aligned(c1, 1), vreinterpretq_u16_s8(vout0x01234567_1x01234567), 4); c1 += 2;
+        vst1q_lane_u16(__builtin_assume_aligned(c0, 1), vreinterpretq_u16_s8(vout0x01234567_1x01234567), 0); c0 += 2;
+        vout0x01234567_1x01234567 = vextq_s8(vout0x01234567_1x01234567, vout0x01234567_1x01234567, 2);
+      }
+      if (nc & 1) {
+        vst1q_lane_s8(c1, vout0x01234567_1x01234567, 8);
+        vst1q_lane_s8(c0, vout0x01234567_1x01234567, 0);
+      }
+
+      nc = 0;
+    }
+  } while (nc != 0);
+}
diff --git a/src/qs8-igemm/gen/2x8s4c2-minmax-rndnu-neon-mlal-padal.c b/src/qs8-igemm/gen/2x8c2s4-minmax-fp32-neon-mlal-padal.c
similarity index 84%
copy from src/qs8-igemm/gen/2x8s4c2-minmax-rndnu-neon-mlal-padal.c
copy to src/qs8-igemm/gen/2x8c2s4-minmax-fp32-neon-mlal-padal.c
index 4b97f1b..c5235d5 100644
--- a/src/qs8-igemm/gen/2x8s4c2-minmax-rndnu-neon-mlal-padal.c
+++ b/src/qs8-igemm/gen/2x8c2s4-minmax-fp32-neon-mlal-padal.c
@@ -15,7 +15,7 @@
 #include <xnnpack/math.h>
 
 
-void xnn_qs8_igemm_minmax_rndnu_ukernel_2x8s4c2__neon_mlal_padal(
+void xnn_qs8_igemm_minmax_fp32_ukernel_2x8c2s4__neon_mlal_padal(
     size_t mr,
     size_t nc,
     size_t kc,
@@ -269,43 +269,52 @@
       p -= 2 * sizeof(void*);
     } while (p != 0);
 
-    const int32x4_t vright_pre_shift = vld1q_dup_s32(&params->rndnu_neon.right_pre_shift);
-    const int32x4_t vmultiplier = vld1q_dup_s32(&params->rndnu_neon.multiplier);
-    const int32x4_t vright_post_shift = vld1q_dup_s32(&params->rndnu_neon.right_post_shift);
+    float32x4_t vfpacc0x0123 = vcvtq_f32_s32(vacc0x0123);
+    float32x4_t vfpacc0x4567 = vcvtq_f32_s32(vacc0x4567);
+    float32x4_t vfpacc1x0123 = vcvtq_f32_s32(vacc1x0123);
+    float32x4_t vfpacc1x4567 = vcvtq_f32_s32(vacc1x4567);
 
-    vacc0x0123 = vshlq_s32(vacc0x0123, vright_pre_shift);
-    vacc0x4567 = vshlq_s32(vacc0x4567, vright_pre_shift);
-    vacc1x0123 = vshlq_s32(vacc1x0123, vright_pre_shift);
-    vacc1x4567 = vshlq_s32(vacc1x4567, vright_pre_shift);
+    const float32x4_t vscale = vld1q_dup_f32(&params->fp32_neon.scale);
+    vfpacc0x0123 = vmulq_f32(vfpacc0x0123, vscale);
+    vfpacc0x4567 = vmulq_f32(vfpacc0x4567, vscale);
+    vfpacc1x0123 = vmulq_f32(vfpacc1x0123, vscale);
+    vfpacc1x4567 = vmulq_f32(vfpacc1x4567, vscale);
 
-    vacc0x0123 = vqdmulhq_s32(vacc0x0123, vmultiplier);
-    vacc0x4567 = vqdmulhq_s32(vacc0x4567, vmultiplier);
-    vacc1x0123 = vqdmulhq_s32(vacc1x0123, vmultiplier);
-    vacc1x4567 = vqdmulhq_s32(vacc1x4567, vmultiplier);
+    const float32x4_t voutput_min_less_zero_point = vld1q_dup_f32(&params->fp32_neon.output_min_less_zero_point);
+    vfpacc0x0123 = vmaxq_f32(vfpacc0x0123, voutput_min_less_zero_point);
+    vfpacc0x4567 = vmaxq_f32(vfpacc0x4567, voutput_min_less_zero_point);
+    vfpacc1x0123 = vmaxq_f32(vfpacc1x0123, voutput_min_less_zero_point);
+    vfpacc1x4567 = vmaxq_f32(vfpacc1x4567, voutput_min_less_zero_point);
 
-    vacc0x0123 = vrshlq_s32(vacc0x0123, vright_post_shift);
-    vacc0x4567 = vrshlq_s32(vacc0x4567, vright_post_shift);
-    vacc1x0123 = vrshlq_s32(vacc1x0123, vright_post_shift);
-    vacc1x4567 = vrshlq_s32(vacc1x4567, vright_post_shift);
+    const float32x4_t voutput_max_less_zero_point = vld1q_dup_f32(&params->fp32_neon.output_max_less_zero_point);
+    vfpacc0x0123 = vminq_f32(vfpacc0x0123, voutput_max_less_zero_point);
+    vfpacc0x4567 = vminq_f32(vfpacc0x4567, voutput_max_less_zero_point);
+    vfpacc1x0123 = vminq_f32(vfpacc1x0123, voutput_max_less_zero_point);
+    vfpacc1x4567 = vminq_f32(vfpacc1x4567, voutput_max_less_zero_point);
 
-    const int16x8_t voutput_zero_point = vld1q_dup_s16(&params->rndnu_neon.output_zero_point);
+    const float32x4_t vmagic_bias = vld1q_dup_f32(&params->fp32_neon.magic_bias);
+    vacc0x0123 = vreinterpretq_s32_f32(vaddq_f32(vfpacc0x0123, vmagic_bias));
+    vacc0x4567 = vreinterpretq_s32_f32(vaddq_f32(vfpacc0x4567, vmagic_bias));
+    vacc1x0123 = vreinterpretq_s32_f32(vaddq_f32(vfpacc1x0123, vmagic_bias));
+    vacc1x4567 = vreinterpretq_s32_f32(vaddq_f32(vfpacc1x4567, vmagic_bias));
+
+    const int32x4_t vmagic_bias_less_zero_point = vld1q_dup_s32(&params->fp32_neon.magic_bias_less_zero_point);
+    vacc0x0123 = vsubq_s32(vacc0x0123, vmagic_bias_less_zero_point);
+    vacc0x4567 = vsubq_s32(vacc0x4567, vmagic_bias_less_zero_point);
+    vacc1x0123 = vsubq_s32(vacc1x0123, vmagic_bias_less_zero_point);
+    vacc1x4567 = vsubq_s32(vacc1x4567, vmagic_bias_less_zero_point);
+
 #if XNN_ARCH_ARM64
-    const int16x8_t vacc0x01234567 = vqaddq_s16(vqmovn_high_s32(vqmovn_s32(vacc0x0123), vacc0x4567), voutput_zero_point);
-    const int16x8_t vacc1x01234567 = vqaddq_s16(vqmovn_high_s32(vqmovn_s32(vacc1x0123), vacc1x4567), voutput_zero_point);
+    const int16x8_t vacc0x01234567 = vuzp1q_s16(vreinterpretq_s16_s32(vacc0x0123), vreinterpretq_s16_s32(vacc0x4567));
+    const int16x8_t vacc1x01234567 = vuzp1q_s16(vreinterpretq_s16_s32(vacc1x0123), vreinterpretq_s16_s32(vacc1x4567));
 
-    int8x16_t vout0x01234567_1x01234567 = vqmovn_high_s16(vqmovn_s16(vacc0x01234567), vacc1x01234567);
+    int8x16_t vout0x01234567_1x01234567 = vuzp1q_s8(vreinterpretq_s8_s16(vacc0x01234567), vreinterpretq_s8_s16(vacc1x01234567));
 #else
-    const int16x8_t vacc0x01234567 = vqaddq_s16(vcombine_s16(vqmovn_s32(vacc0x0123), vqmovn_s32(vacc0x4567)), voutput_zero_point);
-    const int16x8_t vacc1x01234567 = vqaddq_s16(vcombine_s16(vqmovn_s32(vacc1x0123), vqmovn_s32(vacc1x4567)), voutput_zero_point);
+    const int16x8_t vacc0x01234567 = vcombine_s16(vmovn_s32(vacc0x0123), vmovn_s32(vacc0x4567));
+    const int16x8_t vacc1x01234567 = vcombine_s16(vmovn_s32(vacc1x0123), vmovn_s32(vacc1x4567));
 
-    int8x16_t vout0x01234567_1x01234567 = vcombine_s8(vqmovn_s16(vacc0x01234567), vqmovn_s16(vacc1x01234567));
+    int8x16_t vout0x01234567_1x01234567 = vcombine_s8(vmovn_s16(vacc0x01234567), vmovn_s16(vacc1x01234567));
 #endif
-    const int8x16_t voutput_min = vld1q_dup_s8(&params->rndnu_neon.output_min);
-    const int8x16_t voutput_max = vld1q_dup_s8(&params->rndnu_neon.output_max);
-
-    vout0x01234567_1x01234567 = vmaxq_s8(vout0x01234567_1x01234567, voutput_min);
-
-    vout0x01234567_1x01234567 = vminq_s8(vout0x01234567_1x01234567, voutput_max);
 
     if (nc >= 8) {
       vst1_s8(c1 + 0, vget_high_s8(vout0x01234567_1x01234567));
diff --git a/src/qs8-igemm/gen/2x8s4c2-minmax-rndnu-neon-mlal-padal.c b/src/qs8-igemm/gen/2x8c2s4-minmax-fp32-neonv8-mlal-padal.c
similarity index 93%
copy from src/qs8-igemm/gen/2x8s4c2-minmax-rndnu-neon-mlal-padal.c
copy to src/qs8-igemm/gen/2x8c2s4-minmax-fp32-neonv8-mlal-padal.c
index 4b97f1b..e0febc0 100644
--- a/src/qs8-igemm/gen/2x8s4c2-minmax-rndnu-neon-mlal-padal.c
+++ b/src/qs8-igemm/gen/2x8c2s4-minmax-fp32-neonv8-mlal-padal.c
@@ -12,10 +12,11 @@
 #include <arm_neon.h>
 
 #include <xnnpack/gemm.h>
+#include <xnnpack/intrinsics-polyfill.h>
 #include <xnnpack/math.h>
 
 
-void xnn_qs8_igemm_minmax_rndnu_ukernel_2x8s4c2__neon_mlal_padal(
+void xnn_qs8_igemm_minmax_fp32_ukernel_2x8c2s4__neonv8_mlal_padal(
     size_t mr,
     size_t nc,
     size_t kc,
@@ -269,26 +270,23 @@
       p -= 2 * sizeof(void*);
     } while (p != 0);
 
-    const int32x4_t vright_pre_shift = vld1q_dup_s32(&params->rndnu_neon.right_pre_shift);
-    const int32x4_t vmultiplier = vld1q_dup_s32(&params->rndnu_neon.multiplier);
-    const int32x4_t vright_post_shift = vld1q_dup_s32(&params->rndnu_neon.right_post_shift);
+    float32x4_t vfpacc0x0123 = vcvtq_f32_s32(vacc0x0123);
+    float32x4_t vfpacc0x4567 = vcvtq_f32_s32(vacc0x4567);
+    float32x4_t vfpacc1x0123 = vcvtq_f32_s32(vacc1x0123);
+    float32x4_t vfpacc1x4567 = vcvtq_f32_s32(vacc1x4567);
 
-    vacc0x0123 = vshlq_s32(vacc0x0123, vright_pre_shift);
-    vacc0x4567 = vshlq_s32(vacc0x4567, vright_pre_shift);
-    vacc1x0123 = vshlq_s32(vacc1x0123, vright_pre_shift);
-    vacc1x4567 = vshlq_s32(vacc1x4567, vright_pre_shift);
+    const float32x4_t vscale = vld1q_dup_f32(&params->fp32_neonv8.scale);
+    vfpacc0x0123 = vmulq_f32(vfpacc0x0123, vscale);
+    vfpacc0x4567 = vmulq_f32(vfpacc0x4567, vscale);
+    vfpacc1x0123 = vmulq_f32(vfpacc1x0123, vscale);
+    vfpacc1x4567 = vmulq_f32(vfpacc1x4567, vscale);
 
-    vacc0x0123 = vqdmulhq_s32(vacc0x0123, vmultiplier);
-    vacc0x4567 = vqdmulhq_s32(vacc0x4567, vmultiplier);
-    vacc1x0123 = vqdmulhq_s32(vacc1x0123, vmultiplier);
-    vacc1x4567 = vqdmulhq_s32(vacc1x4567, vmultiplier);
+    vacc0x0123 = vcvtnq_s32_f32(vfpacc0x0123);
+    vacc0x4567 = vcvtnq_s32_f32(vfpacc0x4567);
+    vacc1x0123 = vcvtnq_s32_f32(vfpacc1x0123);
+    vacc1x4567 = vcvtnq_s32_f32(vfpacc1x4567);
 
-    vacc0x0123 = vrshlq_s32(vacc0x0123, vright_post_shift);
-    vacc0x4567 = vrshlq_s32(vacc0x4567, vright_post_shift);
-    vacc1x0123 = vrshlq_s32(vacc1x0123, vright_post_shift);
-    vacc1x4567 = vrshlq_s32(vacc1x4567, vright_post_shift);
-
-    const int16x8_t voutput_zero_point = vld1q_dup_s16(&params->rndnu_neon.output_zero_point);
+    const int16x8_t voutput_zero_point = vld1q_dup_s16(&params->fp32_neonv8.output_zero_point);
 #if XNN_ARCH_ARM64
     const int16x8_t vacc0x01234567 = vqaddq_s16(vqmovn_high_s32(vqmovn_s32(vacc0x0123), vacc0x4567), voutput_zero_point);
     const int16x8_t vacc1x01234567 = vqaddq_s16(vqmovn_high_s32(vqmovn_s32(vacc1x0123), vacc1x4567), voutput_zero_point);
@@ -300,8 +298,8 @@
 
     int8x16_t vout0x01234567_1x01234567 = vcombine_s8(vqmovn_s16(vacc0x01234567), vqmovn_s16(vacc1x01234567));
 #endif
-    const int8x16_t voutput_min = vld1q_dup_s8(&params->rndnu_neon.output_min);
-    const int8x16_t voutput_max = vld1q_dup_s8(&params->rndnu_neon.output_max);
+    const int8x16_t voutput_min = vld1q_dup_s8(&params->fp32_neonv8.output_min);
+    const int8x16_t voutput_max = vld1q_dup_s8(&params->fp32_neonv8.output_max);
 
     vout0x01234567_1x01234567 = vmaxq_s8(vout0x01234567_1x01234567, voutput_min);
 
diff --git a/src/qs8-igemm/gen/2x8s4c2-minmax-rndnu-neon-mlal-padal.c b/src/qs8-igemm/gen/2x8c2s4-minmax-rndnu-neon-mlal-padal.c
similarity index 99%
rename from src/qs8-igemm/gen/2x8s4c2-minmax-rndnu-neon-mlal-padal.c
rename to src/qs8-igemm/gen/2x8c2s4-minmax-rndnu-neon-mlal-padal.c
index 4b97f1b..173e067 100644
--- a/src/qs8-igemm/gen/2x8s4c2-minmax-rndnu-neon-mlal-padal.c
+++ b/src/qs8-igemm/gen/2x8c2s4-minmax-rndnu-neon-mlal-padal.c
@@ -15,7 +15,7 @@
 #include <xnnpack/math.h>
 
 
-void xnn_qs8_igemm_minmax_rndnu_ukernel_2x8s4c2__neon_mlal_padal(
+void xnn_qs8_igemm_minmax_rndnu_ukernel_2x8c2s4__neon_mlal_padal(
     size_t mr,
     size_t nc,
     size_t kc,
diff --git a/src/qs8-igemm/gen/2x8s4c2-minmax-rndnu-neon-mull-padal.c b/src/qs8-igemm/gen/2x8c2s4-minmax-rndnu-neon-mull-padal.c
similarity index 99%
rename from src/qs8-igemm/gen/2x8s4c2-minmax-rndnu-neon-mull-padal.c
rename to src/qs8-igemm/gen/2x8c2s4-minmax-rndnu-neon-mull-padal.c
index eaad097..5f1cf14 100644
--- a/src/qs8-igemm/gen/2x8s4c2-minmax-rndnu-neon-mull-padal.c
+++ b/src/qs8-igemm/gen/2x8c2s4-minmax-rndnu-neon-mull-padal.c
@@ -15,7 +15,7 @@
 #include <xnnpack/math.h>
 
 
-void xnn_qs8_igemm_minmax_rndnu_ukernel_2x8s4c2__neon_mull_padal(
+void xnn_qs8_igemm_minmax_rndnu_ukernel_2x8c2s4__neon_mull_padal(
     size_t mr,
     size_t nc,
     size_t kc,
diff --git a/src/qs8-igemm/gen/3x16c2s4-minmax-rndnu-neon-mlal-padal.c b/src/qs8-igemm/gen/3x16c2s4-minmax-rndnu-neon-mlal-padal.c
new file mode 100644
index 0000000..d0da12d
--- /dev/null
+++ b/src/qs8-igemm/gen/3x16c2s4-minmax-rndnu-neon-mlal-padal.c
@@ -0,0 +1,680 @@
+// Auto-generated file. Do not edit!
+//   Template: src/qs8-igemm/c2-neon-mull-padal-shuffle.c.in
+//   Generator: tools/xngen
+//
+// Copyright 2021 Google LLC
+//
+// This source code is licensed under the BSD-style license found in the
+// LICENSE file in the root directory of this source tree.
+
+#include <assert.h>
+
+#include <arm_neon.h>
+
+#include <xnnpack/gemm.h>
+#include <xnnpack/math.h>
+
+
+void xnn_qs8_igemm_minmax_rndnu_ukernel_3x16c2s4__neon_mlal_padal(
+    size_t mr,
+    size_t nc,
+    size_t kc,
+    size_t ks,
+    const int8_t** restrict a,
+    const void* restrict w,
+    int8_t* restrict c,
+    size_t cm_stride,
+    size_t cn_stride,
+    size_t a_offset,
+    const int8_t* zero,
+    const union xnn_qs8_conv_minmax_params params[restrict XNN_MIN_ELEMENTS(1)]) XNN_DISABLE_TSAN XNN_DISABLE_MSAN
+{
+  assert(mr != 0);
+  assert(mr <= 3);
+  assert(nc != 0);
+  assert(kc != 0);
+  assert(ks != 0);
+  assert(ks % (3 * sizeof(void*)) == 0);
+  assert(a_offset % sizeof(int8_t) == 0);
+  assert(a != NULL);
+  assert(w != NULL);
+  assert(c != NULL);
+
+  int8_t* c0 = c;
+  int8_t* c1 = (int8_t*) ((uintptr_t) c0 + cm_stride);
+  if XNN_UNPREDICTABLE(mr < 2) {
+    c1 = c0;
+  }
+  int8_t* c2 = (int8_t*) ((uintptr_t) c1 + cm_stride);
+  if XNN_UNPREDICTABLE(mr <= 2) {
+    c2 = c1;
+  }
+
+  do {
+    int32x4_t vacc0x0123 = vld1q_s32(w); w = (const void*) ((uintptr_t) w + 4 * sizeof(int32_t));
+    int32x4_t vacc0x4567 = vld1q_s32(w); w = (const void*) ((uintptr_t) w + 4 * sizeof(int32_t));
+    int32x4_t vacc0x89AB = vld1q_s32(w); w = (const void*) ((uintptr_t) w + 4 * sizeof(int32_t));
+    int32x4_t vacc0xCDEF = vld1q_s32(w); w = (const void*) ((uintptr_t) w + 4 * sizeof(int32_t));
+    int32x4_t vacc1x0123 = vacc0x0123;
+    int32x4_t vacc1x4567 = vacc0x4567;
+    int32x4_t vacc1x89AB = vacc0x89AB;
+    int32x4_t vacc1xCDEF = vacc0xCDEF;
+    int32x4_t vacc2x0123 = vacc0x0123;
+    int32x4_t vacc2x4567 = vacc0x4567;
+    int32x4_t vacc2x89AB = vacc0x89AB;
+    int32x4_t vacc2xCDEF = vacc0xCDEF;
+
+    size_t p = ks;
+    do {
+      const int8_t* restrict a0 = a[0];
+      if XNN_UNPREDICTABLE(a0 != zero) {
+        a0 = (const int8_t*) ((uintptr_t) a0 + a_offset);
+      }
+      const int8_t* restrict a1 = a[1];
+      if XNN_UNPREDICTABLE(a1 != zero) {
+        a1 = (const int8_t*) ((uintptr_t) a1 + a_offset);
+      }
+      const int8_t* restrict a2 = a[2];
+      if XNN_UNPREDICTABLE(a2 != zero) {
+        a2 = (const int8_t*) ((uintptr_t) a2 + a_offset);
+      }
+      a += 3;
+
+      size_t k = kc;
+
+      while (k >= 16 * sizeof(int8_t)) {
+        int8x8_t va0x0 = vld1_s8(a0); a0 += 8;
+        int8x8_t va0x1 = vld1_s8(a0); a0 += 8;
+        int8x8_t va1x0 = vld1_s8(a1); a1 += 8;
+        int8x8_t va1x1 = vld1_s8(a1); a1 += 8;
+        int8x8_t va2x0 = vld1_s8(a2); a2 += 8;
+        int8x8_t va2x1 = vld1_s8(a2); a2 += 8;
+
+        const int8x8_t vb0123c0x0 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+        const int8x8_t vb4567c0x0 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+        const int8x8_t vb89ABc0x0 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+        const int8x8_t vbCDEFc0x0 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+        const int8x8_t vb0123c1x0 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+        const int8x8_t vb4567c1x0 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+        const int8x8_t vb89ABc1x0 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+        const int8x8_t vbCDEFc1x0 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+        const int8x8_t vb0123c2x0 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+        const int8x8_t vb4567c2x0 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+        const int8x8_t vb89ABc2x0 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+        const int8x8_t vbCDEFc2x0 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+        const int8x8_t vb0123c3x0 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+        const int8x8_t vb4567c3x0 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+        const int8x8_t vb89ABc3x0 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+        const int8x8_t vbCDEFc3x0 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+
+        int16x8_t vprod0x0123c0 = vmull_s8(vb0123c0x0, va0x0);
+        int16x8_t vprod1x0123c0 = vmull_s8(vb0123c0x0, va1x0);
+        int16x8_t vprod2x0123c0 = vmull_s8(vb0123c0x0, va2x0);
+        const int8x8_t vb0123c0x1 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+        vprod0x0123c0 = vmlal_s8(vprod0x0123c0, vb0123c0x1, va0x1);
+        vprod1x0123c0 = vmlal_s8(vprod1x0123c0, vb0123c0x1, va1x1);
+        vprod2x0123c0 = vmlal_s8(vprod2x0123c0, vb0123c0x1, va2x1);
+        vacc0x0123 = vpadalq_s16(vacc0x0123, vprod0x0123c0);
+        vacc1x0123 = vpadalq_s16(vacc1x0123, vprod1x0123c0);
+        vacc2x0123 = vpadalq_s16(vacc2x0123, vprod2x0123c0);
+        int16x8_t vprod0x4567c0 = vmull_s8(vb4567c0x0, va0x0);
+        int16x8_t vprod1x4567c0 = vmull_s8(vb4567c0x0, va1x0);
+        int16x8_t vprod2x4567c0 = vmull_s8(vb4567c0x0, va2x0);
+        const int8x8_t vb4567c0x1 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+        vprod0x4567c0 = vmlal_s8(vprod0x4567c0, vb4567c0x1, va0x1);
+        vprod1x4567c0 = vmlal_s8(vprod1x4567c0, vb4567c0x1, va1x1);
+        vprod2x4567c0 = vmlal_s8(vprod2x4567c0, vb4567c0x1, va2x1);
+        vacc0x4567 = vpadalq_s16(vacc0x4567, vprod0x4567c0);
+        vacc1x4567 = vpadalq_s16(vacc1x4567, vprod1x4567c0);
+        vacc2x4567 = vpadalq_s16(vacc2x4567, vprod2x4567c0);
+        int16x8_t vprod0x89ABc0 = vmull_s8(vb89ABc0x0, va0x0);
+        int16x8_t vprod1x89ABc0 = vmull_s8(vb89ABc0x0, va1x0);
+        int16x8_t vprod2x89ABc0 = vmull_s8(vb89ABc0x0, va2x0);
+        const int8x8_t vb89ABc0x1 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+        vprod0x89ABc0 = vmlal_s8(vprod0x89ABc0, vb89ABc0x1, va0x1);
+        vprod1x89ABc0 = vmlal_s8(vprod1x89ABc0, vb89ABc0x1, va1x1);
+        vprod2x89ABc0 = vmlal_s8(vprod2x89ABc0, vb89ABc0x1, va2x1);
+        vacc0x89AB = vpadalq_s16(vacc0x89AB, vprod0x89ABc0);
+        vacc1x89AB = vpadalq_s16(vacc1x89AB, vprod1x89ABc0);
+        vacc2x89AB = vpadalq_s16(vacc2x89AB, vprod2x89ABc0);
+        int16x8_t vprod0xCDEFc0 = vmull_s8(vbCDEFc0x0, va0x0);
+        int16x8_t vprod1xCDEFc0 = vmull_s8(vbCDEFc0x0, va1x0);
+        int16x8_t vprod2xCDEFc0 = vmull_s8(vbCDEFc0x0, va2x0);
+        const int8x8_t vbCDEFc0x1 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+        vprod0xCDEFc0 = vmlal_s8(vprod0xCDEFc0, vbCDEFc0x1, va0x1);
+        vprod1xCDEFc0 = vmlal_s8(vprod1xCDEFc0, vbCDEFc0x1, va1x1);
+        vprod2xCDEFc0 = vmlal_s8(vprod2xCDEFc0, vbCDEFc0x1, va2x1);
+        vacc0xCDEF = vpadalq_s16(vacc0xCDEF, vprod0xCDEFc0);
+        vacc1xCDEF = vpadalq_s16(vacc1xCDEF, vprod1xCDEFc0);
+        vacc2xCDEF = vpadalq_s16(vacc2xCDEF, vprod2xCDEFc0);
+        va0x0 = vext_s8(va0x0, va0x0, 2);
+        va0x1 = vext_s8(va0x1, va0x1, 2);
+        va1x0 = vext_s8(va1x0, va1x0, 2);
+        va1x1 = vext_s8(va1x1, va1x1, 2);
+        va2x0 = vext_s8(va2x0, va2x0, 2);
+        va2x1 = vext_s8(va2x1, va2x1, 2);
+        int16x8_t vprod0x0123c1 = vmull_s8(vb0123c1x0, va0x0);
+        int16x8_t vprod1x0123c1 = vmull_s8(vb0123c1x0, va1x0);
+        int16x8_t vprod2x0123c1 = vmull_s8(vb0123c1x0, va2x0);
+        const int8x8_t vb0123c1x1 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+        vprod0x0123c1 = vmlal_s8(vprod0x0123c1, vb0123c1x1, va0x1);
+        vprod1x0123c1 = vmlal_s8(vprod1x0123c1, vb0123c1x1, va1x1);
+        vprod2x0123c1 = vmlal_s8(vprod2x0123c1, vb0123c1x1, va2x1);
+        vacc0x0123 = vpadalq_s16(vacc0x0123, vprod0x0123c1);
+        vacc1x0123 = vpadalq_s16(vacc1x0123, vprod1x0123c1);
+        vacc2x0123 = vpadalq_s16(vacc2x0123, vprod2x0123c1);
+        int16x8_t vprod0x4567c1 = vmull_s8(vb4567c1x0, va0x0);
+        int16x8_t vprod1x4567c1 = vmull_s8(vb4567c1x0, va1x0);
+        int16x8_t vprod2x4567c1 = vmull_s8(vb4567c1x0, va2x0);
+        const int8x8_t vb4567c1x1 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+        vprod0x4567c1 = vmlal_s8(vprod0x4567c1, vb4567c1x1, va0x1);
+        vprod1x4567c1 = vmlal_s8(vprod1x4567c1, vb4567c1x1, va1x1);
+        vprod2x4567c1 = vmlal_s8(vprod2x4567c1, vb4567c1x1, va2x1);
+        vacc0x4567 = vpadalq_s16(vacc0x4567, vprod0x4567c1);
+        vacc1x4567 = vpadalq_s16(vacc1x4567, vprod1x4567c1);
+        vacc2x4567 = vpadalq_s16(vacc2x4567, vprod2x4567c1);
+        int16x8_t vprod0x89ABc1 = vmull_s8(vb89ABc1x0, va0x0);
+        int16x8_t vprod1x89ABc1 = vmull_s8(vb89ABc1x0, va1x0);
+        int16x8_t vprod2x89ABc1 = vmull_s8(vb89ABc1x0, va2x0);
+        const int8x8_t vb89ABc1x1 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+        vprod0x89ABc1 = vmlal_s8(vprod0x89ABc1, vb89ABc1x1, va0x1);
+        vprod1x89ABc1 = vmlal_s8(vprod1x89ABc1, vb89ABc1x1, va1x1);
+        vprod2x89ABc1 = vmlal_s8(vprod2x89ABc1, vb89ABc1x1, va2x1);
+        vacc0x89AB = vpadalq_s16(vacc0x89AB, vprod0x89ABc1);
+        vacc1x89AB = vpadalq_s16(vacc1x89AB, vprod1x89ABc1);
+        vacc2x89AB = vpadalq_s16(vacc2x89AB, vprod2x89ABc1);
+        int16x8_t vprod0xCDEFc1 = vmull_s8(vbCDEFc1x0, va0x0);
+        int16x8_t vprod1xCDEFc1 = vmull_s8(vbCDEFc1x0, va1x0);
+        int16x8_t vprod2xCDEFc1 = vmull_s8(vbCDEFc1x0, va2x0);
+        const int8x8_t vbCDEFc1x1 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+        vprod0xCDEFc1 = vmlal_s8(vprod0xCDEFc1, vbCDEFc1x1, va0x1);
+        vprod1xCDEFc1 = vmlal_s8(vprod1xCDEFc1, vbCDEFc1x1, va1x1);
+        vprod2xCDEFc1 = vmlal_s8(vprod2xCDEFc1, vbCDEFc1x1, va2x1);
+        vacc0xCDEF = vpadalq_s16(vacc0xCDEF, vprod0xCDEFc1);
+        vacc1xCDEF = vpadalq_s16(vacc1xCDEF, vprod1xCDEFc1);
+        vacc2xCDEF = vpadalq_s16(vacc2xCDEF, vprod2xCDEFc1);
+        va0x0 = vext_s8(va0x0, va0x0, 2);
+        va0x1 = vext_s8(va0x1, va0x1, 2);
+        va1x0 = vext_s8(va1x0, va1x0, 2);
+        va1x1 = vext_s8(va1x1, va1x1, 2);
+        va2x0 = vext_s8(va2x0, va2x0, 2);
+        va2x1 = vext_s8(va2x1, va2x1, 2);
+        int16x8_t vprod0x0123c2 = vmull_s8(vb0123c2x0, va0x0);
+        int16x8_t vprod1x0123c2 = vmull_s8(vb0123c2x0, va1x0);
+        int16x8_t vprod2x0123c2 = vmull_s8(vb0123c2x0, va2x0);
+        const int8x8_t vb0123c2x1 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+        vprod0x0123c2 = vmlal_s8(vprod0x0123c2, vb0123c2x1, va0x1);
+        vprod1x0123c2 = vmlal_s8(vprod1x0123c2, vb0123c2x1, va1x1);
+        vprod2x0123c2 = vmlal_s8(vprod2x0123c2, vb0123c2x1, va2x1);
+        vacc0x0123 = vpadalq_s16(vacc0x0123, vprod0x0123c2);
+        vacc1x0123 = vpadalq_s16(vacc1x0123, vprod1x0123c2);
+        vacc2x0123 = vpadalq_s16(vacc2x0123, vprod2x0123c2);
+        int16x8_t vprod0x4567c2 = vmull_s8(vb4567c2x0, va0x0);
+        int16x8_t vprod1x4567c2 = vmull_s8(vb4567c2x0, va1x0);
+        int16x8_t vprod2x4567c2 = vmull_s8(vb4567c2x0, va2x0);
+        const int8x8_t vb4567c2x1 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+        vprod0x4567c2 = vmlal_s8(vprod0x4567c2, vb4567c2x1, va0x1);
+        vprod1x4567c2 = vmlal_s8(vprod1x4567c2, vb4567c2x1, va1x1);
+        vprod2x4567c2 = vmlal_s8(vprod2x4567c2, vb4567c2x1, va2x1);
+        vacc0x4567 = vpadalq_s16(vacc0x4567, vprod0x4567c2);
+        vacc1x4567 = vpadalq_s16(vacc1x4567, vprod1x4567c2);
+        vacc2x4567 = vpadalq_s16(vacc2x4567, vprod2x4567c2);
+        int16x8_t vprod0x89ABc2 = vmull_s8(vb89ABc2x0, va0x0);
+        int16x8_t vprod1x89ABc2 = vmull_s8(vb89ABc2x0, va1x0);
+        int16x8_t vprod2x89ABc2 = vmull_s8(vb89ABc2x0, va2x0);
+        const int8x8_t vb89ABc2x1 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+        vprod0x89ABc2 = vmlal_s8(vprod0x89ABc2, vb89ABc2x1, va0x1);
+        vprod1x89ABc2 = vmlal_s8(vprod1x89ABc2, vb89ABc2x1, va1x1);
+        vprod2x89ABc2 = vmlal_s8(vprod2x89ABc2, vb89ABc2x1, va2x1);
+        vacc0x89AB = vpadalq_s16(vacc0x89AB, vprod0x89ABc2);
+        vacc1x89AB = vpadalq_s16(vacc1x89AB, vprod1x89ABc2);
+        vacc2x89AB = vpadalq_s16(vacc2x89AB, vprod2x89ABc2);
+        int16x8_t vprod0xCDEFc2 = vmull_s8(vbCDEFc2x0, va0x0);
+        int16x8_t vprod1xCDEFc2 = vmull_s8(vbCDEFc2x0, va1x0);
+        int16x8_t vprod2xCDEFc2 = vmull_s8(vbCDEFc2x0, va2x0);
+        const int8x8_t vbCDEFc2x1 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+        vprod0xCDEFc2 = vmlal_s8(vprod0xCDEFc2, vbCDEFc2x1, va0x1);
+        vprod1xCDEFc2 = vmlal_s8(vprod1xCDEFc2, vbCDEFc2x1, va1x1);
+        vprod2xCDEFc2 = vmlal_s8(vprod2xCDEFc2, vbCDEFc2x1, va2x1);
+        vacc0xCDEF = vpadalq_s16(vacc0xCDEF, vprod0xCDEFc2);
+        vacc1xCDEF = vpadalq_s16(vacc1xCDEF, vprod1xCDEFc2);
+        vacc2xCDEF = vpadalq_s16(vacc2xCDEF, vprod2xCDEFc2);
+        va0x0 = vext_s8(va0x0, va0x0, 2);
+        va0x1 = vext_s8(va0x1, va0x1, 2);
+        va1x0 = vext_s8(va1x0, va1x0, 2);
+        va1x1 = vext_s8(va1x1, va1x1, 2);
+        va2x0 = vext_s8(va2x0, va2x0, 2);
+        va2x1 = vext_s8(va2x1, va2x1, 2);
+        int16x8_t vprod0x0123c3 = vmull_s8(vb0123c3x0, va0x0);
+        int16x8_t vprod1x0123c3 = vmull_s8(vb0123c3x0, va1x0);
+        int16x8_t vprod2x0123c3 = vmull_s8(vb0123c3x0, va2x0);
+        const int8x8_t vb0123c3x1 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+        vprod0x0123c3 = vmlal_s8(vprod0x0123c3, vb0123c3x1, va0x1);
+        vprod1x0123c3 = vmlal_s8(vprod1x0123c3, vb0123c3x1, va1x1);
+        vprod2x0123c3 = vmlal_s8(vprod2x0123c3, vb0123c3x1, va2x1);
+        vacc0x0123 = vpadalq_s16(vacc0x0123, vprod0x0123c3);
+        vacc1x0123 = vpadalq_s16(vacc1x0123, vprod1x0123c3);
+        vacc2x0123 = vpadalq_s16(vacc2x0123, vprod2x0123c3);
+        int16x8_t vprod0x4567c3 = vmull_s8(vb4567c3x0, va0x0);
+        int16x8_t vprod1x4567c3 = vmull_s8(vb4567c3x0, va1x0);
+        int16x8_t vprod2x4567c3 = vmull_s8(vb4567c3x0, va2x0);
+        const int8x8_t vb4567c3x1 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+        vprod0x4567c3 = vmlal_s8(vprod0x4567c3, vb4567c3x1, va0x1);
+        vprod1x4567c3 = vmlal_s8(vprod1x4567c3, vb4567c3x1, va1x1);
+        vprod2x4567c3 = vmlal_s8(vprod2x4567c3, vb4567c3x1, va2x1);
+        vacc0x4567 = vpadalq_s16(vacc0x4567, vprod0x4567c3);
+        vacc1x4567 = vpadalq_s16(vacc1x4567, vprod1x4567c3);
+        vacc2x4567 = vpadalq_s16(vacc2x4567, vprod2x4567c3);
+        int16x8_t vprod0x89ABc3 = vmull_s8(vb89ABc3x0, va0x0);
+        int16x8_t vprod1x89ABc3 = vmull_s8(vb89ABc3x0, va1x0);
+        int16x8_t vprod2x89ABc3 = vmull_s8(vb89ABc3x0, va2x0);
+        const int8x8_t vb89ABc3x1 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+        vprod0x89ABc3 = vmlal_s8(vprod0x89ABc3, vb89ABc3x1, va0x1);
+        vprod1x89ABc3 = vmlal_s8(vprod1x89ABc3, vb89ABc3x1, va1x1);
+        vprod2x89ABc3 = vmlal_s8(vprod2x89ABc3, vb89ABc3x1, va2x1);
+        vacc0x89AB = vpadalq_s16(vacc0x89AB, vprod0x89ABc3);
+        vacc1x89AB = vpadalq_s16(vacc1x89AB, vprod1x89ABc3);
+        vacc2x89AB = vpadalq_s16(vacc2x89AB, vprod2x89ABc3);
+        int16x8_t vprod0xCDEFc3 = vmull_s8(vbCDEFc3x0, va0x0);
+        int16x8_t vprod1xCDEFc3 = vmull_s8(vbCDEFc3x0, va1x0);
+        int16x8_t vprod2xCDEFc3 = vmull_s8(vbCDEFc3x0, va2x0);
+        const int8x8_t vbCDEFc3x1 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+        vprod0xCDEFc3 = vmlal_s8(vprod0xCDEFc3, vbCDEFc3x1, va0x1);
+        vprod1xCDEFc3 = vmlal_s8(vprod1xCDEFc3, vbCDEFc3x1, va1x1);
+        vprod2xCDEFc3 = vmlal_s8(vprod2xCDEFc3, vbCDEFc3x1, va2x1);
+        vacc0xCDEF = vpadalq_s16(vacc0xCDEF, vprod0xCDEFc3);
+        vacc1xCDEF = vpadalq_s16(vacc1xCDEF, vprod1xCDEFc3);
+        vacc2xCDEF = vpadalq_s16(vacc2xCDEF, vprod2xCDEFc3);
+
+        k -= 16 * sizeof(int8_t);
+      }
+
+      if (k >= 8 * sizeof(int8_t)) {
+        int8x8_t va0x0 = vld1_s8(a0); a0 += 8;
+        int8x8_t va1x0 = vld1_s8(a1); a1 += 8;
+        int8x8_t va2x0 = vld1_s8(a2); a2 += 8;
+
+        const int8x8_t vb0123c0x0 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+        const int8x8_t vb4567c0x0 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+        const int8x8_t vb89ABc0x0 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+        const int8x8_t vbCDEFc0x0 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+        const int8x8_t vb0123c1x0 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+        const int8x8_t vb4567c1x0 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+        const int8x8_t vb89ABc1x0 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+        const int8x8_t vbCDEFc1x0 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+        const int8x8_t vb0123c2x0 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+        const int8x8_t vb4567c2x0 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+        const int8x8_t vb89ABc2x0 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+        const int8x8_t vbCDEFc2x0 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+        const int8x8_t vb0123c3x0 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+        const int8x8_t vb4567c3x0 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+        const int8x8_t vb89ABc3x0 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+        const int8x8_t vbCDEFc3x0 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+
+        int16x8_t vprod0x0123c0 = vmull_s8(vb0123c0x0, va0x0);
+        int16x8_t vprod1x0123c0 = vmull_s8(vb0123c0x0, va1x0);
+        int16x8_t vprod2x0123c0 = vmull_s8(vb0123c0x0, va2x0);
+        vacc0x0123 = vpadalq_s16(vacc0x0123, vprod0x0123c0);
+        vacc1x0123 = vpadalq_s16(vacc1x0123, vprod1x0123c0);
+        vacc2x0123 = vpadalq_s16(vacc2x0123, vprod2x0123c0);
+        int16x8_t vprod0x4567c0 = vmull_s8(vb4567c0x0, va0x0);
+        int16x8_t vprod1x4567c0 = vmull_s8(vb4567c0x0, va1x0);
+        int16x8_t vprod2x4567c0 = vmull_s8(vb4567c0x0, va2x0);
+        vacc0x4567 = vpadalq_s16(vacc0x4567, vprod0x4567c0);
+        vacc1x4567 = vpadalq_s16(vacc1x4567, vprod1x4567c0);
+        vacc2x4567 = vpadalq_s16(vacc2x4567, vprod2x4567c0);
+        int16x8_t vprod0x89ABc0 = vmull_s8(vb89ABc0x0, va0x0);
+        int16x8_t vprod1x89ABc0 = vmull_s8(vb89ABc0x0, va1x0);
+        int16x8_t vprod2x89ABc0 = vmull_s8(vb89ABc0x0, va2x0);
+        vacc0x89AB = vpadalq_s16(vacc0x89AB, vprod0x89ABc0);
+        vacc1x89AB = vpadalq_s16(vacc1x89AB, vprod1x89ABc0);
+        vacc2x89AB = vpadalq_s16(vacc2x89AB, vprod2x89ABc0);
+        int16x8_t vprod0xCDEFc0 = vmull_s8(vbCDEFc0x0, va0x0);
+        int16x8_t vprod1xCDEFc0 = vmull_s8(vbCDEFc0x0, va1x0);
+        int16x8_t vprod2xCDEFc0 = vmull_s8(vbCDEFc0x0, va2x0);
+        vacc0xCDEF = vpadalq_s16(vacc0xCDEF, vprod0xCDEFc0);
+        vacc1xCDEF = vpadalq_s16(vacc1xCDEF, vprod1xCDEFc0);
+        vacc2xCDEF = vpadalq_s16(vacc2xCDEF, vprod2xCDEFc0);
+        va0x0 = vext_s8(va0x0, va0x0, 2);
+        va1x0 = vext_s8(va1x0, va1x0, 2);
+        va2x0 = vext_s8(va2x0, va2x0, 2);
+        int16x8_t vprod0x0123c1 = vmull_s8(vb0123c1x0, va0x0);
+        int16x8_t vprod1x0123c1 = vmull_s8(vb0123c1x0, va1x0);
+        int16x8_t vprod2x0123c1 = vmull_s8(vb0123c1x0, va2x0);
+        vacc0x0123 = vpadalq_s16(vacc0x0123, vprod0x0123c1);
+        vacc1x0123 = vpadalq_s16(vacc1x0123, vprod1x0123c1);
+        vacc2x0123 = vpadalq_s16(vacc2x0123, vprod2x0123c1);
+        int16x8_t vprod0x4567c1 = vmull_s8(vb4567c1x0, va0x0);
+        int16x8_t vprod1x4567c1 = vmull_s8(vb4567c1x0, va1x0);
+        int16x8_t vprod2x4567c1 = vmull_s8(vb4567c1x0, va2x0);
+        vacc0x4567 = vpadalq_s16(vacc0x4567, vprod0x4567c1);
+        vacc1x4567 = vpadalq_s16(vacc1x4567, vprod1x4567c1);
+        vacc2x4567 = vpadalq_s16(vacc2x4567, vprod2x4567c1);
+        int16x8_t vprod0x89ABc1 = vmull_s8(vb89ABc1x0, va0x0);
+        int16x8_t vprod1x89ABc1 = vmull_s8(vb89ABc1x0, va1x0);
+        int16x8_t vprod2x89ABc1 = vmull_s8(vb89ABc1x0, va2x0);
+        vacc0x89AB = vpadalq_s16(vacc0x89AB, vprod0x89ABc1);
+        vacc1x89AB = vpadalq_s16(vacc1x89AB, vprod1x89ABc1);
+        vacc2x89AB = vpadalq_s16(vacc2x89AB, vprod2x89ABc1);
+        int16x8_t vprod0xCDEFc1 = vmull_s8(vbCDEFc1x0, va0x0);
+        int16x8_t vprod1xCDEFc1 = vmull_s8(vbCDEFc1x0, va1x0);
+        int16x8_t vprod2xCDEFc1 = vmull_s8(vbCDEFc1x0, va2x0);
+        vacc0xCDEF = vpadalq_s16(vacc0xCDEF, vprod0xCDEFc1);
+        vacc1xCDEF = vpadalq_s16(vacc1xCDEF, vprod1xCDEFc1);
+        vacc2xCDEF = vpadalq_s16(vacc2xCDEF, vprod2xCDEFc1);
+        va0x0 = vext_s8(va0x0, va0x0, 2);
+        va1x0 = vext_s8(va1x0, va1x0, 2);
+        va2x0 = vext_s8(va2x0, va2x0, 2);
+        int16x8_t vprod0x0123c2 = vmull_s8(vb0123c2x0, va0x0);
+        int16x8_t vprod1x0123c2 = vmull_s8(vb0123c2x0, va1x0);
+        int16x8_t vprod2x0123c2 = vmull_s8(vb0123c2x0, va2x0);
+        vacc0x0123 = vpadalq_s16(vacc0x0123, vprod0x0123c2);
+        vacc1x0123 = vpadalq_s16(vacc1x0123, vprod1x0123c2);
+        vacc2x0123 = vpadalq_s16(vacc2x0123, vprod2x0123c2);
+        int16x8_t vprod0x4567c2 = vmull_s8(vb4567c2x0, va0x0);
+        int16x8_t vprod1x4567c2 = vmull_s8(vb4567c2x0, va1x0);
+        int16x8_t vprod2x4567c2 = vmull_s8(vb4567c2x0, va2x0);
+        vacc0x4567 = vpadalq_s16(vacc0x4567, vprod0x4567c2);
+        vacc1x4567 = vpadalq_s16(vacc1x4567, vprod1x4567c2);
+        vacc2x4567 = vpadalq_s16(vacc2x4567, vprod2x4567c2);
+        int16x8_t vprod0x89ABc2 = vmull_s8(vb89ABc2x0, va0x0);
+        int16x8_t vprod1x89ABc2 = vmull_s8(vb89ABc2x0, va1x0);
+        int16x8_t vprod2x89ABc2 = vmull_s8(vb89ABc2x0, va2x0);
+        vacc0x89AB = vpadalq_s16(vacc0x89AB, vprod0x89ABc2);
+        vacc1x89AB = vpadalq_s16(vacc1x89AB, vprod1x89ABc2);
+        vacc2x89AB = vpadalq_s16(vacc2x89AB, vprod2x89ABc2);
+        int16x8_t vprod0xCDEFc2 = vmull_s8(vbCDEFc2x0, va0x0);
+        int16x8_t vprod1xCDEFc2 = vmull_s8(vbCDEFc2x0, va1x0);
+        int16x8_t vprod2xCDEFc2 = vmull_s8(vbCDEFc2x0, va2x0);
+        vacc0xCDEF = vpadalq_s16(vacc0xCDEF, vprod0xCDEFc2);
+        vacc1xCDEF = vpadalq_s16(vacc1xCDEF, vprod1xCDEFc2);
+        vacc2xCDEF = vpadalq_s16(vacc2xCDEF, vprod2xCDEFc2);
+        va0x0 = vext_s8(va0x0, va0x0, 2);
+        va1x0 = vext_s8(va1x0, va1x0, 2);
+        va2x0 = vext_s8(va2x0, va2x0, 2);
+        int16x8_t vprod0x0123c3 = vmull_s8(vb0123c3x0, va0x0);
+        int16x8_t vprod1x0123c3 = vmull_s8(vb0123c3x0, va1x0);
+        int16x8_t vprod2x0123c3 = vmull_s8(vb0123c3x0, va2x0);
+        vacc0x0123 = vpadalq_s16(vacc0x0123, vprod0x0123c3);
+        vacc1x0123 = vpadalq_s16(vacc1x0123, vprod1x0123c3);
+        vacc2x0123 = vpadalq_s16(vacc2x0123, vprod2x0123c3);
+        int16x8_t vprod0x4567c3 = vmull_s8(vb4567c3x0, va0x0);
+        int16x8_t vprod1x4567c3 = vmull_s8(vb4567c3x0, va1x0);
+        int16x8_t vprod2x4567c3 = vmull_s8(vb4567c3x0, va2x0);
+        vacc0x4567 = vpadalq_s16(vacc0x4567, vprod0x4567c3);
+        vacc1x4567 = vpadalq_s16(vacc1x4567, vprod1x4567c3);
+        vacc2x4567 = vpadalq_s16(vacc2x4567, vprod2x4567c3);
+        int16x8_t vprod0x89ABc3 = vmull_s8(vb89ABc3x0, va0x0);
+        int16x8_t vprod1x89ABc3 = vmull_s8(vb89ABc3x0, va1x0);
+        int16x8_t vprod2x89ABc3 = vmull_s8(vb89ABc3x0, va2x0);
+        vacc0x89AB = vpadalq_s16(vacc0x89AB, vprod0x89ABc3);
+        vacc1x89AB = vpadalq_s16(vacc1x89AB, vprod1x89ABc3);
+        vacc2x89AB = vpadalq_s16(vacc2x89AB, vprod2x89ABc3);
+        int16x8_t vprod0xCDEFc3 = vmull_s8(vbCDEFc3x0, va0x0);
+        int16x8_t vprod1xCDEFc3 = vmull_s8(vbCDEFc3x0, va1x0);
+        int16x8_t vprod2xCDEFc3 = vmull_s8(vbCDEFc3x0, va2x0);
+        vacc0xCDEF = vpadalq_s16(vacc0xCDEF, vprod0xCDEFc3);
+        vacc1xCDEF = vpadalq_s16(vacc1xCDEF, vprod1xCDEFc3);
+        vacc2xCDEF = vpadalq_s16(vacc2xCDEF, vprod2xCDEFc3);
+
+        k -= 8 * sizeof(int8_t);
+      }
+
+      if XNN_UNLIKELY(k != 0) {
+        const int8x8_t va0 = vld1_s8(a0); a0 = (const int8_t*) ((uintptr_t) a0 + k);
+        const int8x8_t va1 = vld1_s8(a1); a1 = (const int8_t*) ((uintptr_t) a1 + k);
+        const int8x8_t va2 = vld1_s8(a2); a2 = (const int8_t*) ((uintptr_t) a2 + k);
+
+        const int8x8_t vb0123c0 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+        const int8x8_t vb4567c0 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+        const int8x8_t vb89ABc0 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+        const int8x8_t vbCDEFc0 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+
+        const int16x8_t vprod0x0123c0 = vmull_s8(vb0123c0, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va0), 0)));
+        vacc0x0123 = vpadalq_s16(vacc0x0123, vprod0x0123c0);
+        const int16x8_t vprod0x4567c0 = vmull_s8(vb4567c0, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va0), 0)));
+        vacc0x4567 = vpadalq_s16(vacc0x4567, vprod0x4567c0);
+        const int16x8_t vprod0x89ABc0 = vmull_s8(vb89ABc0, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va0), 0)));
+        vacc0x89AB = vpadalq_s16(vacc0x89AB, vprod0x89ABc0);
+        const int16x8_t vprod0xCDEFc0 = vmull_s8(vbCDEFc0, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va0), 0)));
+        vacc0xCDEF = vpadalq_s16(vacc0xCDEF, vprod0xCDEFc0);
+        const int16x8_t vprod1x0123c0 = vmull_s8(vb0123c0, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va1), 0)));
+        vacc1x0123 = vpadalq_s16(vacc1x0123, vprod1x0123c0);
+        const int16x8_t vprod1x4567c0 = vmull_s8(vb4567c0, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va1), 0)));
+        vacc1x4567 = vpadalq_s16(vacc1x4567, vprod1x4567c0);
+        const int16x8_t vprod1x89ABc0 = vmull_s8(vb89ABc0, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va1), 0)));
+        vacc1x89AB = vpadalq_s16(vacc1x89AB, vprod1x89ABc0);
+        const int16x8_t vprod1xCDEFc0 = vmull_s8(vbCDEFc0, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va1), 0)));
+        vacc1xCDEF = vpadalq_s16(vacc1xCDEF, vprod1xCDEFc0);
+        const int16x8_t vprod2x0123c0 = vmull_s8(vb0123c0, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va2), 0)));
+        vacc2x0123 = vpadalq_s16(vacc2x0123, vprod2x0123c0);
+        const int16x8_t vprod2x4567c0 = vmull_s8(vb4567c0, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va2), 0)));
+        vacc2x4567 = vpadalq_s16(vacc2x4567, vprod2x4567c0);
+        const int16x8_t vprod2x89ABc0 = vmull_s8(vb89ABc0, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va2), 0)));
+        vacc2x89AB = vpadalq_s16(vacc2x89AB, vprod2x89ABc0);
+        const int16x8_t vprod2xCDEFc0 = vmull_s8(vbCDEFc0, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va2), 0)));
+        vacc2xCDEF = vpadalq_s16(vacc2xCDEF, vprod2xCDEFc0);
+
+        if (k > 2 * sizeof(int8_t)) {
+          const int8x8_t vb0123c1 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+          const int8x8_t vb4567c1 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+          const int8x8_t vb89ABc1 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+          const int8x8_t vbCDEFc1 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+
+          const int16x8_t vprod0x0123c1 = vmull_s8(vb0123c1, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va0), 1)));
+          vacc0x0123 = vpadalq_s16(vacc0x0123, vprod0x0123c1);
+          const int16x8_t vprod0x4567c1 = vmull_s8(vb4567c1, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va0), 1)));
+          vacc0x4567 = vpadalq_s16(vacc0x4567, vprod0x4567c1);
+          const int16x8_t vprod0x89ABc1 = vmull_s8(vb89ABc1, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va0), 1)));
+          vacc0x89AB = vpadalq_s16(vacc0x89AB, vprod0x89ABc1);
+          const int16x8_t vprod0xCDEFc1 = vmull_s8(vbCDEFc1, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va0), 1)));
+          vacc0xCDEF = vpadalq_s16(vacc0xCDEF, vprod0xCDEFc1);
+          const int16x8_t vprod1x0123c1 = vmull_s8(vb0123c1, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va1), 1)));
+          vacc1x0123 = vpadalq_s16(vacc1x0123, vprod1x0123c1);
+          const int16x8_t vprod1x4567c1 = vmull_s8(vb4567c1, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va1), 1)));
+          vacc1x4567 = vpadalq_s16(vacc1x4567, vprod1x4567c1);
+          const int16x8_t vprod1x89ABc1 = vmull_s8(vb89ABc1, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va1), 1)));
+          vacc1x89AB = vpadalq_s16(vacc1x89AB, vprod1x89ABc1);
+          const int16x8_t vprod1xCDEFc1 = vmull_s8(vbCDEFc1, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va1), 1)));
+          vacc1xCDEF = vpadalq_s16(vacc1xCDEF, vprod1xCDEFc1);
+          const int16x8_t vprod2x0123c1 = vmull_s8(vb0123c1, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va2), 1)));
+          vacc2x0123 = vpadalq_s16(vacc2x0123, vprod2x0123c1);
+          const int16x8_t vprod2x4567c1 = vmull_s8(vb4567c1, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va2), 1)));
+          vacc2x4567 = vpadalq_s16(vacc2x4567, vprod2x4567c1);
+          const int16x8_t vprod2x89ABc1 = vmull_s8(vb89ABc1, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va2), 1)));
+          vacc2x89AB = vpadalq_s16(vacc2x89AB, vprod2x89ABc1);
+          const int16x8_t vprod2xCDEFc1 = vmull_s8(vbCDEFc1, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va2), 1)));
+          vacc2xCDEF = vpadalq_s16(vacc2xCDEF, vprod2xCDEFc1);
+
+          if (k > 4 * sizeof(int8_t)) {
+            const int8x8_t vb0123c2 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+            const int8x8_t vb4567c2 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+            const int8x8_t vb89ABc2 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+            const int8x8_t vbCDEFc2 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+
+            const int16x8_t vprod0x0123c2 = vmull_s8(vb0123c2, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va0), 2)));
+            vacc0x0123 = vpadalq_s16(vacc0x0123, vprod0x0123c2);
+            const int16x8_t vprod0x4567c2 = vmull_s8(vb4567c2, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va0), 2)));
+            vacc0x4567 = vpadalq_s16(vacc0x4567, vprod0x4567c2);
+            const int16x8_t vprod0x89ABc2 = vmull_s8(vb89ABc2, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va0), 2)));
+            vacc0x89AB = vpadalq_s16(vacc0x89AB, vprod0x89ABc2);
+            const int16x8_t vprod0xCDEFc2 = vmull_s8(vbCDEFc2, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va0), 2)));
+            vacc0xCDEF = vpadalq_s16(vacc0xCDEF, vprod0xCDEFc2);
+            const int16x8_t vprod1x0123c2 = vmull_s8(vb0123c2, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va1), 2)));
+            vacc1x0123 = vpadalq_s16(vacc1x0123, vprod1x0123c2);
+            const int16x8_t vprod1x4567c2 = vmull_s8(vb4567c2, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va1), 2)));
+            vacc1x4567 = vpadalq_s16(vacc1x4567, vprod1x4567c2);
+            const int16x8_t vprod1x89ABc2 = vmull_s8(vb89ABc2, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va1), 2)));
+            vacc1x89AB = vpadalq_s16(vacc1x89AB, vprod1x89ABc2);
+            const int16x8_t vprod1xCDEFc2 = vmull_s8(vbCDEFc2, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va1), 2)));
+            vacc1xCDEF = vpadalq_s16(vacc1xCDEF, vprod1xCDEFc2);
+            const int16x8_t vprod2x0123c2 = vmull_s8(vb0123c2, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va2), 2)));
+            vacc2x0123 = vpadalq_s16(vacc2x0123, vprod2x0123c2);
+            const int16x8_t vprod2x4567c2 = vmull_s8(vb4567c2, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va2), 2)));
+            vacc2x4567 = vpadalq_s16(vacc2x4567, vprod2x4567c2);
+            const int16x8_t vprod2x89ABc2 = vmull_s8(vb89ABc2, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va2), 2)));
+            vacc2x89AB = vpadalq_s16(vacc2x89AB, vprod2x89ABc2);
+            const int16x8_t vprod2xCDEFc2 = vmull_s8(vbCDEFc2, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va2), 2)));
+            vacc2xCDEF = vpadalq_s16(vacc2xCDEF, vprod2xCDEFc2);
+
+            if (k > 6 * sizeof(int8_t)) {
+              const int8x8_t vb0123c2 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+              const int8x8_t vb4567c2 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+              const int8x8_t vb89ABc2 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+              const int8x8_t vbCDEFc2 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+
+              const int16x8_t vprod0x0123c2 = vmull_s8(vb0123c2, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va0), 3)));
+              vacc0x0123 = vpadalq_s16(vacc0x0123, vprod0x0123c2);
+              const int16x8_t vprod0x4567c2 = vmull_s8(vb4567c2, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va0), 3)));
+              vacc0x4567 = vpadalq_s16(vacc0x4567, vprod0x4567c2);
+              const int16x8_t vprod0x89ABc2 = vmull_s8(vb89ABc2, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va0), 3)));
+              vacc0x89AB = vpadalq_s16(vacc0x89AB, vprod0x89ABc2);
+              const int16x8_t vprod0xCDEFc2 = vmull_s8(vbCDEFc2, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va0), 3)));
+              vacc0xCDEF = vpadalq_s16(vacc0xCDEF, vprod0xCDEFc2);
+              const int16x8_t vprod1x0123c2 = vmull_s8(vb0123c2, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va1), 3)));
+              vacc1x0123 = vpadalq_s16(vacc1x0123, vprod1x0123c2);
+              const int16x8_t vprod1x4567c2 = vmull_s8(vb4567c2, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va1), 3)));
+              vacc1x4567 = vpadalq_s16(vacc1x4567, vprod1x4567c2);
+              const int16x8_t vprod1x89ABc2 = vmull_s8(vb89ABc2, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va1), 3)));
+              vacc1x89AB = vpadalq_s16(vacc1x89AB, vprod1x89ABc2);
+              const int16x8_t vprod1xCDEFc2 = vmull_s8(vbCDEFc2, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va1), 3)));
+              vacc1xCDEF = vpadalq_s16(vacc1xCDEF, vprod1xCDEFc2);
+              const int16x8_t vprod2x0123c2 = vmull_s8(vb0123c2, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va2), 3)));
+              vacc2x0123 = vpadalq_s16(vacc2x0123, vprod2x0123c2);
+              const int16x8_t vprod2x4567c2 = vmull_s8(vb4567c2, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va2), 3)));
+              vacc2x4567 = vpadalq_s16(vacc2x4567, vprod2x4567c2);
+              const int16x8_t vprod2x89ABc2 = vmull_s8(vb89ABc2, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va2), 3)));
+              vacc2x89AB = vpadalq_s16(vacc2x89AB, vprod2x89ABc2);
+              const int16x8_t vprod2xCDEFc2 = vmull_s8(vbCDEFc2, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va2), 3)));
+              vacc2xCDEF = vpadalq_s16(vacc2xCDEF, vprod2xCDEFc2);
+            }
+          }
+        }
+      }
+      p -= 3 * sizeof(void*);
+    } while (p != 0);
+
+    const int32x4_t vright_pre_shift = vld1q_dup_s32(&params->rndnu_neon.right_pre_shift);
+    const int32x4_t vmultiplier = vld1q_dup_s32(&params->rndnu_neon.multiplier);
+    const int32x4_t vright_post_shift = vld1q_dup_s32(&params->rndnu_neon.right_post_shift);
+
+    vacc0x0123 = vshlq_s32(vacc0x0123, vright_pre_shift);
+    vacc0x4567 = vshlq_s32(vacc0x4567, vright_pre_shift);
+    vacc0x89AB = vshlq_s32(vacc0x89AB, vright_pre_shift);
+    vacc0xCDEF = vshlq_s32(vacc0xCDEF, vright_pre_shift);
+    vacc1x0123 = vshlq_s32(vacc1x0123, vright_pre_shift);
+    vacc1x4567 = vshlq_s32(vacc1x4567, vright_pre_shift);
+    vacc1x89AB = vshlq_s32(vacc1x89AB, vright_pre_shift);
+    vacc1xCDEF = vshlq_s32(vacc1xCDEF, vright_pre_shift);
+    vacc2x0123 = vshlq_s32(vacc2x0123, vright_pre_shift);
+    vacc2x4567 = vshlq_s32(vacc2x4567, vright_pre_shift);
+    vacc2x89AB = vshlq_s32(vacc2x89AB, vright_pre_shift);
+    vacc2xCDEF = vshlq_s32(vacc2xCDEF, vright_pre_shift);
+
+    vacc0x0123 = vqdmulhq_s32(vacc0x0123, vmultiplier);
+    vacc0x4567 = vqdmulhq_s32(vacc0x4567, vmultiplier);
+    vacc0x89AB = vqdmulhq_s32(vacc0x89AB, vmultiplier);
+    vacc0xCDEF = vqdmulhq_s32(vacc0xCDEF, vmultiplier);
+    vacc1x0123 = vqdmulhq_s32(vacc1x0123, vmultiplier);
+    vacc1x4567 = vqdmulhq_s32(vacc1x4567, vmultiplier);
+    vacc1x89AB = vqdmulhq_s32(vacc1x89AB, vmultiplier);
+    vacc1xCDEF = vqdmulhq_s32(vacc1xCDEF, vmultiplier);
+    vacc2x0123 = vqdmulhq_s32(vacc2x0123, vmultiplier);
+    vacc2x4567 = vqdmulhq_s32(vacc2x4567, vmultiplier);
+    vacc2x89AB = vqdmulhq_s32(vacc2x89AB, vmultiplier);
+    vacc2xCDEF = vqdmulhq_s32(vacc2xCDEF, vmultiplier);
+
+    vacc0x0123 = vrshlq_s32(vacc0x0123, vright_post_shift);
+    vacc0x4567 = vrshlq_s32(vacc0x4567, vright_post_shift);
+    vacc0x89AB = vrshlq_s32(vacc0x89AB, vright_post_shift);
+    vacc0xCDEF = vrshlq_s32(vacc0xCDEF, vright_post_shift);
+    vacc1x0123 = vrshlq_s32(vacc1x0123, vright_post_shift);
+    vacc1x4567 = vrshlq_s32(vacc1x4567, vright_post_shift);
+    vacc1x89AB = vrshlq_s32(vacc1x89AB, vright_post_shift);
+    vacc1xCDEF = vrshlq_s32(vacc1xCDEF, vright_post_shift);
+    vacc2x0123 = vrshlq_s32(vacc2x0123, vright_post_shift);
+    vacc2x4567 = vrshlq_s32(vacc2x4567, vright_post_shift);
+    vacc2x89AB = vrshlq_s32(vacc2x89AB, vright_post_shift);
+    vacc2xCDEF = vrshlq_s32(vacc2xCDEF, vright_post_shift);
+
+    const int16x8_t voutput_zero_point = vld1q_dup_s16(&params->rndnu_neon.output_zero_point);
+#if XNN_ARCH_ARM64
+    const int16x8_t vacc0x01234567 = vqaddq_s16(vqmovn_high_s32(vqmovn_s32(vacc0x0123), vacc0x4567), voutput_zero_point);
+    const int16x8_t vacc0x89ABCDEF = vqaddq_s16(vqmovn_high_s32(vqmovn_s32(vacc0x89AB), vacc0xCDEF), voutput_zero_point);
+    const int16x8_t vacc1x01234567 = vqaddq_s16(vqmovn_high_s32(vqmovn_s32(vacc1x0123), vacc1x4567), voutput_zero_point);
+    const int16x8_t vacc1x89ABCDEF = vqaddq_s16(vqmovn_high_s32(vqmovn_s32(vacc1x89AB), vacc1xCDEF), voutput_zero_point);
+    const int16x8_t vacc2x01234567 = vqaddq_s16(vqmovn_high_s32(vqmovn_s32(vacc2x0123), vacc2x4567), voutput_zero_point);
+    const int16x8_t vacc2x89ABCDEF = vqaddq_s16(vqmovn_high_s32(vqmovn_s32(vacc2x89AB), vacc2xCDEF), voutput_zero_point);
+
+    int8x16_t vout0x0123456789ABCDEF = vqmovn_high_s16(vqmovn_s16(vacc0x01234567), vacc0x89ABCDEF);
+    int8x16_t vout1x0123456789ABCDEF = vqmovn_high_s16(vqmovn_s16(vacc1x01234567), vacc1x89ABCDEF);
+    int8x16_t vout2x0123456789ABCDEF = vqmovn_high_s16(vqmovn_s16(vacc2x01234567), vacc2x89ABCDEF);
+#else
+    const int16x8_t vacc0x01234567 = vqaddq_s16(vcombine_s16(vqmovn_s32(vacc0x0123), vqmovn_s32(vacc0x4567)), voutput_zero_point);
+    const int16x8_t vacc0x89ABCDEF = vqaddq_s16(vcombine_s16(vqmovn_s32(vacc0x89AB), vqmovn_s32(vacc0xCDEF)), voutput_zero_point);
+    const int16x8_t vacc1x01234567 = vqaddq_s16(vcombine_s16(vqmovn_s32(vacc1x0123), vqmovn_s32(vacc1x4567)), voutput_zero_point);
+    const int16x8_t vacc1x89ABCDEF = vqaddq_s16(vcombine_s16(vqmovn_s32(vacc1x89AB), vqmovn_s32(vacc1xCDEF)), voutput_zero_point);
+    const int16x8_t vacc2x01234567 = vqaddq_s16(vcombine_s16(vqmovn_s32(vacc2x0123), vqmovn_s32(vacc2x4567)), voutput_zero_point);
+    const int16x8_t vacc2x89ABCDEF = vqaddq_s16(vcombine_s16(vqmovn_s32(vacc2x89AB), vqmovn_s32(vacc2xCDEF)), voutput_zero_point);
+
+    int8x16_t vout0x0123456789ABCDEF = vcombine_s8(vqmovn_s16(vacc0x01234567), vqmovn_s16(vacc0x89ABCDEF));
+    int8x16_t vout1x0123456789ABCDEF = vcombine_s8(vqmovn_s16(vacc1x01234567), vqmovn_s16(vacc1x89ABCDEF));
+    int8x16_t vout2x0123456789ABCDEF = vcombine_s8(vqmovn_s16(vacc2x01234567), vqmovn_s16(vacc2x89ABCDEF));
+#endif
+    const int8x16_t voutput_min = vld1q_dup_s8(&params->rndnu_neon.output_min);
+    const int8x16_t voutput_max = vld1q_dup_s8(&params->rndnu_neon.output_max);
+
+    vout2x0123456789ABCDEF = vmaxq_s8(vout2x0123456789ABCDEF, voutput_min);
+    vout1x0123456789ABCDEF = vmaxq_s8(vout1x0123456789ABCDEF, voutput_min);
+    vout0x0123456789ABCDEF = vmaxq_s8(vout0x0123456789ABCDEF, voutput_min);
+
+    vout2x0123456789ABCDEF = vminq_s8(vout2x0123456789ABCDEF, voutput_max);
+    vout1x0123456789ABCDEF = vminq_s8(vout1x0123456789ABCDEF, voutput_max);
+    vout0x0123456789ABCDEF = vminq_s8(vout0x0123456789ABCDEF, voutput_max);
+
+    if (nc >= 16) {
+      vst1q_s8(c2 + 0, vout2x0123456789ABCDEF);
+      vst1q_s8(c1 + 0, vout1x0123456789ABCDEF);
+      vst1q_s8(c0 + 0, vout0x0123456789ABCDEF);
+
+      c2 = (int8_t*) ((uintptr_t) c2 + cn_stride);
+      c1 = (int8_t*) ((uintptr_t) c1 + cn_stride);
+      c0 = (int8_t*) ((uintptr_t) c0 + cn_stride);
+
+      a = (const int8_t**restrict) ((uintptr_t) a - ks);
+
+      nc -= 16;
+    } else {
+      int8x8_t vout2x01234567 = vget_low_s8(vout2x0123456789ABCDEF);
+      int8x16_t vout0x01234567_1x01234567 = vcombine_s8(vget_low_s8(vout0x0123456789ABCDEF), vget_low_s8(vout1x0123456789ABCDEF));
+      if (nc & 8) {
+        vst1_s8(c2, vout2x01234567); c2 += 8;
+        vst1_s8(c1, vget_high_s8(vout0x01234567_1x01234567)); c1 += 8;
+        vst1_s8(c0, vget_low_s8(vout0x01234567_1x01234567)); c0 += 8;
+        vout2x01234567 = vget_high_s8(vout2x0123456789ABCDEF);
+        vout0x01234567_1x01234567 = vcombine_s8(vget_high_s8(vout0x0123456789ABCDEF), vget_high_s8(vout1x0123456789ABCDEF));
+      }
+      if (nc & 4) {
+        vst1_lane_u32(__builtin_assume_aligned(c2, 1), vreinterpret_u32_s8(vout2x01234567), 0); c2 += 4;
+        vst1q_lane_u32(__builtin_assume_aligned(c1, 1), vreinterpretq_u32_s8(vout0x01234567_1x01234567), 2); c1 += 4;
+        vst1q_lane_u32(__builtin_assume_aligned(c0, 1), vreinterpretq_u32_s8(vout0x01234567_1x01234567), 0); c0 += 4;
+        vout2x01234567 = vext_s8(vout2x01234567, vout2x01234567, 4);
+        vout0x01234567_1x01234567 = vextq_s8(vout0x01234567_1x01234567, vout0x01234567_1x01234567, 4);
+      }
+      if (nc & 2) {
+        vst1_lane_u16(__builtin_assume_aligned(c2, 1), vreinterpret_u16_s8(vout2x01234567), 0); c2 += 2;
+        vst1q_lane_u16(__builtin_assume_aligned(c1, 1), vreinterpretq_u16_s8(vout0x01234567_1x01234567), 4); c1 += 2;
+        vst1q_lane_u16(__builtin_assume_aligned(c0, 1), vreinterpretq_u16_s8(vout0x01234567_1x01234567), 0); c0 += 2;
+        vout2x01234567 = vext_s8(vout2x01234567, vout2x01234567, 2);
+        vout0x01234567_1x01234567 = vextq_s8(vout0x01234567_1x01234567, vout0x01234567_1x01234567, 2);
+      }
+      if (nc & 1) {
+        vst1_lane_s8(c2, vout2x01234567, 0);
+        vst1q_lane_s8(c1, vout0x01234567_1x01234567, 8);
+        vst1q_lane_s8(c0, vout0x01234567_1x01234567, 0);
+      }
+
+      nc = 0;
+    }
+  } while (nc != 0);
+}
diff --git a/src/qs8-igemm/gen/3x16c2s4-minmax-rndnu-neon-mull-padal.c b/src/qs8-igemm/gen/3x16c2s4-minmax-rndnu-neon-mull-padal.c
new file mode 100644
index 0000000..20f8045
--- /dev/null
+++ b/src/qs8-igemm/gen/3x16c2s4-minmax-rndnu-neon-mull-padal.c
@@ -0,0 +1,474 @@
+// Auto-generated file. Do not edit!
+//   Template: src/qs8-igemm/c2-neon-mull-padal-shuffle.c.in
+//   Generator: tools/xngen
+//
+// Copyright 2021 Google LLC
+//
+// This source code is licensed under the BSD-style license found in the
+// LICENSE file in the root directory of this source tree.
+
+#include <assert.h>
+
+#include <arm_neon.h>
+
+#include <xnnpack/gemm.h>
+#include <xnnpack/math.h>
+
+
+void xnn_qs8_igemm_minmax_rndnu_ukernel_3x16c2s4__neon_mull_padal(
+    size_t mr,
+    size_t nc,
+    size_t kc,
+    size_t ks,
+    const int8_t** restrict a,
+    const void* restrict w,
+    int8_t* restrict c,
+    size_t cm_stride,
+    size_t cn_stride,
+    size_t a_offset,
+    const int8_t* zero,
+    const union xnn_qs8_conv_minmax_params params[restrict XNN_MIN_ELEMENTS(1)]) XNN_DISABLE_TSAN XNN_DISABLE_MSAN
+{
+  assert(mr != 0);
+  assert(mr <= 3);
+  assert(nc != 0);
+  assert(kc != 0);
+  assert(ks != 0);
+  assert(ks % (3 * sizeof(void*)) == 0);
+  assert(a_offset % sizeof(int8_t) == 0);
+  assert(a != NULL);
+  assert(w != NULL);
+  assert(c != NULL);
+
+  int8_t* c0 = c;
+  int8_t* c1 = (int8_t*) ((uintptr_t) c0 + cm_stride);
+  if XNN_UNPREDICTABLE(mr < 2) {
+    c1 = c0;
+  }
+  int8_t* c2 = (int8_t*) ((uintptr_t) c1 + cm_stride);
+  if XNN_UNPREDICTABLE(mr <= 2) {
+    c2 = c1;
+  }
+
+  do {
+    int32x4_t vacc0x0123 = vld1q_s32(w); w = (const void*) ((uintptr_t) w + 4 * sizeof(int32_t));
+    int32x4_t vacc0x4567 = vld1q_s32(w); w = (const void*) ((uintptr_t) w + 4 * sizeof(int32_t));
+    int32x4_t vacc0x89AB = vld1q_s32(w); w = (const void*) ((uintptr_t) w + 4 * sizeof(int32_t));
+    int32x4_t vacc0xCDEF = vld1q_s32(w); w = (const void*) ((uintptr_t) w + 4 * sizeof(int32_t));
+    int32x4_t vacc1x0123 = vacc0x0123;
+    int32x4_t vacc1x4567 = vacc0x4567;
+    int32x4_t vacc1x89AB = vacc0x89AB;
+    int32x4_t vacc1xCDEF = vacc0xCDEF;
+    int32x4_t vacc2x0123 = vacc0x0123;
+    int32x4_t vacc2x4567 = vacc0x4567;
+    int32x4_t vacc2x89AB = vacc0x89AB;
+    int32x4_t vacc2xCDEF = vacc0xCDEF;
+
+    size_t p = ks;
+    do {
+      const int8_t* restrict a0 = a[0];
+      if XNN_UNPREDICTABLE(a0 != zero) {
+        a0 = (const int8_t*) ((uintptr_t) a0 + a_offset);
+      }
+      const int8_t* restrict a1 = a[1];
+      if XNN_UNPREDICTABLE(a1 != zero) {
+        a1 = (const int8_t*) ((uintptr_t) a1 + a_offset);
+      }
+      const int8_t* restrict a2 = a[2];
+      if XNN_UNPREDICTABLE(a2 != zero) {
+        a2 = (const int8_t*) ((uintptr_t) a2 + a_offset);
+      }
+      a += 3;
+
+      size_t k = kc;
+
+
+      while (k >= 8 * sizeof(int8_t)) {
+        int8x8_t va0x0 = vld1_s8(a0); a0 += 8;
+        int8x8_t va1x0 = vld1_s8(a1); a1 += 8;
+        int8x8_t va2x0 = vld1_s8(a2); a2 += 8;
+
+        const int8x8_t vb0123c0x0 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+        const int8x8_t vb4567c0x0 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+        const int8x8_t vb89ABc0x0 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+        const int8x8_t vbCDEFc0x0 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+        const int8x8_t vb0123c1x0 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+        const int8x8_t vb4567c1x0 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+        const int8x8_t vb89ABc1x0 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+        const int8x8_t vbCDEFc1x0 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+        const int8x8_t vb0123c2x0 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+        const int8x8_t vb4567c2x0 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+        const int8x8_t vb89ABc2x0 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+        const int8x8_t vbCDEFc2x0 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+        const int8x8_t vb0123c3x0 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+        const int8x8_t vb4567c3x0 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+        const int8x8_t vb89ABc3x0 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+        const int8x8_t vbCDEFc3x0 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+
+        int16x8_t vprod0x0123c0 = vmull_s8(vb0123c0x0, va0x0);
+        int16x8_t vprod1x0123c0 = vmull_s8(vb0123c0x0, va1x0);
+        int16x8_t vprod2x0123c0 = vmull_s8(vb0123c0x0, va2x0);
+        vacc0x0123 = vpadalq_s16(vacc0x0123, vprod0x0123c0);
+        vacc1x0123 = vpadalq_s16(vacc1x0123, vprod1x0123c0);
+        vacc2x0123 = vpadalq_s16(vacc2x0123, vprod2x0123c0);
+        int16x8_t vprod0x4567c0 = vmull_s8(vb4567c0x0, va0x0);
+        int16x8_t vprod1x4567c0 = vmull_s8(vb4567c0x0, va1x0);
+        int16x8_t vprod2x4567c0 = vmull_s8(vb4567c0x0, va2x0);
+        vacc0x4567 = vpadalq_s16(vacc0x4567, vprod0x4567c0);
+        vacc1x4567 = vpadalq_s16(vacc1x4567, vprod1x4567c0);
+        vacc2x4567 = vpadalq_s16(vacc2x4567, vprod2x4567c0);
+        int16x8_t vprod0x89ABc0 = vmull_s8(vb89ABc0x0, va0x0);
+        int16x8_t vprod1x89ABc0 = vmull_s8(vb89ABc0x0, va1x0);
+        int16x8_t vprod2x89ABc0 = vmull_s8(vb89ABc0x0, va2x0);
+        vacc0x89AB = vpadalq_s16(vacc0x89AB, vprod0x89ABc0);
+        vacc1x89AB = vpadalq_s16(vacc1x89AB, vprod1x89ABc0);
+        vacc2x89AB = vpadalq_s16(vacc2x89AB, vprod2x89ABc0);
+        int16x8_t vprod0xCDEFc0 = vmull_s8(vbCDEFc0x0, va0x0);
+        int16x8_t vprod1xCDEFc0 = vmull_s8(vbCDEFc0x0, va1x0);
+        int16x8_t vprod2xCDEFc0 = vmull_s8(vbCDEFc0x0, va2x0);
+        vacc0xCDEF = vpadalq_s16(vacc0xCDEF, vprod0xCDEFc0);
+        vacc1xCDEF = vpadalq_s16(vacc1xCDEF, vprod1xCDEFc0);
+        vacc2xCDEF = vpadalq_s16(vacc2xCDEF, vprod2xCDEFc0);
+        va0x0 = vext_s8(va0x0, va0x0, 2);
+        va1x0 = vext_s8(va1x0, va1x0, 2);
+        va2x0 = vext_s8(va2x0, va2x0, 2);
+        int16x8_t vprod0x0123c1 = vmull_s8(vb0123c1x0, va0x0);
+        int16x8_t vprod1x0123c1 = vmull_s8(vb0123c1x0, va1x0);
+        int16x8_t vprod2x0123c1 = vmull_s8(vb0123c1x0, va2x0);
+        vacc0x0123 = vpadalq_s16(vacc0x0123, vprod0x0123c1);
+        vacc1x0123 = vpadalq_s16(vacc1x0123, vprod1x0123c1);
+        vacc2x0123 = vpadalq_s16(vacc2x0123, vprod2x0123c1);
+        int16x8_t vprod0x4567c1 = vmull_s8(vb4567c1x0, va0x0);
+        int16x8_t vprod1x4567c1 = vmull_s8(vb4567c1x0, va1x0);
+        int16x8_t vprod2x4567c1 = vmull_s8(vb4567c1x0, va2x0);
+        vacc0x4567 = vpadalq_s16(vacc0x4567, vprod0x4567c1);
+        vacc1x4567 = vpadalq_s16(vacc1x4567, vprod1x4567c1);
+        vacc2x4567 = vpadalq_s16(vacc2x4567, vprod2x4567c1);
+        int16x8_t vprod0x89ABc1 = vmull_s8(vb89ABc1x0, va0x0);
+        int16x8_t vprod1x89ABc1 = vmull_s8(vb89ABc1x0, va1x0);
+        int16x8_t vprod2x89ABc1 = vmull_s8(vb89ABc1x0, va2x0);
+        vacc0x89AB = vpadalq_s16(vacc0x89AB, vprod0x89ABc1);
+        vacc1x89AB = vpadalq_s16(vacc1x89AB, vprod1x89ABc1);
+        vacc2x89AB = vpadalq_s16(vacc2x89AB, vprod2x89ABc1);
+        int16x8_t vprod0xCDEFc1 = vmull_s8(vbCDEFc1x0, va0x0);
+        int16x8_t vprod1xCDEFc1 = vmull_s8(vbCDEFc1x0, va1x0);
+        int16x8_t vprod2xCDEFc1 = vmull_s8(vbCDEFc1x0, va2x0);
+        vacc0xCDEF = vpadalq_s16(vacc0xCDEF, vprod0xCDEFc1);
+        vacc1xCDEF = vpadalq_s16(vacc1xCDEF, vprod1xCDEFc1);
+        vacc2xCDEF = vpadalq_s16(vacc2xCDEF, vprod2xCDEFc1);
+        va0x0 = vext_s8(va0x0, va0x0, 2);
+        va1x0 = vext_s8(va1x0, va1x0, 2);
+        va2x0 = vext_s8(va2x0, va2x0, 2);
+        int16x8_t vprod0x0123c2 = vmull_s8(vb0123c2x0, va0x0);
+        int16x8_t vprod1x0123c2 = vmull_s8(vb0123c2x0, va1x0);
+        int16x8_t vprod2x0123c2 = vmull_s8(vb0123c2x0, va2x0);
+        vacc0x0123 = vpadalq_s16(vacc0x0123, vprod0x0123c2);
+        vacc1x0123 = vpadalq_s16(vacc1x0123, vprod1x0123c2);
+        vacc2x0123 = vpadalq_s16(vacc2x0123, vprod2x0123c2);
+        int16x8_t vprod0x4567c2 = vmull_s8(vb4567c2x0, va0x0);
+        int16x8_t vprod1x4567c2 = vmull_s8(vb4567c2x0, va1x0);
+        int16x8_t vprod2x4567c2 = vmull_s8(vb4567c2x0, va2x0);
+        vacc0x4567 = vpadalq_s16(vacc0x4567, vprod0x4567c2);
+        vacc1x4567 = vpadalq_s16(vacc1x4567, vprod1x4567c2);
+        vacc2x4567 = vpadalq_s16(vacc2x4567, vprod2x4567c2);
+        int16x8_t vprod0x89ABc2 = vmull_s8(vb89ABc2x0, va0x0);
+        int16x8_t vprod1x89ABc2 = vmull_s8(vb89ABc2x0, va1x0);
+        int16x8_t vprod2x89ABc2 = vmull_s8(vb89ABc2x0, va2x0);
+        vacc0x89AB = vpadalq_s16(vacc0x89AB, vprod0x89ABc2);
+        vacc1x89AB = vpadalq_s16(vacc1x89AB, vprod1x89ABc2);
+        vacc2x89AB = vpadalq_s16(vacc2x89AB, vprod2x89ABc2);
+        int16x8_t vprod0xCDEFc2 = vmull_s8(vbCDEFc2x0, va0x0);
+        int16x8_t vprod1xCDEFc2 = vmull_s8(vbCDEFc2x0, va1x0);
+        int16x8_t vprod2xCDEFc2 = vmull_s8(vbCDEFc2x0, va2x0);
+        vacc0xCDEF = vpadalq_s16(vacc0xCDEF, vprod0xCDEFc2);
+        vacc1xCDEF = vpadalq_s16(vacc1xCDEF, vprod1xCDEFc2);
+        vacc2xCDEF = vpadalq_s16(vacc2xCDEF, vprod2xCDEFc2);
+        va0x0 = vext_s8(va0x0, va0x0, 2);
+        va1x0 = vext_s8(va1x0, va1x0, 2);
+        va2x0 = vext_s8(va2x0, va2x0, 2);
+        int16x8_t vprod0x0123c3 = vmull_s8(vb0123c3x0, va0x0);
+        int16x8_t vprod1x0123c3 = vmull_s8(vb0123c3x0, va1x0);
+        int16x8_t vprod2x0123c3 = vmull_s8(vb0123c3x0, va2x0);
+        vacc0x0123 = vpadalq_s16(vacc0x0123, vprod0x0123c3);
+        vacc1x0123 = vpadalq_s16(vacc1x0123, vprod1x0123c3);
+        vacc2x0123 = vpadalq_s16(vacc2x0123, vprod2x0123c3);
+        int16x8_t vprod0x4567c3 = vmull_s8(vb4567c3x0, va0x0);
+        int16x8_t vprod1x4567c3 = vmull_s8(vb4567c3x0, va1x0);
+        int16x8_t vprod2x4567c3 = vmull_s8(vb4567c3x0, va2x0);
+        vacc0x4567 = vpadalq_s16(vacc0x4567, vprod0x4567c3);
+        vacc1x4567 = vpadalq_s16(vacc1x4567, vprod1x4567c3);
+        vacc2x4567 = vpadalq_s16(vacc2x4567, vprod2x4567c3);
+        int16x8_t vprod0x89ABc3 = vmull_s8(vb89ABc3x0, va0x0);
+        int16x8_t vprod1x89ABc3 = vmull_s8(vb89ABc3x0, va1x0);
+        int16x8_t vprod2x89ABc3 = vmull_s8(vb89ABc3x0, va2x0);
+        vacc0x89AB = vpadalq_s16(vacc0x89AB, vprod0x89ABc3);
+        vacc1x89AB = vpadalq_s16(vacc1x89AB, vprod1x89ABc3);
+        vacc2x89AB = vpadalq_s16(vacc2x89AB, vprod2x89ABc3);
+        int16x8_t vprod0xCDEFc3 = vmull_s8(vbCDEFc3x0, va0x0);
+        int16x8_t vprod1xCDEFc3 = vmull_s8(vbCDEFc3x0, va1x0);
+        int16x8_t vprod2xCDEFc3 = vmull_s8(vbCDEFc3x0, va2x0);
+        vacc0xCDEF = vpadalq_s16(vacc0xCDEF, vprod0xCDEFc3);
+        vacc1xCDEF = vpadalq_s16(vacc1xCDEF, vprod1xCDEFc3);
+        vacc2xCDEF = vpadalq_s16(vacc2xCDEF, vprod2xCDEFc3);
+
+        k -= 8 * sizeof(int8_t);
+      }
+
+      if XNN_UNLIKELY(k != 0) {
+        const int8x8_t va0 = vld1_s8(a0); a0 = (const int8_t*) ((uintptr_t) a0 + k);
+        const int8x8_t va1 = vld1_s8(a1); a1 = (const int8_t*) ((uintptr_t) a1 + k);
+        const int8x8_t va2 = vld1_s8(a2); a2 = (const int8_t*) ((uintptr_t) a2 + k);
+
+        const int8x8_t vb0123c0 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+        const int8x8_t vb4567c0 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+        const int8x8_t vb89ABc0 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+        const int8x8_t vbCDEFc0 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+
+        const int16x8_t vprod0x0123c0 = vmull_s8(vb0123c0, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va0), 0)));
+        vacc0x0123 = vpadalq_s16(vacc0x0123, vprod0x0123c0);
+        const int16x8_t vprod0x4567c0 = vmull_s8(vb4567c0, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va0), 0)));
+        vacc0x4567 = vpadalq_s16(vacc0x4567, vprod0x4567c0);
+        const int16x8_t vprod0x89ABc0 = vmull_s8(vb89ABc0, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va0), 0)));
+        vacc0x89AB = vpadalq_s16(vacc0x89AB, vprod0x89ABc0);
+        const int16x8_t vprod0xCDEFc0 = vmull_s8(vbCDEFc0, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va0), 0)));
+        vacc0xCDEF = vpadalq_s16(vacc0xCDEF, vprod0xCDEFc0);
+        const int16x8_t vprod1x0123c0 = vmull_s8(vb0123c0, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va1), 0)));
+        vacc1x0123 = vpadalq_s16(vacc1x0123, vprod1x0123c0);
+        const int16x8_t vprod1x4567c0 = vmull_s8(vb4567c0, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va1), 0)));
+        vacc1x4567 = vpadalq_s16(vacc1x4567, vprod1x4567c0);
+        const int16x8_t vprod1x89ABc0 = vmull_s8(vb89ABc0, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va1), 0)));
+        vacc1x89AB = vpadalq_s16(vacc1x89AB, vprod1x89ABc0);
+        const int16x8_t vprod1xCDEFc0 = vmull_s8(vbCDEFc0, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va1), 0)));
+        vacc1xCDEF = vpadalq_s16(vacc1xCDEF, vprod1xCDEFc0);
+        const int16x8_t vprod2x0123c0 = vmull_s8(vb0123c0, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va2), 0)));
+        vacc2x0123 = vpadalq_s16(vacc2x0123, vprod2x0123c0);
+        const int16x8_t vprod2x4567c0 = vmull_s8(vb4567c0, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va2), 0)));
+        vacc2x4567 = vpadalq_s16(vacc2x4567, vprod2x4567c0);
+        const int16x8_t vprod2x89ABc0 = vmull_s8(vb89ABc0, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va2), 0)));
+        vacc2x89AB = vpadalq_s16(vacc2x89AB, vprod2x89ABc0);
+        const int16x8_t vprod2xCDEFc0 = vmull_s8(vbCDEFc0, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va2), 0)));
+        vacc2xCDEF = vpadalq_s16(vacc2xCDEF, vprod2xCDEFc0);
+
+        if (k > 2 * sizeof(int8_t)) {
+          const int8x8_t vb0123c1 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+          const int8x8_t vb4567c1 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+          const int8x8_t vb89ABc1 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+          const int8x8_t vbCDEFc1 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+
+          const int16x8_t vprod0x0123c1 = vmull_s8(vb0123c1, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va0), 1)));
+          vacc0x0123 = vpadalq_s16(vacc0x0123, vprod0x0123c1);
+          const int16x8_t vprod0x4567c1 = vmull_s8(vb4567c1, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va0), 1)));
+          vacc0x4567 = vpadalq_s16(vacc0x4567, vprod0x4567c1);
+          const int16x8_t vprod0x89ABc1 = vmull_s8(vb89ABc1, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va0), 1)));
+          vacc0x89AB = vpadalq_s16(vacc0x89AB, vprod0x89ABc1);
+          const int16x8_t vprod0xCDEFc1 = vmull_s8(vbCDEFc1, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va0), 1)));
+          vacc0xCDEF = vpadalq_s16(vacc0xCDEF, vprod0xCDEFc1);
+          const int16x8_t vprod1x0123c1 = vmull_s8(vb0123c1, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va1), 1)));
+          vacc1x0123 = vpadalq_s16(vacc1x0123, vprod1x0123c1);
+          const int16x8_t vprod1x4567c1 = vmull_s8(vb4567c1, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va1), 1)));
+          vacc1x4567 = vpadalq_s16(vacc1x4567, vprod1x4567c1);
+          const int16x8_t vprod1x89ABc1 = vmull_s8(vb89ABc1, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va1), 1)));
+          vacc1x89AB = vpadalq_s16(vacc1x89AB, vprod1x89ABc1);
+          const int16x8_t vprod1xCDEFc1 = vmull_s8(vbCDEFc1, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va1), 1)));
+          vacc1xCDEF = vpadalq_s16(vacc1xCDEF, vprod1xCDEFc1);
+          const int16x8_t vprod2x0123c1 = vmull_s8(vb0123c1, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va2), 1)));
+          vacc2x0123 = vpadalq_s16(vacc2x0123, vprod2x0123c1);
+          const int16x8_t vprod2x4567c1 = vmull_s8(vb4567c1, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va2), 1)));
+          vacc2x4567 = vpadalq_s16(vacc2x4567, vprod2x4567c1);
+          const int16x8_t vprod2x89ABc1 = vmull_s8(vb89ABc1, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va2), 1)));
+          vacc2x89AB = vpadalq_s16(vacc2x89AB, vprod2x89ABc1);
+          const int16x8_t vprod2xCDEFc1 = vmull_s8(vbCDEFc1, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va2), 1)));
+          vacc2xCDEF = vpadalq_s16(vacc2xCDEF, vprod2xCDEFc1);
+
+          if (k > 4 * sizeof(int8_t)) {
+            const int8x8_t vb0123c2 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+            const int8x8_t vb4567c2 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+            const int8x8_t vb89ABc2 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+            const int8x8_t vbCDEFc2 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+
+            const int16x8_t vprod0x0123c2 = vmull_s8(vb0123c2, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va0), 2)));
+            vacc0x0123 = vpadalq_s16(vacc0x0123, vprod0x0123c2);
+            const int16x8_t vprod0x4567c2 = vmull_s8(vb4567c2, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va0), 2)));
+            vacc0x4567 = vpadalq_s16(vacc0x4567, vprod0x4567c2);
+            const int16x8_t vprod0x89ABc2 = vmull_s8(vb89ABc2, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va0), 2)));
+            vacc0x89AB = vpadalq_s16(vacc0x89AB, vprod0x89ABc2);
+            const int16x8_t vprod0xCDEFc2 = vmull_s8(vbCDEFc2, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va0), 2)));
+            vacc0xCDEF = vpadalq_s16(vacc0xCDEF, vprod0xCDEFc2);
+            const int16x8_t vprod1x0123c2 = vmull_s8(vb0123c2, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va1), 2)));
+            vacc1x0123 = vpadalq_s16(vacc1x0123, vprod1x0123c2);
+            const int16x8_t vprod1x4567c2 = vmull_s8(vb4567c2, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va1), 2)));
+            vacc1x4567 = vpadalq_s16(vacc1x4567, vprod1x4567c2);
+            const int16x8_t vprod1x89ABc2 = vmull_s8(vb89ABc2, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va1), 2)));
+            vacc1x89AB = vpadalq_s16(vacc1x89AB, vprod1x89ABc2);
+            const int16x8_t vprod1xCDEFc2 = vmull_s8(vbCDEFc2, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va1), 2)));
+            vacc1xCDEF = vpadalq_s16(vacc1xCDEF, vprod1xCDEFc2);
+            const int16x8_t vprod2x0123c2 = vmull_s8(vb0123c2, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va2), 2)));
+            vacc2x0123 = vpadalq_s16(vacc2x0123, vprod2x0123c2);
+            const int16x8_t vprod2x4567c2 = vmull_s8(vb4567c2, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va2), 2)));
+            vacc2x4567 = vpadalq_s16(vacc2x4567, vprod2x4567c2);
+            const int16x8_t vprod2x89ABc2 = vmull_s8(vb89ABc2, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va2), 2)));
+            vacc2x89AB = vpadalq_s16(vacc2x89AB, vprod2x89ABc2);
+            const int16x8_t vprod2xCDEFc2 = vmull_s8(vbCDEFc2, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va2), 2)));
+            vacc2xCDEF = vpadalq_s16(vacc2xCDEF, vprod2xCDEFc2);
+
+            if (k > 6 * sizeof(int8_t)) {
+              const int8x8_t vb0123c2 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+              const int8x8_t vb4567c2 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+              const int8x8_t vb89ABc2 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+              const int8x8_t vbCDEFc2 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+
+              const int16x8_t vprod0x0123c2 = vmull_s8(vb0123c2, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va0), 3)));
+              vacc0x0123 = vpadalq_s16(vacc0x0123, vprod0x0123c2);
+              const int16x8_t vprod0x4567c2 = vmull_s8(vb4567c2, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va0), 3)));
+              vacc0x4567 = vpadalq_s16(vacc0x4567, vprod0x4567c2);
+              const int16x8_t vprod0x89ABc2 = vmull_s8(vb89ABc2, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va0), 3)));
+              vacc0x89AB = vpadalq_s16(vacc0x89AB, vprod0x89ABc2);
+              const int16x8_t vprod0xCDEFc2 = vmull_s8(vbCDEFc2, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va0), 3)));
+              vacc0xCDEF = vpadalq_s16(vacc0xCDEF, vprod0xCDEFc2);
+              const int16x8_t vprod1x0123c2 = vmull_s8(vb0123c2, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va1), 3)));
+              vacc1x0123 = vpadalq_s16(vacc1x0123, vprod1x0123c2);
+              const int16x8_t vprod1x4567c2 = vmull_s8(vb4567c2, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va1), 3)));
+              vacc1x4567 = vpadalq_s16(vacc1x4567, vprod1x4567c2);
+              const int16x8_t vprod1x89ABc2 = vmull_s8(vb89ABc2, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va1), 3)));
+              vacc1x89AB = vpadalq_s16(vacc1x89AB, vprod1x89ABc2);
+              const int16x8_t vprod1xCDEFc2 = vmull_s8(vbCDEFc2, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va1), 3)));
+              vacc1xCDEF = vpadalq_s16(vacc1xCDEF, vprod1xCDEFc2);
+              const int16x8_t vprod2x0123c2 = vmull_s8(vb0123c2, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va2), 3)));
+              vacc2x0123 = vpadalq_s16(vacc2x0123, vprod2x0123c2);
+              const int16x8_t vprod2x4567c2 = vmull_s8(vb4567c2, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va2), 3)));
+              vacc2x4567 = vpadalq_s16(vacc2x4567, vprod2x4567c2);
+              const int16x8_t vprod2x89ABc2 = vmull_s8(vb89ABc2, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va2), 3)));
+              vacc2x89AB = vpadalq_s16(vacc2x89AB, vprod2x89ABc2);
+              const int16x8_t vprod2xCDEFc2 = vmull_s8(vbCDEFc2, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va2), 3)));
+              vacc2xCDEF = vpadalq_s16(vacc2xCDEF, vprod2xCDEFc2);
+            }
+          }
+        }
+      }
+      p -= 3 * sizeof(void*);
+    } while (p != 0);
+
+    const int32x4_t vright_pre_shift = vld1q_dup_s32(&params->rndnu_neon.right_pre_shift);
+    const int32x4_t vmultiplier = vld1q_dup_s32(&params->rndnu_neon.multiplier);
+    const int32x4_t vright_post_shift = vld1q_dup_s32(&params->rndnu_neon.right_post_shift);
+
+    vacc0x0123 = vshlq_s32(vacc0x0123, vright_pre_shift);
+    vacc0x4567 = vshlq_s32(vacc0x4567, vright_pre_shift);
+    vacc0x89AB = vshlq_s32(vacc0x89AB, vright_pre_shift);
+    vacc0xCDEF = vshlq_s32(vacc0xCDEF, vright_pre_shift);
+    vacc1x0123 = vshlq_s32(vacc1x0123, vright_pre_shift);
+    vacc1x4567 = vshlq_s32(vacc1x4567, vright_pre_shift);
+    vacc1x89AB = vshlq_s32(vacc1x89AB, vright_pre_shift);
+    vacc1xCDEF = vshlq_s32(vacc1xCDEF, vright_pre_shift);
+    vacc2x0123 = vshlq_s32(vacc2x0123, vright_pre_shift);
+    vacc2x4567 = vshlq_s32(vacc2x4567, vright_pre_shift);
+    vacc2x89AB = vshlq_s32(vacc2x89AB, vright_pre_shift);
+    vacc2xCDEF = vshlq_s32(vacc2xCDEF, vright_pre_shift);
+
+    vacc0x0123 = vqdmulhq_s32(vacc0x0123, vmultiplier);
+    vacc0x4567 = vqdmulhq_s32(vacc0x4567, vmultiplier);
+    vacc0x89AB = vqdmulhq_s32(vacc0x89AB, vmultiplier);
+    vacc0xCDEF = vqdmulhq_s32(vacc0xCDEF, vmultiplier);
+    vacc1x0123 = vqdmulhq_s32(vacc1x0123, vmultiplier);
+    vacc1x4567 = vqdmulhq_s32(vacc1x4567, vmultiplier);
+    vacc1x89AB = vqdmulhq_s32(vacc1x89AB, vmultiplier);
+    vacc1xCDEF = vqdmulhq_s32(vacc1xCDEF, vmultiplier);
+    vacc2x0123 = vqdmulhq_s32(vacc2x0123, vmultiplier);
+    vacc2x4567 = vqdmulhq_s32(vacc2x4567, vmultiplier);
+    vacc2x89AB = vqdmulhq_s32(vacc2x89AB, vmultiplier);
+    vacc2xCDEF = vqdmulhq_s32(vacc2xCDEF, vmultiplier);
+
+    vacc0x0123 = vrshlq_s32(vacc0x0123, vright_post_shift);
+    vacc0x4567 = vrshlq_s32(vacc0x4567, vright_post_shift);
+    vacc0x89AB = vrshlq_s32(vacc0x89AB, vright_post_shift);
+    vacc0xCDEF = vrshlq_s32(vacc0xCDEF, vright_post_shift);
+    vacc1x0123 = vrshlq_s32(vacc1x0123, vright_post_shift);
+    vacc1x4567 = vrshlq_s32(vacc1x4567, vright_post_shift);
+    vacc1x89AB = vrshlq_s32(vacc1x89AB, vright_post_shift);
+    vacc1xCDEF = vrshlq_s32(vacc1xCDEF, vright_post_shift);
+    vacc2x0123 = vrshlq_s32(vacc2x0123, vright_post_shift);
+    vacc2x4567 = vrshlq_s32(vacc2x4567, vright_post_shift);
+    vacc2x89AB = vrshlq_s32(vacc2x89AB, vright_post_shift);
+    vacc2xCDEF = vrshlq_s32(vacc2xCDEF, vright_post_shift);
+
+    const int16x8_t voutput_zero_point = vld1q_dup_s16(&params->rndnu_neon.output_zero_point);
+#if XNN_ARCH_ARM64
+    const int16x8_t vacc0x01234567 = vqaddq_s16(vqmovn_high_s32(vqmovn_s32(vacc0x0123), vacc0x4567), voutput_zero_point);
+    const int16x8_t vacc0x89ABCDEF = vqaddq_s16(vqmovn_high_s32(vqmovn_s32(vacc0x89AB), vacc0xCDEF), voutput_zero_point);
+    const int16x8_t vacc1x01234567 = vqaddq_s16(vqmovn_high_s32(vqmovn_s32(vacc1x0123), vacc1x4567), voutput_zero_point);
+    const int16x8_t vacc1x89ABCDEF = vqaddq_s16(vqmovn_high_s32(vqmovn_s32(vacc1x89AB), vacc1xCDEF), voutput_zero_point);
+    const int16x8_t vacc2x01234567 = vqaddq_s16(vqmovn_high_s32(vqmovn_s32(vacc2x0123), vacc2x4567), voutput_zero_point);
+    const int16x8_t vacc2x89ABCDEF = vqaddq_s16(vqmovn_high_s32(vqmovn_s32(vacc2x89AB), vacc2xCDEF), voutput_zero_point);
+
+    int8x16_t vout0x0123456789ABCDEF = vqmovn_high_s16(vqmovn_s16(vacc0x01234567), vacc0x89ABCDEF);
+    int8x16_t vout1x0123456789ABCDEF = vqmovn_high_s16(vqmovn_s16(vacc1x01234567), vacc1x89ABCDEF);
+    int8x16_t vout2x0123456789ABCDEF = vqmovn_high_s16(vqmovn_s16(vacc2x01234567), vacc2x89ABCDEF);
+#else
+    const int16x8_t vacc0x01234567 = vqaddq_s16(vcombine_s16(vqmovn_s32(vacc0x0123), vqmovn_s32(vacc0x4567)), voutput_zero_point);
+    const int16x8_t vacc0x89ABCDEF = vqaddq_s16(vcombine_s16(vqmovn_s32(vacc0x89AB), vqmovn_s32(vacc0xCDEF)), voutput_zero_point);
+    const int16x8_t vacc1x01234567 = vqaddq_s16(vcombine_s16(vqmovn_s32(vacc1x0123), vqmovn_s32(vacc1x4567)), voutput_zero_point);
+    const int16x8_t vacc1x89ABCDEF = vqaddq_s16(vcombine_s16(vqmovn_s32(vacc1x89AB), vqmovn_s32(vacc1xCDEF)), voutput_zero_point);
+    const int16x8_t vacc2x01234567 = vqaddq_s16(vcombine_s16(vqmovn_s32(vacc2x0123), vqmovn_s32(vacc2x4567)), voutput_zero_point);
+    const int16x8_t vacc2x89ABCDEF = vqaddq_s16(vcombine_s16(vqmovn_s32(vacc2x89AB), vqmovn_s32(vacc2xCDEF)), voutput_zero_point);
+
+    int8x16_t vout0x0123456789ABCDEF = vcombine_s8(vqmovn_s16(vacc0x01234567), vqmovn_s16(vacc0x89ABCDEF));
+    int8x16_t vout1x0123456789ABCDEF = vcombine_s8(vqmovn_s16(vacc1x01234567), vqmovn_s16(vacc1x89ABCDEF));
+    int8x16_t vout2x0123456789ABCDEF = vcombine_s8(vqmovn_s16(vacc2x01234567), vqmovn_s16(vacc2x89ABCDEF));
+#endif
+    const int8x16_t voutput_min = vld1q_dup_s8(&params->rndnu_neon.output_min);
+    const int8x16_t voutput_max = vld1q_dup_s8(&params->rndnu_neon.output_max);
+
+    vout2x0123456789ABCDEF = vmaxq_s8(vout2x0123456789ABCDEF, voutput_min);
+    vout1x0123456789ABCDEF = vmaxq_s8(vout1x0123456789ABCDEF, voutput_min);
+    vout0x0123456789ABCDEF = vmaxq_s8(vout0x0123456789ABCDEF, voutput_min);
+
+    vout2x0123456789ABCDEF = vminq_s8(vout2x0123456789ABCDEF, voutput_max);
+    vout1x0123456789ABCDEF = vminq_s8(vout1x0123456789ABCDEF, voutput_max);
+    vout0x0123456789ABCDEF = vminq_s8(vout0x0123456789ABCDEF, voutput_max);
+
+    if (nc >= 16) {
+      vst1q_s8(c2 + 0, vout2x0123456789ABCDEF);
+      vst1q_s8(c1 + 0, vout1x0123456789ABCDEF);
+      vst1q_s8(c0 + 0, vout0x0123456789ABCDEF);
+
+      c2 = (int8_t*) ((uintptr_t) c2 + cn_stride);
+      c1 = (int8_t*) ((uintptr_t) c1 + cn_stride);
+      c0 = (int8_t*) ((uintptr_t) c0 + cn_stride);
+
+      a = (const int8_t**restrict) ((uintptr_t) a - ks);
+
+      nc -= 16;
+    } else {
+      int8x8_t vout2x01234567 = vget_low_s8(vout2x0123456789ABCDEF);
+      int8x16_t vout0x01234567_1x01234567 = vcombine_s8(vget_low_s8(vout0x0123456789ABCDEF), vget_low_s8(vout1x0123456789ABCDEF));
+      if (nc & 8) {
+        vst1_s8(c2, vout2x01234567); c2 += 8;
+        vst1_s8(c1, vget_high_s8(vout0x01234567_1x01234567)); c1 += 8;
+        vst1_s8(c0, vget_low_s8(vout0x01234567_1x01234567)); c0 += 8;
+        vout2x01234567 = vget_high_s8(vout2x0123456789ABCDEF);
+        vout0x01234567_1x01234567 = vcombine_s8(vget_high_s8(vout0x0123456789ABCDEF), vget_high_s8(vout1x0123456789ABCDEF));
+      }
+      if (nc & 4) {
+        vst1_lane_u32(__builtin_assume_aligned(c2, 1), vreinterpret_u32_s8(vout2x01234567), 0); c2 += 4;
+        vst1q_lane_u32(__builtin_assume_aligned(c1, 1), vreinterpretq_u32_s8(vout0x01234567_1x01234567), 2); c1 += 4;
+        vst1q_lane_u32(__builtin_assume_aligned(c0, 1), vreinterpretq_u32_s8(vout0x01234567_1x01234567), 0); c0 += 4;
+        vout2x01234567 = vext_s8(vout2x01234567, vout2x01234567, 4);
+        vout0x01234567_1x01234567 = vextq_s8(vout0x01234567_1x01234567, vout0x01234567_1x01234567, 4);
+      }
+      if (nc & 2) {
+        vst1_lane_u16(__builtin_assume_aligned(c2, 1), vreinterpret_u16_s8(vout2x01234567), 0); c2 += 2;
+        vst1q_lane_u16(__builtin_assume_aligned(c1, 1), vreinterpretq_u16_s8(vout0x01234567_1x01234567), 4); c1 += 2;
+        vst1q_lane_u16(__builtin_assume_aligned(c0, 1), vreinterpretq_u16_s8(vout0x01234567_1x01234567), 0); c0 += 2;
+        vout2x01234567 = vext_s8(vout2x01234567, vout2x01234567, 2);
+        vout0x01234567_1x01234567 = vextq_s8(vout0x01234567_1x01234567, vout0x01234567_1x01234567, 2);
+      }
+      if (nc & 1) {
+        vst1_lane_s8(c2, vout2x01234567, 0);
+        vst1q_lane_s8(c1, vout0x01234567_1x01234567, 8);
+        vst1q_lane_s8(c0, vout0x01234567_1x01234567, 0);
+      }
+
+      nc = 0;
+    }
+  } while (nc != 0);
+}
diff --git a/src/qs8-igemm/gen/2x8s4c2-minmax-rndnu-neon-mlal-padal.c b/src/qs8-igemm/gen/3x8c2s4-minmax-rndnu-neon-mlal-padal.c
similarity index 73%
copy from src/qs8-igemm/gen/2x8s4c2-minmax-rndnu-neon-mlal-padal.c
copy to src/qs8-igemm/gen/3x8c2s4-minmax-rndnu-neon-mlal-padal.c
index 4b97f1b..303ab08 100644
--- a/src/qs8-igemm/gen/2x8s4c2-minmax-rndnu-neon-mlal-padal.c
+++ b/src/qs8-igemm/gen/3x8c2s4-minmax-rndnu-neon-mlal-padal.c
@@ -15,7 +15,7 @@
 #include <xnnpack/math.h>
 
 
-void xnn_qs8_igemm_minmax_rndnu_ukernel_2x8s4c2__neon_mlal_padal(
+void xnn_qs8_igemm_minmax_rndnu_ukernel_3x8c2s4__neon_mlal_padal(
     size_t mr,
     size_t nc,
     size_t kc,
@@ -30,11 +30,11 @@
     const union xnn_qs8_conv_minmax_params params[restrict XNN_MIN_ELEMENTS(1)]) XNN_DISABLE_TSAN XNN_DISABLE_MSAN
 {
   assert(mr != 0);
-  assert(mr <= 2);
+  assert(mr <= 3);
   assert(nc != 0);
   assert(kc != 0);
   assert(ks != 0);
-  assert(ks % (2 * sizeof(void*)) == 0);
+  assert(ks % (3 * sizeof(void*)) == 0);
   assert(a_offset % sizeof(int8_t) == 0);
   assert(a != NULL);
   assert(w != NULL);
@@ -42,15 +42,21 @@
 
   int8_t* c0 = c;
   int8_t* c1 = (int8_t*) ((uintptr_t) c0 + cm_stride);
-  if XNN_UNPREDICTABLE(mr != 2) {
+  if XNN_UNPREDICTABLE(mr < 2) {
     c1 = c0;
   }
+  int8_t* c2 = (int8_t*) ((uintptr_t) c1 + cm_stride);
+  if XNN_UNPREDICTABLE(mr <= 2) {
+    c2 = c1;
+  }
 
   do {
     int32x4_t vacc0x0123 = vld1q_s32(w); w = (const void*) ((uintptr_t) w + 4 * sizeof(int32_t));
     int32x4_t vacc0x4567 = vld1q_s32(w); w = (const void*) ((uintptr_t) w + 4 * sizeof(int32_t));
     int32x4_t vacc1x0123 = vacc0x0123;
     int32x4_t vacc1x4567 = vacc0x4567;
+    int32x4_t vacc2x0123 = vacc0x0123;
+    int32x4_t vacc2x4567 = vacc0x4567;
 
     size_t p = ks;
     do {
@@ -62,7 +68,11 @@
       if XNN_UNPREDICTABLE(a1 != zero) {
         a1 = (const int8_t*) ((uintptr_t) a1 + a_offset);
       }
-      a += 2;
+      const int8_t* restrict a2 = a[2];
+      if XNN_UNPREDICTABLE(a2 != zero) {
+        a2 = (const int8_t*) ((uintptr_t) a2 + a_offset);
+      }
+      a += 3;
 
       size_t k = kc;
 
@@ -71,6 +81,8 @@
         int8x8_t va0x1 = vld1_s8(a0); a0 += 8;
         int8x8_t va1x0 = vld1_s8(a1); a1 += 8;
         int8x8_t va1x1 = vld1_s8(a1); a1 += 8;
+        int8x8_t va2x0 = vld1_s8(a2); a2 += 8;
+        int8x8_t va2x1 = vld1_s8(a2); a2 += 8;
 
         const int8x8_t vb0123c0x0 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
         const int8x8_t vb4567c0x0 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
@@ -83,72 +95,102 @@
 
         int16x8_t vprod0x0123c0 = vmull_s8(vb0123c0x0, va0x0);
         int16x8_t vprod1x0123c0 = vmull_s8(vb0123c0x0, va1x0);
+        int16x8_t vprod2x0123c0 = vmull_s8(vb0123c0x0, va2x0);
         const int8x8_t vb0123c0x1 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
         vprod0x0123c0 = vmlal_s8(vprod0x0123c0, vb0123c0x1, va0x1);
         vprod1x0123c0 = vmlal_s8(vprod1x0123c0, vb0123c0x1, va1x1);
+        vprod2x0123c0 = vmlal_s8(vprod2x0123c0, vb0123c0x1, va2x1);
         vacc0x0123 = vpadalq_s16(vacc0x0123, vprod0x0123c0);
         vacc1x0123 = vpadalq_s16(vacc1x0123, vprod1x0123c0);
+        vacc2x0123 = vpadalq_s16(vacc2x0123, vprod2x0123c0);
         int16x8_t vprod0x4567c0 = vmull_s8(vb4567c0x0, va0x0);
         int16x8_t vprod1x4567c0 = vmull_s8(vb4567c0x0, va1x0);
+        int16x8_t vprod2x4567c0 = vmull_s8(vb4567c0x0, va2x0);
         const int8x8_t vb4567c0x1 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
         vprod0x4567c0 = vmlal_s8(vprod0x4567c0, vb4567c0x1, va0x1);
         vprod1x4567c0 = vmlal_s8(vprod1x4567c0, vb4567c0x1, va1x1);
+        vprod2x4567c0 = vmlal_s8(vprod2x4567c0, vb4567c0x1, va2x1);
         vacc0x4567 = vpadalq_s16(vacc0x4567, vprod0x4567c0);
         vacc1x4567 = vpadalq_s16(vacc1x4567, vprod1x4567c0);
+        vacc2x4567 = vpadalq_s16(vacc2x4567, vprod2x4567c0);
         va0x0 = vext_s8(va0x0, va0x0, 2);
         va0x1 = vext_s8(va0x1, va0x1, 2);
         va1x0 = vext_s8(va1x0, va1x0, 2);
         va1x1 = vext_s8(va1x1, va1x1, 2);
+        va2x0 = vext_s8(va2x0, va2x0, 2);
+        va2x1 = vext_s8(va2x1, va2x1, 2);
         int16x8_t vprod0x0123c1 = vmull_s8(vb0123c1x0, va0x0);
         int16x8_t vprod1x0123c1 = vmull_s8(vb0123c1x0, va1x0);
+        int16x8_t vprod2x0123c1 = vmull_s8(vb0123c1x0, va2x0);
         const int8x8_t vb0123c1x1 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
         vprod0x0123c1 = vmlal_s8(vprod0x0123c1, vb0123c1x1, va0x1);
         vprod1x0123c1 = vmlal_s8(vprod1x0123c1, vb0123c1x1, va1x1);
+        vprod2x0123c1 = vmlal_s8(vprod2x0123c1, vb0123c1x1, va2x1);
         vacc0x0123 = vpadalq_s16(vacc0x0123, vprod0x0123c1);
         vacc1x0123 = vpadalq_s16(vacc1x0123, vprod1x0123c1);
+        vacc2x0123 = vpadalq_s16(vacc2x0123, vprod2x0123c1);
         int16x8_t vprod0x4567c1 = vmull_s8(vb4567c1x0, va0x0);
         int16x8_t vprod1x4567c1 = vmull_s8(vb4567c1x0, va1x0);
+        int16x8_t vprod2x4567c1 = vmull_s8(vb4567c1x0, va2x0);
         const int8x8_t vb4567c1x1 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
         vprod0x4567c1 = vmlal_s8(vprod0x4567c1, vb4567c1x1, va0x1);
         vprod1x4567c1 = vmlal_s8(vprod1x4567c1, vb4567c1x1, va1x1);
+        vprod2x4567c1 = vmlal_s8(vprod2x4567c1, vb4567c1x1, va2x1);
         vacc0x4567 = vpadalq_s16(vacc0x4567, vprod0x4567c1);
         vacc1x4567 = vpadalq_s16(vacc1x4567, vprod1x4567c1);
+        vacc2x4567 = vpadalq_s16(vacc2x4567, vprod2x4567c1);
         va0x0 = vext_s8(va0x0, va0x0, 2);
         va0x1 = vext_s8(va0x1, va0x1, 2);
         va1x0 = vext_s8(va1x0, va1x0, 2);
         va1x1 = vext_s8(va1x1, va1x1, 2);
+        va2x0 = vext_s8(va2x0, va2x0, 2);
+        va2x1 = vext_s8(va2x1, va2x1, 2);
         int16x8_t vprod0x0123c2 = vmull_s8(vb0123c2x0, va0x0);
         int16x8_t vprod1x0123c2 = vmull_s8(vb0123c2x0, va1x0);
+        int16x8_t vprod2x0123c2 = vmull_s8(vb0123c2x0, va2x0);
         const int8x8_t vb0123c2x1 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
         vprod0x0123c2 = vmlal_s8(vprod0x0123c2, vb0123c2x1, va0x1);
         vprod1x0123c2 = vmlal_s8(vprod1x0123c2, vb0123c2x1, va1x1);
+        vprod2x0123c2 = vmlal_s8(vprod2x0123c2, vb0123c2x1, va2x1);
         vacc0x0123 = vpadalq_s16(vacc0x0123, vprod0x0123c2);
         vacc1x0123 = vpadalq_s16(vacc1x0123, vprod1x0123c2);
+        vacc2x0123 = vpadalq_s16(vacc2x0123, vprod2x0123c2);
         int16x8_t vprod0x4567c2 = vmull_s8(vb4567c2x0, va0x0);
         int16x8_t vprod1x4567c2 = vmull_s8(vb4567c2x0, va1x0);
+        int16x8_t vprod2x4567c2 = vmull_s8(vb4567c2x0, va2x0);
         const int8x8_t vb4567c2x1 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
         vprod0x4567c2 = vmlal_s8(vprod0x4567c2, vb4567c2x1, va0x1);
         vprod1x4567c2 = vmlal_s8(vprod1x4567c2, vb4567c2x1, va1x1);
+        vprod2x4567c2 = vmlal_s8(vprod2x4567c2, vb4567c2x1, va2x1);
         vacc0x4567 = vpadalq_s16(vacc0x4567, vprod0x4567c2);
         vacc1x4567 = vpadalq_s16(vacc1x4567, vprod1x4567c2);
+        vacc2x4567 = vpadalq_s16(vacc2x4567, vprod2x4567c2);
         va0x0 = vext_s8(va0x0, va0x0, 2);
         va0x1 = vext_s8(va0x1, va0x1, 2);
         va1x0 = vext_s8(va1x0, va1x0, 2);
         va1x1 = vext_s8(va1x1, va1x1, 2);
+        va2x0 = vext_s8(va2x0, va2x0, 2);
+        va2x1 = vext_s8(va2x1, va2x1, 2);
         int16x8_t vprod0x0123c3 = vmull_s8(vb0123c3x0, va0x0);
         int16x8_t vprod1x0123c3 = vmull_s8(vb0123c3x0, va1x0);
+        int16x8_t vprod2x0123c3 = vmull_s8(vb0123c3x0, va2x0);
         const int8x8_t vb0123c3x1 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
         vprod0x0123c3 = vmlal_s8(vprod0x0123c3, vb0123c3x1, va0x1);
         vprod1x0123c3 = vmlal_s8(vprod1x0123c3, vb0123c3x1, va1x1);
+        vprod2x0123c3 = vmlal_s8(vprod2x0123c3, vb0123c3x1, va2x1);
         vacc0x0123 = vpadalq_s16(vacc0x0123, vprod0x0123c3);
         vacc1x0123 = vpadalq_s16(vacc1x0123, vprod1x0123c3);
+        vacc2x0123 = vpadalq_s16(vacc2x0123, vprod2x0123c3);
         int16x8_t vprod0x4567c3 = vmull_s8(vb4567c3x0, va0x0);
         int16x8_t vprod1x4567c3 = vmull_s8(vb4567c3x0, va1x0);
+        int16x8_t vprod2x4567c3 = vmull_s8(vb4567c3x0, va2x0);
         const int8x8_t vb4567c3x1 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
         vprod0x4567c3 = vmlal_s8(vprod0x4567c3, vb4567c3x1, va0x1);
         vprod1x4567c3 = vmlal_s8(vprod1x4567c3, vb4567c3x1, va1x1);
+        vprod2x4567c3 = vmlal_s8(vprod2x4567c3, vb4567c3x1, va2x1);
         vacc0x4567 = vpadalq_s16(vacc0x4567, vprod0x4567c3);
         vacc1x4567 = vpadalq_s16(vacc1x4567, vprod1x4567c3);
+        vacc2x4567 = vpadalq_s16(vacc2x4567, vprod2x4567c3);
 
         k -= 16 * sizeof(int8_t);
       }
@@ -156,6 +198,7 @@
       if (k >= 8 * sizeof(int8_t)) {
         int8x8_t va0x0 = vld1_s8(a0); a0 += 8;
         int8x8_t va1x0 = vld1_s8(a1); a1 += 8;
+        int8x8_t va2x0 = vld1_s8(a2); a2 += 8;
 
         const int8x8_t vb0123c0x0 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
         const int8x8_t vb4567c0x0 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
@@ -168,42 +211,61 @@
 
         int16x8_t vprod0x0123c0 = vmull_s8(vb0123c0x0, va0x0);
         int16x8_t vprod1x0123c0 = vmull_s8(vb0123c0x0, va1x0);
+        int16x8_t vprod2x0123c0 = vmull_s8(vb0123c0x0, va2x0);
         vacc0x0123 = vpadalq_s16(vacc0x0123, vprod0x0123c0);
         vacc1x0123 = vpadalq_s16(vacc1x0123, vprod1x0123c0);
+        vacc2x0123 = vpadalq_s16(vacc2x0123, vprod2x0123c0);
         int16x8_t vprod0x4567c0 = vmull_s8(vb4567c0x0, va0x0);
         int16x8_t vprod1x4567c0 = vmull_s8(vb4567c0x0, va1x0);
+        int16x8_t vprod2x4567c0 = vmull_s8(vb4567c0x0, va2x0);
         vacc0x4567 = vpadalq_s16(vacc0x4567, vprod0x4567c0);
         vacc1x4567 = vpadalq_s16(vacc1x4567, vprod1x4567c0);
+        vacc2x4567 = vpadalq_s16(vacc2x4567, vprod2x4567c0);
         va0x0 = vext_s8(va0x0, va0x0, 2);
         va1x0 = vext_s8(va1x0, va1x0, 2);
+        va2x0 = vext_s8(va2x0, va2x0, 2);
         int16x8_t vprod0x0123c1 = vmull_s8(vb0123c1x0, va0x0);
         int16x8_t vprod1x0123c1 = vmull_s8(vb0123c1x0, va1x0);
+        int16x8_t vprod2x0123c1 = vmull_s8(vb0123c1x0, va2x0);
         vacc0x0123 = vpadalq_s16(vacc0x0123, vprod0x0123c1);
         vacc1x0123 = vpadalq_s16(vacc1x0123, vprod1x0123c1);
+        vacc2x0123 = vpadalq_s16(vacc2x0123, vprod2x0123c1);
         int16x8_t vprod0x4567c1 = vmull_s8(vb4567c1x0, va0x0);
         int16x8_t vprod1x4567c1 = vmull_s8(vb4567c1x0, va1x0);
+        int16x8_t vprod2x4567c1 = vmull_s8(vb4567c1x0, va2x0);
         vacc0x4567 = vpadalq_s16(vacc0x4567, vprod0x4567c1);
         vacc1x4567 = vpadalq_s16(vacc1x4567, vprod1x4567c1);
+        vacc2x4567 = vpadalq_s16(vacc2x4567, vprod2x4567c1);
         va0x0 = vext_s8(va0x0, va0x0, 2);
         va1x0 = vext_s8(va1x0, va1x0, 2);
+        va2x0 = vext_s8(va2x0, va2x0, 2);
         int16x8_t vprod0x0123c2 = vmull_s8(vb0123c2x0, va0x0);
         int16x8_t vprod1x0123c2 = vmull_s8(vb0123c2x0, va1x0);
+        int16x8_t vprod2x0123c2 = vmull_s8(vb0123c2x0, va2x0);
         vacc0x0123 = vpadalq_s16(vacc0x0123, vprod0x0123c2);
         vacc1x0123 = vpadalq_s16(vacc1x0123, vprod1x0123c2);
+        vacc2x0123 = vpadalq_s16(vacc2x0123, vprod2x0123c2);
         int16x8_t vprod0x4567c2 = vmull_s8(vb4567c2x0, va0x0);
         int16x8_t vprod1x4567c2 = vmull_s8(vb4567c2x0, va1x0);
+        int16x8_t vprod2x4567c2 = vmull_s8(vb4567c2x0, va2x0);
         vacc0x4567 = vpadalq_s16(vacc0x4567, vprod0x4567c2);
         vacc1x4567 = vpadalq_s16(vacc1x4567, vprod1x4567c2);
+        vacc2x4567 = vpadalq_s16(vacc2x4567, vprod2x4567c2);
         va0x0 = vext_s8(va0x0, va0x0, 2);
         va1x0 = vext_s8(va1x0, va1x0, 2);
+        va2x0 = vext_s8(va2x0, va2x0, 2);
         int16x8_t vprod0x0123c3 = vmull_s8(vb0123c3x0, va0x0);
         int16x8_t vprod1x0123c3 = vmull_s8(vb0123c3x0, va1x0);
+        int16x8_t vprod2x0123c3 = vmull_s8(vb0123c3x0, va2x0);
         vacc0x0123 = vpadalq_s16(vacc0x0123, vprod0x0123c3);
         vacc1x0123 = vpadalq_s16(vacc1x0123, vprod1x0123c3);
+        vacc2x0123 = vpadalq_s16(vacc2x0123, vprod2x0123c3);
         int16x8_t vprod0x4567c3 = vmull_s8(vb4567c3x0, va0x0);
         int16x8_t vprod1x4567c3 = vmull_s8(vb4567c3x0, va1x0);
+        int16x8_t vprod2x4567c3 = vmull_s8(vb4567c3x0, va2x0);
         vacc0x4567 = vpadalq_s16(vacc0x4567, vprod0x4567c3);
         vacc1x4567 = vpadalq_s16(vacc1x4567, vprod1x4567c3);
+        vacc2x4567 = vpadalq_s16(vacc2x4567, vprod2x4567c3);
 
         k -= 8 * sizeof(int8_t);
       }
@@ -211,6 +273,7 @@
       if XNN_UNLIKELY(k != 0) {
         const int8x8_t va0 = vld1_s8(a0); a0 = (const int8_t*) ((uintptr_t) a0 + k);
         const int8x8_t va1 = vld1_s8(a1); a1 = (const int8_t*) ((uintptr_t) a1 + k);
+        const int8x8_t va2 = vld1_s8(a2); a2 = (const int8_t*) ((uintptr_t) a2 + k);
 
         const int8x8_t vb0123c0 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
         const int8x8_t vb4567c0 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
@@ -223,6 +286,10 @@
         vacc1x0123 = vpadalq_s16(vacc1x0123, vprod1x0123c0);
         const int16x8_t vprod1x4567c0 = vmull_s8(vb4567c0, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va1), 0)));
         vacc1x4567 = vpadalq_s16(vacc1x4567, vprod1x4567c0);
+        const int16x8_t vprod2x0123c0 = vmull_s8(vb0123c0, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va2), 0)));
+        vacc2x0123 = vpadalq_s16(vacc2x0123, vprod2x0123c0);
+        const int16x8_t vprod2x4567c0 = vmull_s8(vb4567c0, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va2), 0)));
+        vacc2x4567 = vpadalq_s16(vacc2x4567, vprod2x4567c0);
 
         if (k > 2 * sizeof(int8_t)) {
           const int8x8_t vb0123c1 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
@@ -236,6 +303,10 @@
           vacc1x0123 = vpadalq_s16(vacc1x0123, vprod1x0123c1);
           const int16x8_t vprod1x4567c1 = vmull_s8(vb4567c1, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va1), 1)));
           vacc1x4567 = vpadalq_s16(vacc1x4567, vprod1x4567c1);
+          const int16x8_t vprod2x0123c1 = vmull_s8(vb0123c1, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va2), 1)));
+          vacc2x0123 = vpadalq_s16(vacc2x0123, vprod2x0123c1);
+          const int16x8_t vprod2x4567c1 = vmull_s8(vb4567c1, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va2), 1)));
+          vacc2x4567 = vpadalq_s16(vacc2x4567, vprod2x4567c1);
 
           if (k > 4 * sizeof(int8_t)) {
             const int8x8_t vb0123c2 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
@@ -249,6 +320,10 @@
             vacc1x0123 = vpadalq_s16(vacc1x0123, vprod1x0123c2);
             const int16x8_t vprod1x4567c2 = vmull_s8(vb4567c2, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va1), 2)));
             vacc1x4567 = vpadalq_s16(vacc1x4567, vprod1x4567c2);
+            const int16x8_t vprod2x0123c2 = vmull_s8(vb0123c2, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va2), 2)));
+            vacc2x0123 = vpadalq_s16(vacc2x0123, vprod2x0123c2);
+            const int16x8_t vprod2x4567c2 = vmull_s8(vb4567c2, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va2), 2)));
+            vacc2x4567 = vpadalq_s16(vacc2x4567, vprod2x4567c2);
 
             if (k > 6 * sizeof(int8_t)) {
               const int8x8_t vb0123c2 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
@@ -262,11 +337,15 @@
               vacc1x0123 = vpadalq_s16(vacc1x0123, vprod1x0123c2);
               const int16x8_t vprod1x4567c2 = vmull_s8(vb4567c2, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va1), 3)));
               vacc1x4567 = vpadalq_s16(vacc1x4567, vprod1x4567c2);
+              const int16x8_t vprod2x0123c2 = vmull_s8(vb0123c2, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va2), 3)));
+              vacc2x0123 = vpadalq_s16(vacc2x0123, vprod2x0123c2);
+              const int16x8_t vprod2x4567c2 = vmull_s8(vb4567c2, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va2), 3)));
+              vacc2x4567 = vpadalq_s16(vacc2x4567, vprod2x4567c2);
             }
           }
         }
       }
-      p -= 2 * sizeof(void*);
+      p -= 3 * sizeof(void*);
     } while (p != 0);
 
     const int32x4_t vright_pre_shift = vld1q_dup_s32(&params->rndnu_neon.right_pre_shift);
@@ -277,40 +356,54 @@
     vacc0x4567 = vshlq_s32(vacc0x4567, vright_pre_shift);
     vacc1x0123 = vshlq_s32(vacc1x0123, vright_pre_shift);
     vacc1x4567 = vshlq_s32(vacc1x4567, vright_pre_shift);
+    vacc2x0123 = vshlq_s32(vacc2x0123, vright_pre_shift);
+    vacc2x4567 = vshlq_s32(vacc2x4567, vright_pre_shift);
 
     vacc0x0123 = vqdmulhq_s32(vacc0x0123, vmultiplier);
     vacc0x4567 = vqdmulhq_s32(vacc0x4567, vmultiplier);
     vacc1x0123 = vqdmulhq_s32(vacc1x0123, vmultiplier);
     vacc1x4567 = vqdmulhq_s32(vacc1x4567, vmultiplier);
+    vacc2x0123 = vqdmulhq_s32(vacc2x0123, vmultiplier);
+    vacc2x4567 = vqdmulhq_s32(vacc2x4567, vmultiplier);
 
     vacc0x0123 = vrshlq_s32(vacc0x0123, vright_post_shift);
     vacc0x4567 = vrshlq_s32(vacc0x4567, vright_post_shift);
     vacc1x0123 = vrshlq_s32(vacc1x0123, vright_post_shift);
     vacc1x4567 = vrshlq_s32(vacc1x4567, vright_post_shift);
+    vacc2x0123 = vrshlq_s32(vacc2x0123, vright_post_shift);
+    vacc2x4567 = vrshlq_s32(vacc2x4567, vright_post_shift);
 
     const int16x8_t voutput_zero_point = vld1q_dup_s16(&params->rndnu_neon.output_zero_point);
 #if XNN_ARCH_ARM64
     const int16x8_t vacc0x01234567 = vqaddq_s16(vqmovn_high_s32(vqmovn_s32(vacc0x0123), vacc0x4567), voutput_zero_point);
     const int16x8_t vacc1x01234567 = vqaddq_s16(vqmovn_high_s32(vqmovn_s32(vacc1x0123), vacc1x4567), voutput_zero_point);
+    const int16x8_t vacc2x01234567 = vqaddq_s16(vqmovn_high_s32(vqmovn_s32(vacc2x0123), vacc2x4567), voutput_zero_point);
 
     int8x16_t vout0x01234567_1x01234567 = vqmovn_high_s16(vqmovn_s16(vacc0x01234567), vacc1x01234567);
+    int8x8_t vout2x01234567 = vqmovn_s16(vacc2x01234567);
 #else
     const int16x8_t vacc0x01234567 = vqaddq_s16(vcombine_s16(vqmovn_s32(vacc0x0123), vqmovn_s32(vacc0x4567)), voutput_zero_point);
     const int16x8_t vacc1x01234567 = vqaddq_s16(vcombine_s16(vqmovn_s32(vacc1x0123), vqmovn_s32(vacc1x4567)), voutput_zero_point);
+    const int16x8_t vacc2x01234567 = vqaddq_s16(vcombine_s16(vqmovn_s32(vacc2x0123), vqmovn_s32(vacc2x4567)), voutput_zero_point);
 
     int8x16_t vout0x01234567_1x01234567 = vcombine_s8(vqmovn_s16(vacc0x01234567), vqmovn_s16(vacc1x01234567));
+    int8x8_t vout2x01234567 = vqmovn_s16(vacc2x01234567);
 #endif
     const int8x16_t voutput_min = vld1q_dup_s8(&params->rndnu_neon.output_min);
     const int8x16_t voutput_max = vld1q_dup_s8(&params->rndnu_neon.output_max);
 
+    vout2x01234567 = vmax_s8(vout2x01234567, vget_low_s8(voutput_min));
     vout0x01234567_1x01234567 = vmaxq_s8(vout0x01234567_1x01234567, voutput_min);
 
+    vout2x01234567 = vmin_s8(vout2x01234567, vget_low_s8(voutput_max));
     vout0x01234567_1x01234567 = vminq_s8(vout0x01234567_1x01234567, voutput_max);
 
     if (nc >= 8) {
+      vst1_s8(c2 + 0, vout2x01234567);
       vst1_s8(c1 + 0, vget_high_s8(vout0x01234567_1x01234567));
       vst1_s8(c0 + 0, vget_low_s8(vout0x01234567_1x01234567));
 
+      c2 = (int8_t*) ((uintptr_t) c2 + cn_stride);
       c1 = (int8_t*) ((uintptr_t) c1 + cn_stride);
       c0 = (int8_t*) ((uintptr_t) c0 + cn_stride);
 
@@ -319,16 +412,21 @@
       nc -= 8;
     } else {
       if (nc & 4) {
+        vst1_lane_u32(__builtin_assume_aligned(c2, 1), vreinterpret_u32_s8(vout2x01234567), 0); c2 += 4;
         vst1q_lane_u32(__builtin_assume_aligned(c1, 1), vreinterpretq_u32_s8(vout0x01234567_1x01234567), 2); c1 += 4;
         vst1q_lane_u32(__builtin_assume_aligned(c0, 1), vreinterpretq_u32_s8(vout0x01234567_1x01234567), 0); c0 += 4;
+        vout2x01234567 = vext_s8(vout2x01234567, vout2x01234567, 4);
         vout0x01234567_1x01234567 = vextq_s8(vout0x01234567_1x01234567, vout0x01234567_1x01234567, 4);
       }
       if (nc & 2) {
+        vst1_lane_u16(__builtin_assume_aligned(c2, 1), vreinterpret_u16_s8(vout2x01234567), 0); c2 += 2;
         vst1q_lane_u16(__builtin_assume_aligned(c1, 1), vreinterpretq_u16_s8(vout0x01234567_1x01234567), 4); c1 += 2;
         vst1q_lane_u16(__builtin_assume_aligned(c0, 1), vreinterpretq_u16_s8(vout0x01234567_1x01234567), 0); c0 += 2;
+        vout2x01234567 = vext_s8(vout2x01234567, vout2x01234567, 2);
         vout0x01234567_1x01234567 = vextq_s8(vout0x01234567_1x01234567, vout0x01234567_1x01234567, 2);
       }
       if (nc & 1) {
+        vst1_lane_s8(c2, vout2x01234567, 0);
         vst1q_lane_s8(c1, vout0x01234567_1x01234567, 8);
         vst1q_lane_s8(c0, vout0x01234567_1x01234567, 0);
       }
diff --git a/src/qs8-igemm/gen/2x8s4c2-minmax-rndnu-neon-mull-padal.c b/src/qs8-igemm/gen/3x8c2s4-minmax-rndnu-neon-mull-padal.c
similarity index 73%
copy from src/qs8-igemm/gen/2x8s4c2-minmax-rndnu-neon-mull-padal.c
copy to src/qs8-igemm/gen/3x8c2s4-minmax-rndnu-neon-mull-padal.c
index eaad097..c875cdc 100644
--- a/src/qs8-igemm/gen/2x8s4c2-minmax-rndnu-neon-mull-padal.c
+++ b/src/qs8-igemm/gen/3x8c2s4-minmax-rndnu-neon-mull-padal.c
@@ -15,7 +15,7 @@
 #include <xnnpack/math.h>
 
 
-void xnn_qs8_igemm_minmax_rndnu_ukernel_2x8s4c2__neon_mull_padal(
+void xnn_qs8_igemm_minmax_rndnu_ukernel_3x8c2s4__neon_mull_padal(
     size_t mr,
     size_t nc,
     size_t kc,
@@ -30,11 +30,11 @@
     const union xnn_qs8_conv_minmax_params params[restrict XNN_MIN_ELEMENTS(1)]) XNN_DISABLE_TSAN XNN_DISABLE_MSAN
 {
   assert(mr != 0);
-  assert(mr <= 2);
+  assert(mr <= 3);
   assert(nc != 0);
   assert(kc != 0);
   assert(ks != 0);
-  assert(ks % (2 * sizeof(void*)) == 0);
+  assert(ks % (3 * sizeof(void*)) == 0);
   assert(a_offset % sizeof(int8_t) == 0);
   assert(a != NULL);
   assert(w != NULL);
@@ -42,15 +42,21 @@
 
   int8_t* c0 = c;
   int8_t* c1 = (int8_t*) ((uintptr_t) c0 + cm_stride);
-  if XNN_UNPREDICTABLE(mr != 2) {
+  if XNN_UNPREDICTABLE(mr < 2) {
     c1 = c0;
   }
+  int8_t* c2 = (int8_t*) ((uintptr_t) c1 + cm_stride);
+  if XNN_UNPREDICTABLE(mr <= 2) {
+    c2 = c1;
+  }
 
   do {
     int32x4_t vacc0x0123 = vld1q_s32(w); w = (const void*) ((uintptr_t) w + 4 * sizeof(int32_t));
     int32x4_t vacc0x4567 = vld1q_s32(w); w = (const void*) ((uintptr_t) w + 4 * sizeof(int32_t));
     int32x4_t vacc1x0123 = vacc0x0123;
     int32x4_t vacc1x4567 = vacc0x4567;
+    int32x4_t vacc2x0123 = vacc0x0123;
+    int32x4_t vacc2x4567 = vacc0x4567;
 
     size_t p = ks;
     do {
@@ -62,7 +68,11 @@
       if XNN_UNPREDICTABLE(a1 != zero) {
         a1 = (const int8_t*) ((uintptr_t) a1 + a_offset);
       }
-      a += 2;
+      const int8_t* restrict a2 = a[2];
+      if XNN_UNPREDICTABLE(a2 != zero) {
+        a2 = (const int8_t*) ((uintptr_t) a2 + a_offset);
+      }
+      a += 3;
 
       size_t k = kc;
 
@@ -70,6 +80,7 @@
       while (k >= 8 * sizeof(int8_t)) {
         int8x8_t va0x0 = vld1_s8(a0); a0 += 8;
         int8x8_t va1x0 = vld1_s8(a1); a1 += 8;
+        int8x8_t va2x0 = vld1_s8(a2); a2 += 8;
 
         const int8x8_t vb0123c0x0 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
         const int8x8_t vb4567c0x0 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
@@ -82,42 +93,61 @@
 
         int16x8_t vprod0x0123c0 = vmull_s8(vb0123c0x0, va0x0);
         int16x8_t vprod1x0123c0 = vmull_s8(vb0123c0x0, va1x0);
+        int16x8_t vprod2x0123c0 = vmull_s8(vb0123c0x0, va2x0);
         vacc0x0123 = vpadalq_s16(vacc0x0123, vprod0x0123c0);
         vacc1x0123 = vpadalq_s16(vacc1x0123, vprod1x0123c0);
+        vacc2x0123 = vpadalq_s16(vacc2x0123, vprod2x0123c0);
         int16x8_t vprod0x4567c0 = vmull_s8(vb4567c0x0, va0x0);
         int16x8_t vprod1x4567c0 = vmull_s8(vb4567c0x0, va1x0);
+        int16x8_t vprod2x4567c0 = vmull_s8(vb4567c0x0, va2x0);
         vacc0x4567 = vpadalq_s16(vacc0x4567, vprod0x4567c0);
         vacc1x4567 = vpadalq_s16(vacc1x4567, vprod1x4567c0);
+        vacc2x4567 = vpadalq_s16(vacc2x4567, vprod2x4567c0);
         va0x0 = vext_s8(va0x0, va0x0, 2);
         va1x0 = vext_s8(va1x0, va1x0, 2);
+        va2x0 = vext_s8(va2x0, va2x0, 2);
         int16x8_t vprod0x0123c1 = vmull_s8(vb0123c1x0, va0x0);
         int16x8_t vprod1x0123c1 = vmull_s8(vb0123c1x0, va1x0);
+        int16x8_t vprod2x0123c1 = vmull_s8(vb0123c1x0, va2x0);
         vacc0x0123 = vpadalq_s16(vacc0x0123, vprod0x0123c1);
         vacc1x0123 = vpadalq_s16(vacc1x0123, vprod1x0123c1);
+        vacc2x0123 = vpadalq_s16(vacc2x0123, vprod2x0123c1);
         int16x8_t vprod0x4567c1 = vmull_s8(vb4567c1x0, va0x0);
         int16x8_t vprod1x4567c1 = vmull_s8(vb4567c1x0, va1x0);
+        int16x8_t vprod2x4567c1 = vmull_s8(vb4567c1x0, va2x0);
         vacc0x4567 = vpadalq_s16(vacc0x4567, vprod0x4567c1);
         vacc1x4567 = vpadalq_s16(vacc1x4567, vprod1x4567c1);
+        vacc2x4567 = vpadalq_s16(vacc2x4567, vprod2x4567c1);
         va0x0 = vext_s8(va0x0, va0x0, 2);
         va1x0 = vext_s8(va1x0, va1x0, 2);
+        va2x0 = vext_s8(va2x0, va2x0, 2);
         int16x8_t vprod0x0123c2 = vmull_s8(vb0123c2x0, va0x0);
         int16x8_t vprod1x0123c2 = vmull_s8(vb0123c2x0, va1x0);
+        int16x8_t vprod2x0123c2 = vmull_s8(vb0123c2x0, va2x0);
         vacc0x0123 = vpadalq_s16(vacc0x0123, vprod0x0123c2);
         vacc1x0123 = vpadalq_s16(vacc1x0123, vprod1x0123c2);
+        vacc2x0123 = vpadalq_s16(vacc2x0123, vprod2x0123c2);
         int16x8_t vprod0x4567c2 = vmull_s8(vb4567c2x0, va0x0);
         int16x8_t vprod1x4567c2 = vmull_s8(vb4567c2x0, va1x0);
+        int16x8_t vprod2x4567c2 = vmull_s8(vb4567c2x0, va2x0);
         vacc0x4567 = vpadalq_s16(vacc0x4567, vprod0x4567c2);
         vacc1x4567 = vpadalq_s16(vacc1x4567, vprod1x4567c2);
+        vacc2x4567 = vpadalq_s16(vacc2x4567, vprod2x4567c2);
         va0x0 = vext_s8(va0x0, va0x0, 2);
         va1x0 = vext_s8(va1x0, va1x0, 2);
+        va2x0 = vext_s8(va2x0, va2x0, 2);
         int16x8_t vprod0x0123c3 = vmull_s8(vb0123c3x0, va0x0);
         int16x8_t vprod1x0123c3 = vmull_s8(vb0123c3x0, va1x0);
+        int16x8_t vprod2x0123c3 = vmull_s8(vb0123c3x0, va2x0);
         vacc0x0123 = vpadalq_s16(vacc0x0123, vprod0x0123c3);
         vacc1x0123 = vpadalq_s16(vacc1x0123, vprod1x0123c3);
+        vacc2x0123 = vpadalq_s16(vacc2x0123, vprod2x0123c3);
         int16x8_t vprod0x4567c3 = vmull_s8(vb4567c3x0, va0x0);
         int16x8_t vprod1x4567c3 = vmull_s8(vb4567c3x0, va1x0);
+        int16x8_t vprod2x4567c3 = vmull_s8(vb4567c3x0, va2x0);
         vacc0x4567 = vpadalq_s16(vacc0x4567, vprod0x4567c3);
         vacc1x4567 = vpadalq_s16(vacc1x4567, vprod1x4567c3);
+        vacc2x4567 = vpadalq_s16(vacc2x4567, vprod2x4567c3);
 
         k -= 8 * sizeof(int8_t);
       }
@@ -125,6 +155,7 @@
       if XNN_UNLIKELY(k != 0) {
         const int8x8_t va0 = vld1_s8(a0); a0 = (const int8_t*) ((uintptr_t) a0 + k);
         const int8x8_t va1 = vld1_s8(a1); a1 = (const int8_t*) ((uintptr_t) a1 + k);
+        const int8x8_t va2 = vld1_s8(a2); a2 = (const int8_t*) ((uintptr_t) a2 + k);
 
         const int8x8_t vb0123c0 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
         const int8x8_t vb4567c0 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
@@ -137,6 +168,10 @@
         vacc1x0123 = vpadalq_s16(vacc1x0123, vprod1x0123c0);
         const int16x8_t vprod1x4567c0 = vmull_s8(vb4567c0, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va1), 0)));
         vacc1x4567 = vpadalq_s16(vacc1x4567, vprod1x4567c0);
+        const int16x8_t vprod2x0123c0 = vmull_s8(vb0123c0, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va2), 0)));
+        vacc2x0123 = vpadalq_s16(vacc2x0123, vprod2x0123c0);
+        const int16x8_t vprod2x4567c0 = vmull_s8(vb4567c0, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va2), 0)));
+        vacc2x4567 = vpadalq_s16(vacc2x4567, vprod2x4567c0);
 
         if (k > 2 * sizeof(int8_t)) {
           const int8x8_t vb0123c1 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
@@ -150,6 +185,10 @@
           vacc1x0123 = vpadalq_s16(vacc1x0123, vprod1x0123c1);
           const int16x8_t vprod1x4567c1 = vmull_s8(vb4567c1, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va1), 1)));
           vacc1x4567 = vpadalq_s16(vacc1x4567, vprod1x4567c1);
+          const int16x8_t vprod2x0123c1 = vmull_s8(vb0123c1, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va2), 1)));
+          vacc2x0123 = vpadalq_s16(vacc2x0123, vprod2x0123c1);
+          const int16x8_t vprod2x4567c1 = vmull_s8(vb4567c1, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va2), 1)));
+          vacc2x4567 = vpadalq_s16(vacc2x4567, vprod2x4567c1);
 
           if (k > 4 * sizeof(int8_t)) {
             const int8x8_t vb0123c2 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
@@ -163,6 +202,10 @@
             vacc1x0123 = vpadalq_s16(vacc1x0123, vprod1x0123c2);
             const int16x8_t vprod1x4567c2 = vmull_s8(vb4567c2, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va1), 2)));
             vacc1x4567 = vpadalq_s16(vacc1x4567, vprod1x4567c2);
+            const int16x8_t vprod2x0123c2 = vmull_s8(vb0123c2, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va2), 2)));
+            vacc2x0123 = vpadalq_s16(vacc2x0123, vprod2x0123c2);
+            const int16x8_t vprod2x4567c2 = vmull_s8(vb4567c2, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va2), 2)));
+            vacc2x4567 = vpadalq_s16(vacc2x4567, vprod2x4567c2);
 
             if (k > 6 * sizeof(int8_t)) {
               const int8x8_t vb0123c2 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
@@ -176,11 +219,15 @@
               vacc1x0123 = vpadalq_s16(vacc1x0123, vprod1x0123c2);
               const int16x8_t vprod1x4567c2 = vmull_s8(vb4567c2, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va1), 3)));
               vacc1x4567 = vpadalq_s16(vacc1x4567, vprod1x4567c2);
+              const int16x8_t vprod2x0123c2 = vmull_s8(vb0123c2, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va2), 3)));
+              vacc2x0123 = vpadalq_s16(vacc2x0123, vprod2x0123c2);
+              const int16x8_t vprod2x4567c2 = vmull_s8(vb4567c2, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va2), 3)));
+              vacc2x4567 = vpadalq_s16(vacc2x4567, vprod2x4567c2);
             }
           }
         }
       }
-      p -= 2 * sizeof(void*);
+      p -= 3 * sizeof(void*);
     } while (p != 0);
 
     const int32x4_t vright_pre_shift = vld1q_dup_s32(&params->rndnu_neon.right_pre_shift);
@@ -191,40 +238,54 @@
     vacc0x4567 = vshlq_s32(vacc0x4567, vright_pre_shift);
     vacc1x0123 = vshlq_s32(vacc1x0123, vright_pre_shift);
     vacc1x4567 = vshlq_s32(vacc1x4567, vright_pre_shift);
+    vacc2x0123 = vshlq_s32(vacc2x0123, vright_pre_shift);
+    vacc2x4567 = vshlq_s32(vacc2x4567, vright_pre_shift);
 
     vacc0x0123 = vqdmulhq_s32(vacc0x0123, vmultiplier);
     vacc0x4567 = vqdmulhq_s32(vacc0x4567, vmultiplier);
     vacc1x0123 = vqdmulhq_s32(vacc1x0123, vmultiplier);
     vacc1x4567 = vqdmulhq_s32(vacc1x4567, vmultiplier);
+    vacc2x0123 = vqdmulhq_s32(vacc2x0123, vmultiplier);
+    vacc2x4567 = vqdmulhq_s32(vacc2x4567, vmultiplier);
 
     vacc0x0123 = vrshlq_s32(vacc0x0123, vright_post_shift);
     vacc0x4567 = vrshlq_s32(vacc0x4567, vright_post_shift);
     vacc1x0123 = vrshlq_s32(vacc1x0123, vright_post_shift);
     vacc1x4567 = vrshlq_s32(vacc1x4567, vright_post_shift);
+    vacc2x0123 = vrshlq_s32(vacc2x0123, vright_post_shift);
+    vacc2x4567 = vrshlq_s32(vacc2x4567, vright_post_shift);
 
     const int16x8_t voutput_zero_point = vld1q_dup_s16(&params->rndnu_neon.output_zero_point);
 #if XNN_ARCH_ARM64
     const int16x8_t vacc0x01234567 = vqaddq_s16(vqmovn_high_s32(vqmovn_s32(vacc0x0123), vacc0x4567), voutput_zero_point);
     const int16x8_t vacc1x01234567 = vqaddq_s16(vqmovn_high_s32(vqmovn_s32(vacc1x0123), vacc1x4567), voutput_zero_point);
+    const int16x8_t vacc2x01234567 = vqaddq_s16(vqmovn_high_s32(vqmovn_s32(vacc2x0123), vacc2x4567), voutput_zero_point);
 
     int8x16_t vout0x01234567_1x01234567 = vqmovn_high_s16(vqmovn_s16(vacc0x01234567), vacc1x01234567);
+    int8x8_t vout2x01234567 = vqmovn_s16(vacc2x01234567);
 #else
     const int16x8_t vacc0x01234567 = vqaddq_s16(vcombine_s16(vqmovn_s32(vacc0x0123), vqmovn_s32(vacc0x4567)), voutput_zero_point);
     const int16x8_t vacc1x01234567 = vqaddq_s16(vcombine_s16(vqmovn_s32(vacc1x0123), vqmovn_s32(vacc1x4567)), voutput_zero_point);
+    const int16x8_t vacc2x01234567 = vqaddq_s16(vcombine_s16(vqmovn_s32(vacc2x0123), vqmovn_s32(vacc2x4567)), voutput_zero_point);
 
     int8x16_t vout0x01234567_1x01234567 = vcombine_s8(vqmovn_s16(vacc0x01234567), vqmovn_s16(vacc1x01234567));
+    int8x8_t vout2x01234567 = vqmovn_s16(vacc2x01234567);
 #endif
     const int8x16_t voutput_min = vld1q_dup_s8(&params->rndnu_neon.output_min);
     const int8x16_t voutput_max = vld1q_dup_s8(&params->rndnu_neon.output_max);
 
+    vout2x01234567 = vmax_s8(vout2x01234567, vget_low_s8(voutput_min));
     vout0x01234567_1x01234567 = vmaxq_s8(vout0x01234567_1x01234567, voutput_min);
 
+    vout2x01234567 = vmin_s8(vout2x01234567, vget_low_s8(voutput_max));
     vout0x01234567_1x01234567 = vminq_s8(vout0x01234567_1x01234567, voutput_max);
 
     if (nc >= 8) {
+      vst1_s8(c2 + 0, vout2x01234567);
       vst1_s8(c1 + 0, vget_high_s8(vout0x01234567_1x01234567));
       vst1_s8(c0 + 0, vget_low_s8(vout0x01234567_1x01234567));
 
+      c2 = (int8_t*) ((uintptr_t) c2 + cn_stride);
       c1 = (int8_t*) ((uintptr_t) c1 + cn_stride);
       c0 = (int8_t*) ((uintptr_t) c0 + cn_stride);
 
@@ -233,16 +294,21 @@
       nc -= 8;
     } else {
       if (nc & 4) {
+        vst1_lane_u32(__builtin_assume_aligned(c2, 1), vreinterpret_u32_s8(vout2x01234567), 0); c2 += 4;
         vst1q_lane_u32(__builtin_assume_aligned(c1, 1), vreinterpretq_u32_s8(vout0x01234567_1x01234567), 2); c1 += 4;
         vst1q_lane_u32(__builtin_assume_aligned(c0, 1), vreinterpretq_u32_s8(vout0x01234567_1x01234567), 0); c0 += 4;
+        vout2x01234567 = vext_s8(vout2x01234567, vout2x01234567, 4);
         vout0x01234567_1x01234567 = vextq_s8(vout0x01234567_1x01234567, vout0x01234567_1x01234567, 4);
       }
       if (nc & 2) {
+        vst1_lane_u16(__builtin_assume_aligned(c2, 1), vreinterpret_u16_s8(vout2x01234567), 0); c2 += 2;
         vst1q_lane_u16(__builtin_assume_aligned(c1, 1), vreinterpretq_u16_s8(vout0x01234567_1x01234567), 4); c1 += 2;
         vst1q_lane_u16(__builtin_assume_aligned(c0, 1), vreinterpretq_u16_s8(vout0x01234567_1x01234567), 0); c0 += 2;
+        vout2x01234567 = vext_s8(vout2x01234567, vout2x01234567, 2);
         vout0x01234567_1x01234567 = vextq_s8(vout0x01234567_1x01234567, vout0x01234567_1x01234567, 2);
       }
       if (nc & 1) {
+        vst1_lane_s8(c2, vout2x01234567, 0);
         vst1q_lane_s8(c1, vout0x01234567_1x01234567, 8);
         vst1q_lane_s8(c0, vout0x01234567_1x01234567, 0);
       }
diff --git a/src/qs8-igemm/gen/4x16c2s4-minmax-rndnu-neon-mlal-padal.c b/src/qs8-igemm/gen/4x16c2s4-minmax-rndnu-neon-mlal-padal.c
new file mode 100644
index 0000000..4236536
--- /dev/null
+++ b/src/qs8-igemm/gen/4x16c2s4-minmax-rndnu-neon-mlal-padal.c
@@ -0,0 +1,843 @@
+// Auto-generated file. Do not edit!
+//   Template: src/qs8-igemm/c2-neon-mull-padal-shuffle.c.in
+//   Generator: tools/xngen
+//
+// Copyright 2021 Google LLC
+//
+// This source code is licensed under the BSD-style license found in the
+// LICENSE file in the root directory of this source tree.
+
+#include <assert.h>
+
+#include <arm_neon.h>
+
+#include <xnnpack/gemm.h>
+#include <xnnpack/math.h>
+
+
+void xnn_qs8_igemm_minmax_rndnu_ukernel_4x16c2s4__neon_mlal_padal(
+    size_t mr,
+    size_t nc,
+    size_t kc,
+    size_t ks,
+    const int8_t** restrict a,
+    const void* restrict w,
+    int8_t* restrict c,
+    size_t cm_stride,
+    size_t cn_stride,
+    size_t a_offset,
+    const int8_t* zero,
+    const union xnn_qs8_conv_minmax_params params[restrict XNN_MIN_ELEMENTS(1)]) XNN_DISABLE_TSAN XNN_DISABLE_MSAN
+{
+  assert(mr != 0);
+  assert(mr <= 4);
+  assert(nc != 0);
+  assert(kc != 0);
+  assert(ks != 0);
+  assert(ks % (4 * sizeof(void*)) == 0);
+  assert(a_offset % sizeof(int8_t) == 0);
+  assert(a != NULL);
+  assert(w != NULL);
+  assert(c != NULL);
+
+  int8_t* c0 = c;
+  int8_t* c1 = (int8_t*) ((uintptr_t) c0 + cm_stride);
+  if XNN_UNPREDICTABLE(mr < 2) {
+    c1 = c0;
+  }
+  int8_t* c2 = (int8_t*) ((uintptr_t) c1 + cm_stride);
+  if XNN_UNPREDICTABLE(mr <= 2) {
+    c2 = c1;
+  }
+  int8_t* c3 = (int8_t*) ((uintptr_t) c2 + cm_stride);
+  if XNN_UNPREDICTABLE(mr != 4) {
+    c3 = c2;
+  }
+
+  do {
+    int32x4_t vacc0x0123 = vld1q_s32(w); w = (const void*) ((uintptr_t) w + 4 * sizeof(int32_t));
+    int32x4_t vacc0x4567 = vld1q_s32(w); w = (const void*) ((uintptr_t) w + 4 * sizeof(int32_t));
+    int32x4_t vacc0x89AB = vld1q_s32(w); w = (const void*) ((uintptr_t) w + 4 * sizeof(int32_t));
+    int32x4_t vacc0xCDEF = vld1q_s32(w); w = (const void*) ((uintptr_t) w + 4 * sizeof(int32_t));
+    int32x4_t vacc1x0123 = vacc0x0123;
+    int32x4_t vacc1x4567 = vacc0x4567;
+    int32x4_t vacc1x89AB = vacc0x89AB;
+    int32x4_t vacc1xCDEF = vacc0xCDEF;
+    int32x4_t vacc2x0123 = vacc0x0123;
+    int32x4_t vacc2x4567 = vacc0x4567;
+    int32x4_t vacc2x89AB = vacc0x89AB;
+    int32x4_t vacc2xCDEF = vacc0xCDEF;
+    int32x4_t vacc3x0123 = vacc0x0123;
+    int32x4_t vacc3x4567 = vacc0x4567;
+    int32x4_t vacc3x89AB = vacc0x89AB;
+    int32x4_t vacc3xCDEF = vacc0xCDEF;
+
+    size_t p = ks;
+    do {
+      const int8_t* restrict a0 = a[0];
+      if XNN_UNPREDICTABLE(a0 != zero) {
+        a0 = (const int8_t*) ((uintptr_t) a0 + a_offset);
+      }
+      const int8_t* restrict a1 = a[1];
+      if XNN_UNPREDICTABLE(a1 != zero) {
+        a1 = (const int8_t*) ((uintptr_t) a1 + a_offset);
+      }
+      const int8_t* restrict a2 = a[2];
+      if XNN_UNPREDICTABLE(a2 != zero) {
+        a2 = (const int8_t*) ((uintptr_t) a2 + a_offset);
+      }
+      const int8_t* restrict a3 = a[3];
+      if XNN_UNPREDICTABLE(a3 != zero) {
+        a3 = (const int8_t*) ((uintptr_t) a3 + a_offset);
+      }
+      a += 4;
+
+      size_t k = kc;
+
+      while (k >= 16 * sizeof(int8_t)) {
+        int8x8_t va0x0 = vld1_s8(a0); a0 += 8;
+        int8x8_t va0x1 = vld1_s8(a0); a0 += 8;
+        int8x8_t va1x0 = vld1_s8(a1); a1 += 8;
+        int8x8_t va1x1 = vld1_s8(a1); a1 += 8;
+        int8x8_t va2x0 = vld1_s8(a2); a2 += 8;
+        int8x8_t va2x1 = vld1_s8(a2); a2 += 8;
+        int8x8_t va3x0 = vld1_s8(a3); a3 += 8;
+        int8x8_t va3x1 = vld1_s8(a3); a3 += 8;
+
+        const int8x8_t vb0123c0x0 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+        const int8x8_t vb4567c0x0 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+        const int8x8_t vb89ABc0x0 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+        const int8x8_t vbCDEFc0x0 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+        const int8x8_t vb0123c1x0 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+        const int8x8_t vb4567c1x0 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+        const int8x8_t vb89ABc1x0 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+        const int8x8_t vbCDEFc1x0 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+        const int8x8_t vb0123c2x0 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+        const int8x8_t vb4567c2x0 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+        const int8x8_t vb89ABc2x0 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+        const int8x8_t vbCDEFc2x0 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+        const int8x8_t vb0123c3x0 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+        const int8x8_t vb4567c3x0 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+        const int8x8_t vb89ABc3x0 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+        const int8x8_t vbCDEFc3x0 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+
+        int16x8_t vprod0x0123c0 = vmull_s8(vb0123c0x0, va0x0);
+        int16x8_t vprod1x0123c0 = vmull_s8(vb0123c0x0, va1x0);
+        int16x8_t vprod2x0123c0 = vmull_s8(vb0123c0x0, va2x0);
+        int16x8_t vprod3x0123c0 = vmull_s8(vb0123c0x0, va3x0);
+        const int8x8_t vb0123c0x1 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+        vprod0x0123c0 = vmlal_s8(vprod0x0123c0, vb0123c0x1, va0x1);
+        vprod1x0123c0 = vmlal_s8(vprod1x0123c0, vb0123c0x1, va1x1);
+        vprod2x0123c0 = vmlal_s8(vprod2x0123c0, vb0123c0x1, va2x1);
+        vprod3x0123c0 = vmlal_s8(vprod3x0123c0, vb0123c0x1, va3x1);
+        vacc0x0123 = vpadalq_s16(vacc0x0123, vprod0x0123c0);
+        vacc1x0123 = vpadalq_s16(vacc1x0123, vprod1x0123c0);
+        vacc2x0123 = vpadalq_s16(vacc2x0123, vprod2x0123c0);
+        vacc3x0123 = vpadalq_s16(vacc3x0123, vprod3x0123c0);
+        int16x8_t vprod0x4567c0 = vmull_s8(vb4567c0x0, va0x0);
+        int16x8_t vprod1x4567c0 = vmull_s8(vb4567c0x0, va1x0);
+        int16x8_t vprod2x4567c0 = vmull_s8(vb4567c0x0, va2x0);
+        int16x8_t vprod3x4567c0 = vmull_s8(vb4567c0x0, va3x0);
+        const int8x8_t vb4567c0x1 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+        vprod0x4567c0 = vmlal_s8(vprod0x4567c0, vb4567c0x1, va0x1);
+        vprod1x4567c0 = vmlal_s8(vprod1x4567c0, vb4567c0x1, va1x1);
+        vprod2x4567c0 = vmlal_s8(vprod2x4567c0, vb4567c0x1, va2x1);
+        vprod3x4567c0 = vmlal_s8(vprod3x4567c0, vb4567c0x1, va3x1);
+        vacc0x4567 = vpadalq_s16(vacc0x4567, vprod0x4567c0);
+        vacc1x4567 = vpadalq_s16(vacc1x4567, vprod1x4567c0);
+        vacc2x4567 = vpadalq_s16(vacc2x4567, vprod2x4567c0);
+        vacc3x4567 = vpadalq_s16(vacc3x4567, vprod3x4567c0);
+        int16x8_t vprod0x89ABc0 = vmull_s8(vb89ABc0x0, va0x0);
+        int16x8_t vprod1x89ABc0 = vmull_s8(vb89ABc0x0, va1x0);
+        int16x8_t vprod2x89ABc0 = vmull_s8(vb89ABc0x0, va2x0);
+        int16x8_t vprod3x89ABc0 = vmull_s8(vb89ABc0x0, va3x0);
+        const int8x8_t vb89ABc0x1 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+        vprod0x89ABc0 = vmlal_s8(vprod0x89ABc0, vb89ABc0x1, va0x1);
+        vprod1x89ABc0 = vmlal_s8(vprod1x89ABc0, vb89ABc0x1, va1x1);
+        vprod2x89ABc0 = vmlal_s8(vprod2x89ABc0, vb89ABc0x1, va2x1);
+        vprod3x89ABc0 = vmlal_s8(vprod3x89ABc0, vb89ABc0x1, va3x1);
+        vacc0x89AB = vpadalq_s16(vacc0x89AB, vprod0x89ABc0);
+        vacc1x89AB = vpadalq_s16(vacc1x89AB, vprod1x89ABc0);
+        vacc2x89AB = vpadalq_s16(vacc2x89AB, vprod2x89ABc0);
+        vacc3x89AB = vpadalq_s16(vacc3x89AB, vprod3x89ABc0);
+        int16x8_t vprod0xCDEFc0 = vmull_s8(vbCDEFc0x0, va0x0);
+        int16x8_t vprod1xCDEFc0 = vmull_s8(vbCDEFc0x0, va1x0);
+        int16x8_t vprod2xCDEFc0 = vmull_s8(vbCDEFc0x0, va2x0);
+        int16x8_t vprod3xCDEFc0 = vmull_s8(vbCDEFc0x0, va3x0);
+        const int8x8_t vbCDEFc0x1 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+        vprod0xCDEFc0 = vmlal_s8(vprod0xCDEFc0, vbCDEFc0x1, va0x1);
+        vprod1xCDEFc0 = vmlal_s8(vprod1xCDEFc0, vbCDEFc0x1, va1x1);
+        vprod2xCDEFc0 = vmlal_s8(vprod2xCDEFc0, vbCDEFc0x1, va2x1);
+        vprod3xCDEFc0 = vmlal_s8(vprod3xCDEFc0, vbCDEFc0x1, va3x1);
+        vacc0xCDEF = vpadalq_s16(vacc0xCDEF, vprod0xCDEFc0);
+        vacc1xCDEF = vpadalq_s16(vacc1xCDEF, vprod1xCDEFc0);
+        vacc2xCDEF = vpadalq_s16(vacc2xCDEF, vprod2xCDEFc0);
+        vacc3xCDEF = vpadalq_s16(vacc3xCDEF, vprod3xCDEFc0);
+        va0x0 = vext_s8(va0x0, va0x0, 2);
+        va0x1 = vext_s8(va0x1, va0x1, 2);
+        va1x0 = vext_s8(va1x0, va1x0, 2);
+        va1x1 = vext_s8(va1x1, va1x1, 2);
+        va2x0 = vext_s8(va2x0, va2x0, 2);
+        va2x1 = vext_s8(va2x1, va2x1, 2);
+        va3x0 = vext_s8(va3x0, va3x0, 2);
+        va3x1 = vext_s8(va3x1, va3x1, 2);
+        int16x8_t vprod0x0123c1 = vmull_s8(vb0123c1x0, va0x0);
+        int16x8_t vprod1x0123c1 = vmull_s8(vb0123c1x0, va1x0);
+        int16x8_t vprod2x0123c1 = vmull_s8(vb0123c1x0, va2x0);
+        int16x8_t vprod3x0123c1 = vmull_s8(vb0123c1x0, va3x0);
+        const int8x8_t vb0123c1x1 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+        vprod0x0123c1 = vmlal_s8(vprod0x0123c1, vb0123c1x1, va0x1);
+        vprod1x0123c1 = vmlal_s8(vprod1x0123c1, vb0123c1x1, va1x1);
+        vprod2x0123c1 = vmlal_s8(vprod2x0123c1, vb0123c1x1, va2x1);
+        vprod3x0123c1 = vmlal_s8(vprod3x0123c1, vb0123c1x1, va3x1);
+        vacc0x0123 = vpadalq_s16(vacc0x0123, vprod0x0123c1);
+        vacc1x0123 = vpadalq_s16(vacc1x0123, vprod1x0123c1);
+        vacc2x0123 = vpadalq_s16(vacc2x0123, vprod2x0123c1);
+        vacc3x0123 = vpadalq_s16(vacc3x0123, vprod3x0123c1);
+        int16x8_t vprod0x4567c1 = vmull_s8(vb4567c1x0, va0x0);
+        int16x8_t vprod1x4567c1 = vmull_s8(vb4567c1x0, va1x0);
+        int16x8_t vprod2x4567c1 = vmull_s8(vb4567c1x0, va2x0);
+        int16x8_t vprod3x4567c1 = vmull_s8(vb4567c1x0, va3x0);
+        const int8x8_t vb4567c1x1 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+        vprod0x4567c1 = vmlal_s8(vprod0x4567c1, vb4567c1x1, va0x1);
+        vprod1x4567c1 = vmlal_s8(vprod1x4567c1, vb4567c1x1, va1x1);
+        vprod2x4567c1 = vmlal_s8(vprod2x4567c1, vb4567c1x1, va2x1);
+        vprod3x4567c1 = vmlal_s8(vprod3x4567c1, vb4567c1x1, va3x1);
+        vacc0x4567 = vpadalq_s16(vacc0x4567, vprod0x4567c1);
+        vacc1x4567 = vpadalq_s16(vacc1x4567, vprod1x4567c1);
+        vacc2x4567 = vpadalq_s16(vacc2x4567, vprod2x4567c1);
+        vacc3x4567 = vpadalq_s16(vacc3x4567, vprod3x4567c1);
+        int16x8_t vprod0x89ABc1 = vmull_s8(vb89ABc1x0, va0x0);
+        int16x8_t vprod1x89ABc1 = vmull_s8(vb89ABc1x0, va1x0);
+        int16x8_t vprod2x89ABc1 = vmull_s8(vb89ABc1x0, va2x0);
+        int16x8_t vprod3x89ABc1 = vmull_s8(vb89ABc1x0, va3x0);
+        const int8x8_t vb89ABc1x1 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+        vprod0x89ABc1 = vmlal_s8(vprod0x89ABc1, vb89ABc1x1, va0x1);
+        vprod1x89ABc1 = vmlal_s8(vprod1x89ABc1, vb89ABc1x1, va1x1);
+        vprod2x89ABc1 = vmlal_s8(vprod2x89ABc1, vb89ABc1x1, va2x1);
+        vprod3x89ABc1 = vmlal_s8(vprod3x89ABc1, vb89ABc1x1, va3x1);
+        vacc0x89AB = vpadalq_s16(vacc0x89AB, vprod0x89ABc1);
+        vacc1x89AB = vpadalq_s16(vacc1x89AB, vprod1x89ABc1);
+        vacc2x89AB = vpadalq_s16(vacc2x89AB, vprod2x89ABc1);
+        vacc3x89AB = vpadalq_s16(vacc3x89AB, vprod3x89ABc1);
+        int16x8_t vprod0xCDEFc1 = vmull_s8(vbCDEFc1x0, va0x0);
+        int16x8_t vprod1xCDEFc1 = vmull_s8(vbCDEFc1x0, va1x0);
+        int16x8_t vprod2xCDEFc1 = vmull_s8(vbCDEFc1x0, va2x0);
+        int16x8_t vprod3xCDEFc1 = vmull_s8(vbCDEFc1x0, va3x0);
+        const int8x8_t vbCDEFc1x1 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+        vprod0xCDEFc1 = vmlal_s8(vprod0xCDEFc1, vbCDEFc1x1, va0x1);
+        vprod1xCDEFc1 = vmlal_s8(vprod1xCDEFc1, vbCDEFc1x1, va1x1);
+        vprod2xCDEFc1 = vmlal_s8(vprod2xCDEFc1, vbCDEFc1x1, va2x1);
+        vprod3xCDEFc1 = vmlal_s8(vprod3xCDEFc1, vbCDEFc1x1, va3x1);
+        vacc0xCDEF = vpadalq_s16(vacc0xCDEF, vprod0xCDEFc1);
+        vacc1xCDEF = vpadalq_s16(vacc1xCDEF, vprod1xCDEFc1);
+        vacc2xCDEF = vpadalq_s16(vacc2xCDEF, vprod2xCDEFc1);
+        vacc3xCDEF = vpadalq_s16(vacc3xCDEF, vprod3xCDEFc1);
+        va0x0 = vext_s8(va0x0, va0x0, 2);
+        va0x1 = vext_s8(va0x1, va0x1, 2);
+        va1x0 = vext_s8(va1x0, va1x0, 2);
+        va1x1 = vext_s8(va1x1, va1x1, 2);
+        va2x0 = vext_s8(va2x0, va2x0, 2);
+        va2x1 = vext_s8(va2x1, va2x1, 2);
+        va3x0 = vext_s8(va3x0, va3x0, 2);
+        va3x1 = vext_s8(va3x1, va3x1, 2);
+        int16x8_t vprod0x0123c2 = vmull_s8(vb0123c2x0, va0x0);
+        int16x8_t vprod1x0123c2 = vmull_s8(vb0123c2x0, va1x0);
+        int16x8_t vprod2x0123c2 = vmull_s8(vb0123c2x0, va2x0);
+        int16x8_t vprod3x0123c2 = vmull_s8(vb0123c2x0, va3x0);
+        const int8x8_t vb0123c2x1 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+        vprod0x0123c2 = vmlal_s8(vprod0x0123c2, vb0123c2x1, va0x1);
+        vprod1x0123c2 = vmlal_s8(vprod1x0123c2, vb0123c2x1, va1x1);
+        vprod2x0123c2 = vmlal_s8(vprod2x0123c2, vb0123c2x1, va2x1);
+        vprod3x0123c2 = vmlal_s8(vprod3x0123c2, vb0123c2x1, va3x1);
+        vacc0x0123 = vpadalq_s16(vacc0x0123, vprod0x0123c2);
+        vacc1x0123 = vpadalq_s16(vacc1x0123, vprod1x0123c2);
+        vacc2x0123 = vpadalq_s16(vacc2x0123, vprod2x0123c2);
+        vacc3x0123 = vpadalq_s16(vacc3x0123, vprod3x0123c2);
+        int16x8_t vprod0x4567c2 = vmull_s8(vb4567c2x0, va0x0);
+        int16x8_t vprod1x4567c2 = vmull_s8(vb4567c2x0, va1x0);
+        int16x8_t vprod2x4567c2 = vmull_s8(vb4567c2x0, va2x0);
+        int16x8_t vprod3x4567c2 = vmull_s8(vb4567c2x0, va3x0);
+        const int8x8_t vb4567c2x1 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+        vprod0x4567c2 = vmlal_s8(vprod0x4567c2, vb4567c2x1, va0x1);
+        vprod1x4567c2 = vmlal_s8(vprod1x4567c2, vb4567c2x1, va1x1);
+        vprod2x4567c2 = vmlal_s8(vprod2x4567c2, vb4567c2x1, va2x1);
+        vprod3x4567c2 = vmlal_s8(vprod3x4567c2, vb4567c2x1, va3x1);
+        vacc0x4567 = vpadalq_s16(vacc0x4567, vprod0x4567c2);
+        vacc1x4567 = vpadalq_s16(vacc1x4567, vprod1x4567c2);
+        vacc2x4567 = vpadalq_s16(vacc2x4567, vprod2x4567c2);
+        vacc3x4567 = vpadalq_s16(vacc3x4567, vprod3x4567c2);
+        int16x8_t vprod0x89ABc2 = vmull_s8(vb89ABc2x0, va0x0);
+        int16x8_t vprod1x89ABc2 = vmull_s8(vb89ABc2x0, va1x0);
+        int16x8_t vprod2x89ABc2 = vmull_s8(vb89ABc2x0, va2x0);
+        int16x8_t vprod3x89ABc2 = vmull_s8(vb89ABc2x0, va3x0);
+        const int8x8_t vb89ABc2x1 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+        vprod0x89ABc2 = vmlal_s8(vprod0x89ABc2, vb89ABc2x1, va0x1);
+        vprod1x89ABc2 = vmlal_s8(vprod1x89ABc2, vb89ABc2x1, va1x1);
+        vprod2x89ABc2 = vmlal_s8(vprod2x89ABc2, vb89ABc2x1, va2x1);
+        vprod3x89ABc2 = vmlal_s8(vprod3x89ABc2, vb89ABc2x1, va3x1);
+        vacc0x89AB = vpadalq_s16(vacc0x89AB, vprod0x89ABc2);
+        vacc1x89AB = vpadalq_s16(vacc1x89AB, vprod1x89ABc2);
+        vacc2x89AB = vpadalq_s16(vacc2x89AB, vprod2x89ABc2);
+        vacc3x89AB = vpadalq_s16(vacc3x89AB, vprod3x89ABc2);
+        int16x8_t vprod0xCDEFc2 = vmull_s8(vbCDEFc2x0, va0x0);
+        int16x8_t vprod1xCDEFc2 = vmull_s8(vbCDEFc2x0, va1x0);
+        int16x8_t vprod2xCDEFc2 = vmull_s8(vbCDEFc2x0, va2x0);
+        int16x8_t vprod3xCDEFc2 = vmull_s8(vbCDEFc2x0, va3x0);
+        const int8x8_t vbCDEFc2x1 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+        vprod0xCDEFc2 = vmlal_s8(vprod0xCDEFc2, vbCDEFc2x1, va0x1);
+        vprod1xCDEFc2 = vmlal_s8(vprod1xCDEFc2, vbCDEFc2x1, va1x1);
+        vprod2xCDEFc2 = vmlal_s8(vprod2xCDEFc2, vbCDEFc2x1, va2x1);
+        vprod3xCDEFc2 = vmlal_s8(vprod3xCDEFc2, vbCDEFc2x1, va3x1);
+        vacc0xCDEF = vpadalq_s16(vacc0xCDEF, vprod0xCDEFc2);
+        vacc1xCDEF = vpadalq_s16(vacc1xCDEF, vprod1xCDEFc2);
+        vacc2xCDEF = vpadalq_s16(vacc2xCDEF, vprod2xCDEFc2);
+        vacc3xCDEF = vpadalq_s16(vacc3xCDEF, vprod3xCDEFc2);
+        va0x0 = vext_s8(va0x0, va0x0, 2);
+        va0x1 = vext_s8(va0x1, va0x1, 2);
+        va1x0 = vext_s8(va1x0, va1x0, 2);
+        va1x1 = vext_s8(va1x1, va1x1, 2);
+        va2x0 = vext_s8(va2x0, va2x0, 2);
+        va2x1 = vext_s8(va2x1, va2x1, 2);
+        va3x0 = vext_s8(va3x0, va3x0, 2);
+        va3x1 = vext_s8(va3x1, va3x1, 2);
+        int16x8_t vprod0x0123c3 = vmull_s8(vb0123c3x0, va0x0);
+        int16x8_t vprod1x0123c3 = vmull_s8(vb0123c3x0, va1x0);
+        int16x8_t vprod2x0123c3 = vmull_s8(vb0123c3x0, va2x0);
+        int16x8_t vprod3x0123c3 = vmull_s8(vb0123c3x0, va3x0);
+        const int8x8_t vb0123c3x1 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+        vprod0x0123c3 = vmlal_s8(vprod0x0123c3, vb0123c3x1, va0x1);
+        vprod1x0123c3 = vmlal_s8(vprod1x0123c3, vb0123c3x1, va1x1);
+        vprod2x0123c3 = vmlal_s8(vprod2x0123c3, vb0123c3x1, va2x1);
+        vprod3x0123c3 = vmlal_s8(vprod3x0123c3, vb0123c3x1, va3x1);
+        vacc0x0123 = vpadalq_s16(vacc0x0123, vprod0x0123c3);
+        vacc1x0123 = vpadalq_s16(vacc1x0123, vprod1x0123c3);
+        vacc2x0123 = vpadalq_s16(vacc2x0123, vprod2x0123c3);
+        vacc3x0123 = vpadalq_s16(vacc3x0123, vprod3x0123c3);
+        int16x8_t vprod0x4567c3 = vmull_s8(vb4567c3x0, va0x0);
+        int16x8_t vprod1x4567c3 = vmull_s8(vb4567c3x0, va1x0);
+        int16x8_t vprod2x4567c3 = vmull_s8(vb4567c3x0, va2x0);
+        int16x8_t vprod3x4567c3 = vmull_s8(vb4567c3x0, va3x0);
+        const int8x8_t vb4567c3x1 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+        vprod0x4567c3 = vmlal_s8(vprod0x4567c3, vb4567c3x1, va0x1);
+        vprod1x4567c3 = vmlal_s8(vprod1x4567c3, vb4567c3x1, va1x1);
+        vprod2x4567c3 = vmlal_s8(vprod2x4567c3, vb4567c3x1, va2x1);
+        vprod3x4567c3 = vmlal_s8(vprod3x4567c3, vb4567c3x1, va3x1);
+        vacc0x4567 = vpadalq_s16(vacc0x4567, vprod0x4567c3);
+        vacc1x4567 = vpadalq_s16(vacc1x4567, vprod1x4567c3);
+        vacc2x4567 = vpadalq_s16(vacc2x4567, vprod2x4567c3);
+        vacc3x4567 = vpadalq_s16(vacc3x4567, vprod3x4567c3);
+        int16x8_t vprod0x89ABc3 = vmull_s8(vb89ABc3x0, va0x0);
+        int16x8_t vprod1x89ABc3 = vmull_s8(vb89ABc3x0, va1x0);
+        int16x8_t vprod2x89ABc3 = vmull_s8(vb89ABc3x0, va2x0);
+        int16x8_t vprod3x89ABc3 = vmull_s8(vb89ABc3x0, va3x0);
+        const int8x8_t vb89ABc3x1 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+        vprod0x89ABc3 = vmlal_s8(vprod0x89ABc3, vb89ABc3x1, va0x1);
+        vprod1x89ABc3 = vmlal_s8(vprod1x89ABc3, vb89ABc3x1, va1x1);
+        vprod2x89ABc3 = vmlal_s8(vprod2x89ABc3, vb89ABc3x1, va2x1);
+        vprod3x89ABc3 = vmlal_s8(vprod3x89ABc3, vb89ABc3x1, va3x1);
+        vacc0x89AB = vpadalq_s16(vacc0x89AB, vprod0x89ABc3);
+        vacc1x89AB = vpadalq_s16(vacc1x89AB, vprod1x89ABc3);
+        vacc2x89AB = vpadalq_s16(vacc2x89AB, vprod2x89ABc3);
+        vacc3x89AB = vpadalq_s16(vacc3x89AB, vprod3x89ABc3);
+        int16x8_t vprod0xCDEFc3 = vmull_s8(vbCDEFc3x0, va0x0);
+        int16x8_t vprod1xCDEFc3 = vmull_s8(vbCDEFc3x0, va1x0);
+        int16x8_t vprod2xCDEFc3 = vmull_s8(vbCDEFc3x0, va2x0);
+        int16x8_t vprod3xCDEFc3 = vmull_s8(vbCDEFc3x0, va3x0);
+        const int8x8_t vbCDEFc3x1 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+        vprod0xCDEFc3 = vmlal_s8(vprod0xCDEFc3, vbCDEFc3x1, va0x1);
+        vprod1xCDEFc3 = vmlal_s8(vprod1xCDEFc3, vbCDEFc3x1, va1x1);
+        vprod2xCDEFc3 = vmlal_s8(vprod2xCDEFc3, vbCDEFc3x1, va2x1);
+        vprod3xCDEFc3 = vmlal_s8(vprod3xCDEFc3, vbCDEFc3x1, va3x1);
+        vacc0xCDEF = vpadalq_s16(vacc0xCDEF, vprod0xCDEFc3);
+        vacc1xCDEF = vpadalq_s16(vacc1xCDEF, vprod1xCDEFc3);
+        vacc2xCDEF = vpadalq_s16(vacc2xCDEF, vprod2xCDEFc3);
+        vacc3xCDEF = vpadalq_s16(vacc3xCDEF, vprod3xCDEFc3);
+
+        k -= 16 * sizeof(int8_t);
+      }
+
+      if (k >= 8 * sizeof(int8_t)) {
+        int8x8_t va0x0 = vld1_s8(a0); a0 += 8;
+        int8x8_t va1x0 = vld1_s8(a1); a1 += 8;
+        int8x8_t va2x0 = vld1_s8(a2); a2 += 8;
+        int8x8_t va3x0 = vld1_s8(a3); a3 += 8;
+
+        const int8x8_t vb0123c0x0 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+        const int8x8_t vb4567c0x0 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+        const int8x8_t vb89ABc0x0 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+        const int8x8_t vbCDEFc0x0 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+        const int8x8_t vb0123c1x0 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+        const int8x8_t vb4567c1x0 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+        const int8x8_t vb89ABc1x0 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+        const int8x8_t vbCDEFc1x0 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+        const int8x8_t vb0123c2x0 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+        const int8x8_t vb4567c2x0 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+        const int8x8_t vb89ABc2x0 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+        const int8x8_t vbCDEFc2x0 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+        const int8x8_t vb0123c3x0 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+        const int8x8_t vb4567c3x0 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+        const int8x8_t vb89ABc3x0 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+        const int8x8_t vbCDEFc3x0 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+
+        int16x8_t vprod0x0123c0 = vmull_s8(vb0123c0x0, va0x0);
+        int16x8_t vprod1x0123c0 = vmull_s8(vb0123c0x0, va1x0);
+        int16x8_t vprod2x0123c0 = vmull_s8(vb0123c0x0, va2x0);
+        int16x8_t vprod3x0123c0 = vmull_s8(vb0123c0x0, va3x0);
+        vacc0x0123 = vpadalq_s16(vacc0x0123, vprod0x0123c0);
+        vacc1x0123 = vpadalq_s16(vacc1x0123, vprod1x0123c0);
+        vacc2x0123 = vpadalq_s16(vacc2x0123, vprod2x0123c0);
+        vacc3x0123 = vpadalq_s16(vacc3x0123, vprod3x0123c0);
+        int16x8_t vprod0x4567c0 = vmull_s8(vb4567c0x0, va0x0);
+        int16x8_t vprod1x4567c0 = vmull_s8(vb4567c0x0, va1x0);
+        int16x8_t vprod2x4567c0 = vmull_s8(vb4567c0x0, va2x0);
+        int16x8_t vprod3x4567c0 = vmull_s8(vb4567c0x0, va3x0);
+        vacc0x4567 = vpadalq_s16(vacc0x4567, vprod0x4567c0);
+        vacc1x4567 = vpadalq_s16(vacc1x4567, vprod1x4567c0);
+        vacc2x4567 = vpadalq_s16(vacc2x4567, vprod2x4567c0);
+        vacc3x4567 = vpadalq_s16(vacc3x4567, vprod3x4567c0);
+        int16x8_t vprod0x89ABc0 = vmull_s8(vb89ABc0x0, va0x0);
+        int16x8_t vprod1x89ABc0 = vmull_s8(vb89ABc0x0, va1x0);
+        int16x8_t vprod2x89ABc0 = vmull_s8(vb89ABc0x0, va2x0);
+        int16x8_t vprod3x89ABc0 = vmull_s8(vb89ABc0x0, va3x0);
+        vacc0x89AB = vpadalq_s16(vacc0x89AB, vprod0x89ABc0);
+        vacc1x89AB = vpadalq_s16(vacc1x89AB, vprod1x89ABc0);
+        vacc2x89AB = vpadalq_s16(vacc2x89AB, vprod2x89ABc0);
+        vacc3x89AB = vpadalq_s16(vacc3x89AB, vprod3x89ABc0);
+        int16x8_t vprod0xCDEFc0 = vmull_s8(vbCDEFc0x0, va0x0);
+        int16x8_t vprod1xCDEFc0 = vmull_s8(vbCDEFc0x0, va1x0);
+        int16x8_t vprod2xCDEFc0 = vmull_s8(vbCDEFc0x0, va2x0);
+        int16x8_t vprod3xCDEFc0 = vmull_s8(vbCDEFc0x0, va3x0);
+        vacc0xCDEF = vpadalq_s16(vacc0xCDEF, vprod0xCDEFc0);
+        vacc1xCDEF = vpadalq_s16(vacc1xCDEF, vprod1xCDEFc0);
+        vacc2xCDEF = vpadalq_s16(vacc2xCDEF, vprod2xCDEFc0);
+        vacc3xCDEF = vpadalq_s16(vacc3xCDEF, vprod3xCDEFc0);
+        va0x0 = vext_s8(va0x0, va0x0, 2);
+        va1x0 = vext_s8(va1x0, va1x0, 2);
+        va2x0 = vext_s8(va2x0, va2x0, 2);
+        va3x0 = vext_s8(va3x0, va3x0, 2);
+        int16x8_t vprod0x0123c1 = vmull_s8(vb0123c1x0, va0x0);
+        int16x8_t vprod1x0123c1 = vmull_s8(vb0123c1x0, va1x0);
+        int16x8_t vprod2x0123c1 = vmull_s8(vb0123c1x0, va2x0);
+        int16x8_t vprod3x0123c1 = vmull_s8(vb0123c1x0, va3x0);
+        vacc0x0123 = vpadalq_s16(vacc0x0123, vprod0x0123c1);
+        vacc1x0123 = vpadalq_s16(vacc1x0123, vprod1x0123c1);
+        vacc2x0123 = vpadalq_s16(vacc2x0123, vprod2x0123c1);
+        vacc3x0123 = vpadalq_s16(vacc3x0123, vprod3x0123c1);
+        int16x8_t vprod0x4567c1 = vmull_s8(vb4567c1x0, va0x0);
+        int16x8_t vprod1x4567c1 = vmull_s8(vb4567c1x0, va1x0);
+        int16x8_t vprod2x4567c1 = vmull_s8(vb4567c1x0, va2x0);
+        int16x8_t vprod3x4567c1 = vmull_s8(vb4567c1x0, va3x0);
+        vacc0x4567 = vpadalq_s16(vacc0x4567, vprod0x4567c1);
+        vacc1x4567 = vpadalq_s16(vacc1x4567, vprod1x4567c1);
+        vacc2x4567 = vpadalq_s16(vacc2x4567, vprod2x4567c1);
+        vacc3x4567 = vpadalq_s16(vacc3x4567, vprod3x4567c1);
+        int16x8_t vprod0x89ABc1 = vmull_s8(vb89ABc1x0, va0x0);
+        int16x8_t vprod1x89ABc1 = vmull_s8(vb89ABc1x0, va1x0);
+        int16x8_t vprod2x89ABc1 = vmull_s8(vb89ABc1x0, va2x0);
+        int16x8_t vprod3x89ABc1 = vmull_s8(vb89ABc1x0, va3x0);
+        vacc0x89AB = vpadalq_s16(vacc0x89AB, vprod0x89ABc1);
+        vacc1x89AB = vpadalq_s16(vacc1x89AB, vprod1x89ABc1);
+        vacc2x89AB = vpadalq_s16(vacc2x89AB, vprod2x89ABc1);
+        vacc3x89AB = vpadalq_s16(vacc3x89AB, vprod3x89ABc1);
+        int16x8_t vprod0xCDEFc1 = vmull_s8(vbCDEFc1x0, va0x0);
+        int16x8_t vprod1xCDEFc1 = vmull_s8(vbCDEFc1x0, va1x0);
+        int16x8_t vprod2xCDEFc1 = vmull_s8(vbCDEFc1x0, va2x0);
+        int16x8_t vprod3xCDEFc1 = vmull_s8(vbCDEFc1x0, va3x0);
+        vacc0xCDEF = vpadalq_s16(vacc0xCDEF, vprod0xCDEFc1);
+        vacc1xCDEF = vpadalq_s16(vacc1xCDEF, vprod1xCDEFc1);
+        vacc2xCDEF = vpadalq_s16(vacc2xCDEF, vprod2xCDEFc1);
+        vacc3xCDEF = vpadalq_s16(vacc3xCDEF, vprod3xCDEFc1);
+        va0x0 = vext_s8(va0x0, va0x0, 2);
+        va1x0 = vext_s8(va1x0, va1x0, 2);
+        va2x0 = vext_s8(va2x0, va2x0, 2);
+        va3x0 = vext_s8(va3x0, va3x0, 2);
+        int16x8_t vprod0x0123c2 = vmull_s8(vb0123c2x0, va0x0);
+        int16x8_t vprod1x0123c2 = vmull_s8(vb0123c2x0, va1x0);
+        int16x8_t vprod2x0123c2 = vmull_s8(vb0123c2x0, va2x0);
+        int16x8_t vprod3x0123c2 = vmull_s8(vb0123c2x0, va3x0);
+        vacc0x0123 = vpadalq_s16(vacc0x0123, vprod0x0123c2);
+        vacc1x0123 = vpadalq_s16(vacc1x0123, vprod1x0123c2);
+        vacc2x0123 = vpadalq_s16(vacc2x0123, vprod2x0123c2);
+        vacc3x0123 = vpadalq_s16(vacc3x0123, vprod3x0123c2);
+        int16x8_t vprod0x4567c2 = vmull_s8(vb4567c2x0, va0x0);
+        int16x8_t vprod1x4567c2 = vmull_s8(vb4567c2x0, va1x0);
+        int16x8_t vprod2x4567c2 = vmull_s8(vb4567c2x0, va2x0);
+        int16x8_t vprod3x4567c2 = vmull_s8(vb4567c2x0, va3x0);
+        vacc0x4567 = vpadalq_s16(vacc0x4567, vprod0x4567c2);
+        vacc1x4567 = vpadalq_s16(vacc1x4567, vprod1x4567c2);
+        vacc2x4567 = vpadalq_s16(vacc2x4567, vprod2x4567c2);
+        vacc3x4567 = vpadalq_s16(vacc3x4567, vprod3x4567c2);
+        int16x8_t vprod0x89ABc2 = vmull_s8(vb89ABc2x0, va0x0);
+        int16x8_t vprod1x89ABc2 = vmull_s8(vb89ABc2x0, va1x0);
+        int16x8_t vprod2x89ABc2 = vmull_s8(vb89ABc2x0, va2x0);
+        int16x8_t vprod3x89ABc2 = vmull_s8(vb89ABc2x0, va3x0);
+        vacc0x89AB = vpadalq_s16(vacc0x89AB, vprod0x89ABc2);
+        vacc1x89AB = vpadalq_s16(vacc1x89AB, vprod1x89ABc2);
+        vacc2x89AB = vpadalq_s16(vacc2x89AB, vprod2x89ABc2);
+        vacc3x89AB = vpadalq_s16(vacc3x89AB, vprod3x89ABc2);
+        int16x8_t vprod0xCDEFc2 = vmull_s8(vbCDEFc2x0, va0x0);
+        int16x8_t vprod1xCDEFc2 = vmull_s8(vbCDEFc2x0, va1x0);
+        int16x8_t vprod2xCDEFc2 = vmull_s8(vbCDEFc2x0, va2x0);
+        int16x8_t vprod3xCDEFc2 = vmull_s8(vbCDEFc2x0, va3x0);
+        vacc0xCDEF = vpadalq_s16(vacc0xCDEF, vprod0xCDEFc2);
+        vacc1xCDEF = vpadalq_s16(vacc1xCDEF, vprod1xCDEFc2);
+        vacc2xCDEF = vpadalq_s16(vacc2xCDEF, vprod2xCDEFc2);
+        vacc3xCDEF = vpadalq_s16(vacc3xCDEF, vprod3xCDEFc2);
+        va0x0 = vext_s8(va0x0, va0x0, 2);
+        va1x0 = vext_s8(va1x0, va1x0, 2);
+        va2x0 = vext_s8(va2x0, va2x0, 2);
+        va3x0 = vext_s8(va3x0, va3x0, 2);
+        int16x8_t vprod0x0123c3 = vmull_s8(vb0123c3x0, va0x0);
+        int16x8_t vprod1x0123c3 = vmull_s8(vb0123c3x0, va1x0);
+        int16x8_t vprod2x0123c3 = vmull_s8(vb0123c3x0, va2x0);
+        int16x8_t vprod3x0123c3 = vmull_s8(vb0123c3x0, va3x0);
+        vacc0x0123 = vpadalq_s16(vacc0x0123, vprod0x0123c3);
+        vacc1x0123 = vpadalq_s16(vacc1x0123, vprod1x0123c3);
+        vacc2x0123 = vpadalq_s16(vacc2x0123, vprod2x0123c3);
+        vacc3x0123 = vpadalq_s16(vacc3x0123, vprod3x0123c3);
+        int16x8_t vprod0x4567c3 = vmull_s8(vb4567c3x0, va0x0);
+        int16x8_t vprod1x4567c3 = vmull_s8(vb4567c3x0, va1x0);
+        int16x8_t vprod2x4567c3 = vmull_s8(vb4567c3x0, va2x0);
+        int16x8_t vprod3x4567c3 = vmull_s8(vb4567c3x0, va3x0);
+        vacc0x4567 = vpadalq_s16(vacc0x4567, vprod0x4567c3);
+        vacc1x4567 = vpadalq_s16(vacc1x4567, vprod1x4567c3);
+        vacc2x4567 = vpadalq_s16(vacc2x4567, vprod2x4567c3);
+        vacc3x4567 = vpadalq_s16(vacc3x4567, vprod3x4567c3);
+        int16x8_t vprod0x89ABc3 = vmull_s8(vb89ABc3x0, va0x0);
+        int16x8_t vprod1x89ABc3 = vmull_s8(vb89ABc3x0, va1x0);
+        int16x8_t vprod2x89ABc3 = vmull_s8(vb89ABc3x0, va2x0);
+        int16x8_t vprod3x89ABc3 = vmull_s8(vb89ABc3x0, va3x0);
+        vacc0x89AB = vpadalq_s16(vacc0x89AB, vprod0x89ABc3);
+        vacc1x89AB = vpadalq_s16(vacc1x89AB, vprod1x89ABc3);
+        vacc2x89AB = vpadalq_s16(vacc2x89AB, vprod2x89ABc3);
+        vacc3x89AB = vpadalq_s16(vacc3x89AB, vprod3x89ABc3);
+        int16x8_t vprod0xCDEFc3 = vmull_s8(vbCDEFc3x0, va0x0);
+        int16x8_t vprod1xCDEFc3 = vmull_s8(vbCDEFc3x0, va1x0);
+        int16x8_t vprod2xCDEFc3 = vmull_s8(vbCDEFc3x0, va2x0);
+        int16x8_t vprod3xCDEFc3 = vmull_s8(vbCDEFc3x0, va3x0);
+        vacc0xCDEF = vpadalq_s16(vacc0xCDEF, vprod0xCDEFc3);
+        vacc1xCDEF = vpadalq_s16(vacc1xCDEF, vprod1xCDEFc3);
+        vacc2xCDEF = vpadalq_s16(vacc2xCDEF, vprod2xCDEFc3);
+        vacc3xCDEF = vpadalq_s16(vacc3xCDEF, vprod3xCDEFc3);
+
+        k -= 8 * sizeof(int8_t);
+      }
+
+      if XNN_UNLIKELY(k != 0) {
+        const int8x8_t va0 = vld1_s8(a0); a0 = (const int8_t*) ((uintptr_t) a0 + k);
+        const int8x8_t va1 = vld1_s8(a1); a1 = (const int8_t*) ((uintptr_t) a1 + k);
+        const int8x8_t va2 = vld1_s8(a2); a2 = (const int8_t*) ((uintptr_t) a2 + k);
+        const int8x8_t va3 = vld1_s8(a3); a3 = (const int8_t*) ((uintptr_t) a3 + k);
+
+        const int8x8_t vb0123c0 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+        const int8x8_t vb4567c0 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+        const int8x8_t vb89ABc0 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+        const int8x8_t vbCDEFc0 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+
+        const int16x8_t vprod0x0123c0 = vmull_s8(vb0123c0, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va0), 0)));
+        vacc0x0123 = vpadalq_s16(vacc0x0123, vprod0x0123c0);
+        const int16x8_t vprod0x4567c0 = vmull_s8(vb4567c0, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va0), 0)));
+        vacc0x4567 = vpadalq_s16(vacc0x4567, vprod0x4567c0);
+        const int16x8_t vprod0x89ABc0 = vmull_s8(vb89ABc0, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va0), 0)));
+        vacc0x89AB = vpadalq_s16(vacc0x89AB, vprod0x89ABc0);
+        const int16x8_t vprod0xCDEFc0 = vmull_s8(vbCDEFc0, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va0), 0)));
+        vacc0xCDEF = vpadalq_s16(vacc0xCDEF, vprod0xCDEFc0);
+        const int16x8_t vprod1x0123c0 = vmull_s8(vb0123c0, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va1), 0)));
+        vacc1x0123 = vpadalq_s16(vacc1x0123, vprod1x0123c0);
+        const int16x8_t vprod1x4567c0 = vmull_s8(vb4567c0, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va1), 0)));
+        vacc1x4567 = vpadalq_s16(vacc1x4567, vprod1x4567c0);
+        const int16x8_t vprod1x89ABc0 = vmull_s8(vb89ABc0, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va1), 0)));
+        vacc1x89AB = vpadalq_s16(vacc1x89AB, vprod1x89ABc0);
+        const int16x8_t vprod1xCDEFc0 = vmull_s8(vbCDEFc0, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va1), 0)));
+        vacc1xCDEF = vpadalq_s16(vacc1xCDEF, vprod1xCDEFc0);
+        const int16x8_t vprod2x0123c0 = vmull_s8(vb0123c0, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va2), 0)));
+        vacc2x0123 = vpadalq_s16(vacc2x0123, vprod2x0123c0);
+        const int16x8_t vprod2x4567c0 = vmull_s8(vb4567c0, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va2), 0)));
+        vacc2x4567 = vpadalq_s16(vacc2x4567, vprod2x4567c0);
+        const int16x8_t vprod2x89ABc0 = vmull_s8(vb89ABc0, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va2), 0)));
+        vacc2x89AB = vpadalq_s16(vacc2x89AB, vprod2x89ABc0);
+        const int16x8_t vprod2xCDEFc0 = vmull_s8(vbCDEFc0, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va2), 0)));
+        vacc2xCDEF = vpadalq_s16(vacc2xCDEF, vprod2xCDEFc0);
+        const int16x8_t vprod3x0123c0 = vmull_s8(vb0123c0, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va3), 0)));
+        vacc3x0123 = vpadalq_s16(vacc3x0123, vprod3x0123c0);
+        const int16x8_t vprod3x4567c0 = vmull_s8(vb4567c0, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va3), 0)));
+        vacc3x4567 = vpadalq_s16(vacc3x4567, vprod3x4567c0);
+        const int16x8_t vprod3x89ABc0 = vmull_s8(vb89ABc0, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va3), 0)));
+        vacc3x89AB = vpadalq_s16(vacc3x89AB, vprod3x89ABc0);
+        const int16x8_t vprod3xCDEFc0 = vmull_s8(vbCDEFc0, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va3), 0)));
+        vacc3xCDEF = vpadalq_s16(vacc3xCDEF, vprod3xCDEFc0);
+
+        if (k > 2 * sizeof(int8_t)) {
+          const int8x8_t vb0123c1 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+          const int8x8_t vb4567c1 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+          const int8x8_t vb89ABc1 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+          const int8x8_t vbCDEFc1 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+
+          const int16x8_t vprod0x0123c1 = vmull_s8(vb0123c1, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va0), 1)));
+          vacc0x0123 = vpadalq_s16(vacc0x0123, vprod0x0123c1);
+          const int16x8_t vprod0x4567c1 = vmull_s8(vb4567c1, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va0), 1)));
+          vacc0x4567 = vpadalq_s16(vacc0x4567, vprod0x4567c1);
+          const int16x8_t vprod0x89ABc1 = vmull_s8(vb89ABc1, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va0), 1)));
+          vacc0x89AB = vpadalq_s16(vacc0x89AB, vprod0x89ABc1);
+          const int16x8_t vprod0xCDEFc1 = vmull_s8(vbCDEFc1, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va0), 1)));
+          vacc0xCDEF = vpadalq_s16(vacc0xCDEF, vprod0xCDEFc1);
+          const int16x8_t vprod1x0123c1 = vmull_s8(vb0123c1, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va1), 1)));
+          vacc1x0123 = vpadalq_s16(vacc1x0123, vprod1x0123c1);
+          const int16x8_t vprod1x4567c1 = vmull_s8(vb4567c1, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va1), 1)));
+          vacc1x4567 = vpadalq_s16(vacc1x4567, vprod1x4567c1);
+          const int16x8_t vprod1x89ABc1 = vmull_s8(vb89ABc1, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va1), 1)));
+          vacc1x89AB = vpadalq_s16(vacc1x89AB, vprod1x89ABc1);
+          const int16x8_t vprod1xCDEFc1 = vmull_s8(vbCDEFc1, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va1), 1)));
+          vacc1xCDEF = vpadalq_s16(vacc1xCDEF, vprod1xCDEFc1);
+          const int16x8_t vprod2x0123c1 = vmull_s8(vb0123c1, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va2), 1)));
+          vacc2x0123 = vpadalq_s16(vacc2x0123, vprod2x0123c1);
+          const int16x8_t vprod2x4567c1 = vmull_s8(vb4567c1, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va2), 1)));
+          vacc2x4567 = vpadalq_s16(vacc2x4567, vprod2x4567c1);
+          const int16x8_t vprod2x89ABc1 = vmull_s8(vb89ABc1, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va2), 1)));
+          vacc2x89AB = vpadalq_s16(vacc2x89AB, vprod2x89ABc1);
+          const int16x8_t vprod2xCDEFc1 = vmull_s8(vbCDEFc1, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va2), 1)));
+          vacc2xCDEF = vpadalq_s16(vacc2xCDEF, vprod2xCDEFc1);
+          const int16x8_t vprod3x0123c1 = vmull_s8(vb0123c1, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va3), 1)));
+          vacc3x0123 = vpadalq_s16(vacc3x0123, vprod3x0123c1);
+          const int16x8_t vprod3x4567c1 = vmull_s8(vb4567c1, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va3), 1)));
+          vacc3x4567 = vpadalq_s16(vacc3x4567, vprod3x4567c1);
+          const int16x8_t vprod3x89ABc1 = vmull_s8(vb89ABc1, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va3), 1)));
+          vacc3x89AB = vpadalq_s16(vacc3x89AB, vprod3x89ABc1);
+          const int16x8_t vprod3xCDEFc1 = vmull_s8(vbCDEFc1, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va3), 1)));
+          vacc3xCDEF = vpadalq_s16(vacc3xCDEF, vprod3xCDEFc1);
+
+          if (k > 4 * sizeof(int8_t)) {
+            const int8x8_t vb0123c2 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+            const int8x8_t vb4567c2 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+            const int8x8_t vb89ABc2 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+            const int8x8_t vbCDEFc2 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+
+            const int16x8_t vprod0x0123c2 = vmull_s8(vb0123c2, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va0), 2)));
+            vacc0x0123 = vpadalq_s16(vacc0x0123, vprod0x0123c2);
+            const int16x8_t vprod0x4567c2 = vmull_s8(vb4567c2, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va0), 2)));
+            vacc0x4567 = vpadalq_s16(vacc0x4567, vprod0x4567c2);
+            const int16x8_t vprod0x89ABc2 = vmull_s8(vb89ABc2, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va0), 2)));
+            vacc0x89AB = vpadalq_s16(vacc0x89AB, vprod0x89ABc2);
+            const int16x8_t vprod0xCDEFc2 = vmull_s8(vbCDEFc2, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va0), 2)));
+            vacc0xCDEF = vpadalq_s16(vacc0xCDEF, vprod0xCDEFc2);
+            const int16x8_t vprod1x0123c2 = vmull_s8(vb0123c2, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va1), 2)));
+            vacc1x0123 = vpadalq_s16(vacc1x0123, vprod1x0123c2);
+            const int16x8_t vprod1x4567c2 = vmull_s8(vb4567c2, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va1), 2)));
+            vacc1x4567 = vpadalq_s16(vacc1x4567, vprod1x4567c2);
+            const int16x8_t vprod1x89ABc2 = vmull_s8(vb89ABc2, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va1), 2)));
+            vacc1x89AB = vpadalq_s16(vacc1x89AB, vprod1x89ABc2);
+            const int16x8_t vprod1xCDEFc2 = vmull_s8(vbCDEFc2, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va1), 2)));
+            vacc1xCDEF = vpadalq_s16(vacc1xCDEF, vprod1xCDEFc2);
+            const int16x8_t vprod2x0123c2 = vmull_s8(vb0123c2, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va2), 2)));
+            vacc2x0123 = vpadalq_s16(vacc2x0123, vprod2x0123c2);
+            const int16x8_t vprod2x4567c2 = vmull_s8(vb4567c2, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va2), 2)));
+            vacc2x4567 = vpadalq_s16(vacc2x4567, vprod2x4567c2);
+            const int16x8_t vprod2x89ABc2 = vmull_s8(vb89ABc2, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va2), 2)));
+            vacc2x89AB = vpadalq_s16(vacc2x89AB, vprod2x89ABc2);
+            const int16x8_t vprod2xCDEFc2 = vmull_s8(vbCDEFc2, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va2), 2)));
+            vacc2xCDEF = vpadalq_s16(vacc2xCDEF, vprod2xCDEFc2);
+            const int16x8_t vprod3x0123c2 = vmull_s8(vb0123c2, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va3), 2)));
+            vacc3x0123 = vpadalq_s16(vacc3x0123, vprod3x0123c2);
+            const int16x8_t vprod3x4567c2 = vmull_s8(vb4567c2, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va3), 2)));
+            vacc3x4567 = vpadalq_s16(vacc3x4567, vprod3x4567c2);
+            const int16x8_t vprod3x89ABc2 = vmull_s8(vb89ABc2, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va3), 2)));
+            vacc3x89AB = vpadalq_s16(vacc3x89AB, vprod3x89ABc2);
+            const int16x8_t vprod3xCDEFc2 = vmull_s8(vbCDEFc2, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va3), 2)));
+            vacc3xCDEF = vpadalq_s16(vacc3xCDEF, vprod3xCDEFc2);
+
+            if (k > 6 * sizeof(int8_t)) {
+              const int8x8_t vb0123c2 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+              const int8x8_t vb4567c2 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+              const int8x8_t vb89ABc2 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+              const int8x8_t vbCDEFc2 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+
+              const int16x8_t vprod0x0123c2 = vmull_s8(vb0123c2, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va0), 3)));
+              vacc0x0123 = vpadalq_s16(vacc0x0123, vprod0x0123c2);
+              const int16x8_t vprod0x4567c2 = vmull_s8(vb4567c2, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va0), 3)));
+              vacc0x4567 = vpadalq_s16(vacc0x4567, vprod0x4567c2);
+              const int16x8_t vprod0x89ABc2 = vmull_s8(vb89ABc2, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va0), 3)));
+              vacc0x89AB = vpadalq_s16(vacc0x89AB, vprod0x89ABc2);
+              const int16x8_t vprod0xCDEFc2 = vmull_s8(vbCDEFc2, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va0), 3)));
+              vacc0xCDEF = vpadalq_s16(vacc0xCDEF, vprod0xCDEFc2);
+              const int16x8_t vprod1x0123c2 = vmull_s8(vb0123c2, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va1), 3)));
+              vacc1x0123 = vpadalq_s16(vacc1x0123, vprod1x0123c2);
+              const int16x8_t vprod1x4567c2 = vmull_s8(vb4567c2, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va1), 3)));
+              vacc1x4567 = vpadalq_s16(vacc1x4567, vprod1x4567c2);
+              const int16x8_t vprod1x89ABc2 = vmull_s8(vb89ABc2, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va1), 3)));
+              vacc1x89AB = vpadalq_s16(vacc1x89AB, vprod1x89ABc2);
+              const int16x8_t vprod1xCDEFc2 = vmull_s8(vbCDEFc2, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va1), 3)));
+              vacc1xCDEF = vpadalq_s16(vacc1xCDEF, vprod1xCDEFc2);
+              const int16x8_t vprod2x0123c2 = vmull_s8(vb0123c2, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va2), 3)));
+              vacc2x0123 = vpadalq_s16(vacc2x0123, vprod2x0123c2);
+              const int16x8_t vprod2x4567c2 = vmull_s8(vb4567c2, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va2), 3)));
+              vacc2x4567 = vpadalq_s16(vacc2x4567, vprod2x4567c2);
+              const int16x8_t vprod2x89ABc2 = vmull_s8(vb89ABc2, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va2), 3)));
+              vacc2x89AB = vpadalq_s16(vacc2x89AB, vprod2x89ABc2);
+              const int16x8_t vprod2xCDEFc2 = vmull_s8(vbCDEFc2, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va2), 3)));
+              vacc2xCDEF = vpadalq_s16(vacc2xCDEF, vprod2xCDEFc2);
+              const int16x8_t vprod3x0123c2 = vmull_s8(vb0123c2, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va3), 3)));
+              vacc3x0123 = vpadalq_s16(vacc3x0123, vprod3x0123c2);
+              const int16x8_t vprod3x4567c2 = vmull_s8(vb4567c2, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va3), 3)));
+              vacc3x4567 = vpadalq_s16(vacc3x4567, vprod3x4567c2);
+              const int16x8_t vprod3x89ABc2 = vmull_s8(vb89ABc2, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va3), 3)));
+              vacc3x89AB = vpadalq_s16(vacc3x89AB, vprod3x89ABc2);
+              const int16x8_t vprod3xCDEFc2 = vmull_s8(vbCDEFc2, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va3), 3)));
+              vacc3xCDEF = vpadalq_s16(vacc3xCDEF, vprod3xCDEFc2);
+            }
+          }
+        }
+      }
+      p -= 4 * sizeof(void*);
+    } while (p != 0);
+
+    const int32x4_t vright_pre_shift = vld1q_dup_s32(&params->rndnu_neon.right_pre_shift);
+    const int32x4_t vmultiplier = vld1q_dup_s32(&params->rndnu_neon.multiplier);
+    const int32x4_t vright_post_shift = vld1q_dup_s32(&params->rndnu_neon.right_post_shift);
+
+    vacc0x0123 = vshlq_s32(vacc0x0123, vright_pre_shift);
+    vacc0x4567 = vshlq_s32(vacc0x4567, vright_pre_shift);
+    vacc0x89AB = vshlq_s32(vacc0x89AB, vright_pre_shift);
+    vacc0xCDEF = vshlq_s32(vacc0xCDEF, vright_pre_shift);
+    vacc1x0123 = vshlq_s32(vacc1x0123, vright_pre_shift);
+    vacc1x4567 = vshlq_s32(vacc1x4567, vright_pre_shift);
+    vacc1x89AB = vshlq_s32(vacc1x89AB, vright_pre_shift);
+    vacc1xCDEF = vshlq_s32(vacc1xCDEF, vright_pre_shift);
+    vacc2x0123 = vshlq_s32(vacc2x0123, vright_pre_shift);
+    vacc2x4567 = vshlq_s32(vacc2x4567, vright_pre_shift);
+    vacc2x89AB = vshlq_s32(vacc2x89AB, vright_pre_shift);
+    vacc2xCDEF = vshlq_s32(vacc2xCDEF, vright_pre_shift);
+    vacc3x0123 = vshlq_s32(vacc3x0123, vright_pre_shift);
+    vacc3x4567 = vshlq_s32(vacc3x4567, vright_pre_shift);
+    vacc3x89AB = vshlq_s32(vacc3x89AB, vright_pre_shift);
+    vacc3xCDEF = vshlq_s32(vacc3xCDEF, vright_pre_shift);
+
+    vacc0x0123 = vqdmulhq_s32(vacc0x0123, vmultiplier);
+    vacc0x4567 = vqdmulhq_s32(vacc0x4567, vmultiplier);
+    vacc0x89AB = vqdmulhq_s32(vacc0x89AB, vmultiplier);
+    vacc0xCDEF = vqdmulhq_s32(vacc0xCDEF, vmultiplier);
+    vacc1x0123 = vqdmulhq_s32(vacc1x0123, vmultiplier);
+    vacc1x4567 = vqdmulhq_s32(vacc1x4567, vmultiplier);
+    vacc1x89AB = vqdmulhq_s32(vacc1x89AB, vmultiplier);
+    vacc1xCDEF = vqdmulhq_s32(vacc1xCDEF, vmultiplier);
+    vacc2x0123 = vqdmulhq_s32(vacc2x0123, vmultiplier);
+    vacc2x4567 = vqdmulhq_s32(vacc2x4567, vmultiplier);
+    vacc2x89AB = vqdmulhq_s32(vacc2x89AB, vmultiplier);
+    vacc2xCDEF = vqdmulhq_s32(vacc2xCDEF, vmultiplier);
+    vacc3x0123 = vqdmulhq_s32(vacc3x0123, vmultiplier);
+    vacc3x4567 = vqdmulhq_s32(vacc3x4567, vmultiplier);
+    vacc3x89AB = vqdmulhq_s32(vacc3x89AB, vmultiplier);
+    vacc3xCDEF = vqdmulhq_s32(vacc3xCDEF, vmultiplier);
+
+    vacc0x0123 = vrshlq_s32(vacc0x0123, vright_post_shift);
+    vacc0x4567 = vrshlq_s32(vacc0x4567, vright_post_shift);
+    vacc0x89AB = vrshlq_s32(vacc0x89AB, vright_post_shift);
+    vacc0xCDEF = vrshlq_s32(vacc0xCDEF, vright_post_shift);
+    vacc1x0123 = vrshlq_s32(vacc1x0123, vright_post_shift);
+    vacc1x4567 = vrshlq_s32(vacc1x4567, vright_post_shift);
+    vacc1x89AB = vrshlq_s32(vacc1x89AB, vright_post_shift);
+    vacc1xCDEF = vrshlq_s32(vacc1xCDEF, vright_post_shift);
+    vacc2x0123 = vrshlq_s32(vacc2x0123, vright_post_shift);
+    vacc2x4567 = vrshlq_s32(vacc2x4567, vright_post_shift);
+    vacc2x89AB = vrshlq_s32(vacc2x89AB, vright_post_shift);
+    vacc2xCDEF = vrshlq_s32(vacc2xCDEF, vright_post_shift);
+    vacc3x0123 = vrshlq_s32(vacc3x0123, vright_post_shift);
+    vacc3x4567 = vrshlq_s32(vacc3x4567, vright_post_shift);
+    vacc3x89AB = vrshlq_s32(vacc3x89AB, vright_post_shift);
+    vacc3xCDEF = vrshlq_s32(vacc3xCDEF, vright_post_shift);
+
+    const int16x8_t voutput_zero_point = vld1q_dup_s16(&params->rndnu_neon.output_zero_point);
+#if XNN_ARCH_ARM64
+    const int16x8_t vacc0x01234567 = vqaddq_s16(vqmovn_high_s32(vqmovn_s32(vacc0x0123), vacc0x4567), voutput_zero_point);
+    const int16x8_t vacc0x89ABCDEF = vqaddq_s16(vqmovn_high_s32(vqmovn_s32(vacc0x89AB), vacc0xCDEF), voutput_zero_point);
+    const int16x8_t vacc1x01234567 = vqaddq_s16(vqmovn_high_s32(vqmovn_s32(vacc1x0123), vacc1x4567), voutput_zero_point);
+    const int16x8_t vacc1x89ABCDEF = vqaddq_s16(vqmovn_high_s32(vqmovn_s32(vacc1x89AB), vacc1xCDEF), voutput_zero_point);
+    const int16x8_t vacc2x01234567 = vqaddq_s16(vqmovn_high_s32(vqmovn_s32(vacc2x0123), vacc2x4567), voutput_zero_point);
+    const int16x8_t vacc2x89ABCDEF = vqaddq_s16(vqmovn_high_s32(vqmovn_s32(vacc2x89AB), vacc2xCDEF), voutput_zero_point);
+    const int16x8_t vacc3x01234567 = vqaddq_s16(vqmovn_high_s32(vqmovn_s32(vacc3x0123), vacc3x4567), voutput_zero_point);
+    const int16x8_t vacc3x89ABCDEF = vqaddq_s16(vqmovn_high_s32(vqmovn_s32(vacc3x89AB), vacc3xCDEF), voutput_zero_point);
+
+    int8x16_t vout0x0123456789ABCDEF = vqmovn_high_s16(vqmovn_s16(vacc0x01234567), vacc0x89ABCDEF);
+    int8x16_t vout1x0123456789ABCDEF = vqmovn_high_s16(vqmovn_s16(vacc1x01234567), vacc1x89ABCDEF);
+    int8x16_t vout2x0123456789ABCDEF = vqmovn_high_s16(vqmovn_s16(vacc2x01234567), vacc2x89ABCDEF);
+    int8x16_t vout3x0123456789ABCDEF = vqmovn_high_s16(vqmovn_s16(vacc3x01234567), vacc3x89ABCDEF);
+#else
+    const int16x8_t vacc0x01234567 = vqaddq_s16(vcombine_s16(vqmovn_s32(vacc0x0123), vqmovn_s32(vacc0x4567)), voutput_zero_point);
+    const int16x8_t vacc0x89ABCDEF = vqaddq_s16(vcombine_s16(vqmovn_s32(vacc0x89AB), vqmovn_s32(vacc0xCDEF)), voutput_zero_point);
+    const int16x8_t vacc1x01234567 = vqaddq_s16(vcombine_s16(vqmovn_s32(vacc1x0123), vqmovn_s32(vacc1x4567)), voutput_zero_point);
+    const int16x8_t vacc1x89ABCDEF = vqaddq_s16(vcombine_s16(vqmovn_s32(vacc1x89AB), vqmovn_s32(vacc1xCDEF)), voutput_zero_point);
+    const int16x8_t vacc2x01234567 = vqaddq_s16(vcombine_s16(vqmovn_s32(vacc2x0123), vqmovn_s32(vacc2x4567)), voutput_zero_point);
+    const int16x8_t vacc2x89ABCDEF = vqaddq_s16(vcombine_s16(vqmovn_s32(vacc2x89AB), vqmovn_s32(vacc2xCDEF)), voutput_zero_point);
+    const int16x8_t vacc3x01234567 = vqaddq_s16(vcombine_s16(vqmovn_s32(vacc3x0123), vqmovn_s32(vacc3x4567)), voutput_zero_point);
+    const int16x8_t vacc3x89ABCDEF = vqaddq_s16(vcombine_s16(vqmovn_s32(vacc3x89AB), vqmovn_s32(vacc3xCDEF)), voutput_zero_point);
+
+    int8x16_t vout0x0123456789ABCDEF = vcombine_s8(vqmovn_s16(vacc0x01234567), vqmovn_s16(vacc0x89ABCDEF));
+    int8x16_t vout1x0123456789ABCDEF = vcombine_s8(vqmovn_s16(vacc1x01234567), vqmovn_s16(vacc1x89ABCDEF));
+    int8x16_t vout2x0123456789ABCDEF = vcombine_s8(vqmovn_s16(vacc2x01234567), vqmovn_s16(vacc2x89ABCDEF));
+    int8x16_t vout3x0123456789ABCDEF = vcombine_s8(vqmovn_s16(vacc3x01234567), vqmovn_s16(vacc3x89ABCDEF));
+#endif
+    const int8x16_t voutput_min = vld1q_dup_s8(&params->rndnu_neon.output_min);
+    const int8x16_t voutput_max = vld1q_dup_s8(&params->rndnu_neon.output_max);
+
+    vout3x0123456789ABCDEF = vmaxq_s8(vout3x0123456789ABCDEF, voutput_min);
+    vout2x0123456789ABCDEF = vmaxq_s8(vout2x0123456789ABCDEF, voutput_min);
+    vout1x0123456789ABCDEF = vmaxq_s8(vout1x0123456789ABCDEF, voutput_min);
+    vout0x0123456789ABCDEF = vmaxq_s8(vout0x0123456789ABCDEF, voutput_min);
+
+    vout3x0123456789ABCDEF = vminq_s8(vout3x0123456789ABCDEF, voutput_max);
+    vout2x0123456789ABCDEF = vminq_s8(vout2x0123456789ABCDEF, voutput_max);
+    vout1x0123456789ABCDEF = vminq_s8(vout1x0123456789ABCDEF, voutput_max);
+    vout0x0123456789ABCDEF = vminq_s8(vout0x0123456789ABCDEF, voutput_max);
+
+    if (nc >= 16) {
+      vst1q_s8(c3 + 0, vout3x0123456789ABCDEF);
+      vst1q_s8(c2 + 0, vout2x0123456789ABCDEF);
+      vst1q_s8(c1 + 0, vout1x0123456789ABCDEF);
+      vst1q_s8(c0 + 0, vout0x0123456789ABCDEF);
+
+      c3 = (int8_t*) ((uintptr_t) c3 + cn_stride);
+      c2 = (int8_t*) ((uintptr_t) c2 + cn_stride);
+      c1 = (int8_t*) ((uintptr_t) c1 + cn_stride);
+      c0 = (int8_t*) ((uintptr_t) c0 + cn_stride);
+
+      a = (const int8_t**restrict) ((uintptr_t) a - ks);
+
+      nc -= 16;
+    } else {
+      int8x16_t vout2x01234567_3x01234567 = vcombine_s8(vget_low_s8(vout2x0123456789ABCDEF), vget_low_s8(vout3x0123456789ABCDEF));
+      int8x16_t vout0x01234567_1x01234567 = vcombine_s8(vget_low_s8(vout0x0123456789ABCDEF), vget_low_s8(vout1x0123456789ABCDEF));
+      if (nc & 8) {
+        vst1_s8(c3, vget_high_s8(vout2x01234567_3x01234567)); c3 += 8;
+        vst1_s8(c2, vget_low_s8(vout2x01234567_3x01234567)); c2 += 8;
+        vst1_s8(c1, vget_high_s8(vout0x01234567_1x01234567)); c1 += 8;
+        vst1_s8(c0, vget_low_s8(vout0x01234567_1x01234567)); c0 += 8;
+        vout2x01234567_3x01234567 = vcombine_s8(vget_high_s8(vout2x0123456789ABCDEF), vget_high_s8(vout3x0123456789ABCDEF));
+        vout0x01234567_1x01234567 = vcombine_s8(vget_high_s8(vout0x0123456789ABCDEF), vget_high_s8(vout1x0123456789ABCDEF));
+      }
+      if (nc & 4) {
+        vst1q_lane_u32(__builtin_assume_aligned(c3, 1), vreinterpretq_u32_s8(vout2x01234567_3x01234567), 2); c3 += 4;
+        vst1q_lane_u32(__builtin_assume_aligned(c2, 1), vreinterpretq_u32_s8(vout2x01234567_3x01234567), 0); c2 += 4;
+        vst1q_lane_u32(__builtin_assume_aligned(c1, 1), vreinterpretq_u32_s8(vout0x01234567_1x01234567), 2); c1 += 4;
+        vst1q_lane_u32(__builtin_assume_aligned(c0, 1), vreinterpretq_u32_s8(vout0x01234567_1x01234567), 0); c0 += 4;
+        vout2x01234567_3x01234567 = vextq_s8(vout2x01234567_3x01234567, vout2x01234567_3x01234567, 4);
+        vout0x01234567_1x01234567 = vextq_s8(vout0x01234567_1x01234567, vout0x01234567_1x01234567, 4);
+      }
+      if (nc & 2) {
+        vst1q_lane_u16(__builtin_assume_aligned(c3, 1), vreinterpretq_u16_s8(vout2x01234567_3x01234567), 4); c3 += 2;
+        vst1q_lane_u16(__builtin_assume_aligned(c2, 1), vreinterpretq_u16_s8(vout2x01234567_3x01234567), 0); c2 += 2;
+        vst1q_lane_u16(__builtin_assume_aligned(c1, 1), vreinterpretq_u16_s8(vout0x01234567_1x01234567), 4); c1 += 2;
+        vst1q_lane_u16(__builtin_assume_aligned(c0, 1), vreinterpretq_u16_s8(vout0x01234567_1x01234567), 0); c0 += 2;
+        vout2x01234567_3x01234567 = vextq_s8(vout2x01234567_3x01234567, vout2x01234567_3x01234567, 2);
+        vout0x01234567_1x01234567 = vextq_s8(vout0x01234567_1x01234567, vout0x01234567_1x01234567, 2);
+      }
+      if (nc & 1) {
+        vst1q_lane_s8(c3, vout2x01234567_3x01234567, 8);
+        vst1q_lane_s8(c2, vout2x01234567_3x01234567, 0);
+        vst1q_lane_s8(c1, vout0x01234567_1x01234567, 8);
+        vst1q_lane_s8(c0, vout0x01234567_1x01234567, 0);
+      }
+
+      nc = 0;
+    }
+  } while (nc != 0);
+}
diff --git a/src/qs8-igemm/gen/4x16c2s4-minmax-rndnu-neon-mull-padal.c b/src/qs8-igemm/gen/4x16c2s4-minmax-rndnu-neon-mull-padal.c
new file mode 100644
index 0000000..23c0d24
--- /dev/null
+++ b/src/qs8-igemm/gen/4x16c2s4-minmax-rndnu-neon-mull-padal.c
@@ -0,0 +1,581 @@
+// Auto-generated file. Do not edit!
+//   Template: src/qs8-igemm/c2-neon-mull-padal-shuffle.c.in
+//   Generator: tools/xngen
+//
+// Copyright 2021 Google LLC
+//
+// This source code is licensed under the BSD-style license found in the
+// LICENSE file in the root directory of this source tree.
+
+#include <assert.h>
+
+#include <arm_neon.h>
+
+#include <xnnpack/gemm.h>
+#include <xnnpack/math.h>
+
+
+void xnn_qs8_igemm_minmax_rndnu_ukernel_4x16c2s4__neon_mull_padal(
+    size_t mr,
+    size_t nc,
+    size_t kc,
+    size_t ks,
+    const int8_t** restrict a,
+    const void* restrict w,
+    int8_t* restrict c,
+    size_t cm_stride,
+    size_t cn_stride,
+    size_t a_offset,
+    const int8_t* zero,
+    const union xnn_qs8_conv_minmax_params params[restrict XNN_MIN_ELEMENTS(1)]) XNN_DISABLE_TSAN XNN_DISABLE_MSAN
+{
+  assert(mr != 0);
+  assert(mr <= 4);
+  assert(nc != 0);
+  assert(kc != 0);
+  assert(ks != 0);
+  assert(ks % (4 * sizeof(void*)) == 0);
+  assert(a_offset % sizeof(int8_t) == 0);
+  assert(a != NULL);
+  assert(w != NULL);
+  assert(c != NULL);
+
+  int8_t* c0 = c;
+  int8_t* c1 = (int8_t*) ((uintptr_t) c0 + cm_stride);
+  if XNN_UNPREDICTABLE(mr < 2) {
+    c1 = c0;
+  }
+  int8_t* c2 = (int8_t*) ((uintptr_t) c1 + cm_stride);
+  if XNN_UNPREDICTABLE(mr <= 2) {
+    c2 = c1;
+  }
+  int8_t* c3 = (int8_t*) ((uintptr_t) c2 + cm_stride);
+  if XNN_UNPREDICTABLE(mr != 4) {
+    c3 = c2;
+  }
+
+  do {
+    int32x4_t vacc0x0123 = vld1q_s32(w); w = (const void*) ((uintptr_t) w + 4 * sizeof(int32_t));
+    int32x4_t vacc0x4567 = vld1q_s32(w); w = (const void*) ((uintptr_t) w + 4 * sizeof(int32_t));
+    int32x4_t vacc0x89AB = vld1q_s32(w); w = (const void*) ((uintptr_t) w + 4 * sizeof(int32_t));
+    int32x4_t vacc0xCDEF = vld1q_s32(w); w = (const void*) ((uintptr_t) w + 4 * sizeof(int32_t));
+    int32x4_t vacc1x0123 = vacc0x0123;
+    int32x4_t vacc1x4567 = vacc0x4567;
+    int32x4_t vacc1x89AB = vacc0x89AB;
+    int32x4_t vacc1xCDEF = vacc0xCDEF;
+    int32x4_t vacc2x0123 = vacc0x0123;
+    int32x4_t vacc2x4567 = vacc0x4567;
+    int32x4_t vacc2x89AB = vacc0x89AB;
+    int32x4_t vacc2xCDEF = vacc0xCDEF;
+    int32x4_t vacc3x0123 = vacc0x0123;
+    int32x4_t vacc3x4567 = vacc0x4567;
+    int32x4_t vacc3x89AB = vacc0x89AB;
+    int32x4_t vacc3xCDEF = vacc0xCDEF;
+
+    size_t p = ks;
+    do {
+      const int8_t* restrict a0 = a[0];
+      if XNN_UNPREDICTABLE(a0 != zero) {
+        a0 = (const int8_t*) ((uintptr_t) a0 + a_offset);
+      }
+      const int8_t* restrict a1 = a[1];
+      if XNN_UNPREDICTABLE(a1 != zero) {
+        a1 = (const int8_t*) ((uintptr_t) a1 + a_offset);
+      }
+      const int8_t* restrict a2 = a[2];
+      if XNN_UNPREDICTABLE(a2 != zero) {
+        a2 = (const int8_t*) ((uintptr_t) a2 + a_offset);
+      }
+      const int8_t* restrict a3 = a[3];
+      if XNN_UNPREDICTABLE(a3 != zero) {
+        a3 = (const int8_t*) ((uintptr_t) a3 + a_offset);
+      }
+      a += 4;
+
+      size_t k = kc;
+
+
+      while (k >= 8 * sizeof(int8_t)) {
+        int8x8_t va0x0 = vld1_s8(a0); a0 += 8;
+        int8x8_t va1x0 = vld1_s8(a1); a1 += 8;
+        int8x8_t va2x0 = vld1_s8(a2); a2 += 8;
+        int8x8_t va3x0 = vld1_s8(a3); a3 += 8;
+
+        const int8x8_t vb0123c0x0 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+        const int8x8_t vb4567c0x0 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+        const int8x8_t vb89ABc0x0 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+        const int8x8_t vbCDEFc0x0 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+        const int8x8_t vb0123c1x0 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+        const int8x8_t vb4567c1x0 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+        const int8x8_t vb89ABc1x0 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+        const int8x8_t vbCDEFc1x0 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+        const int8x8_t vb0123c2x0 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+        const int8x8_t vb4567c2x0 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+        const int8x8_t vb89ABc2x0 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+        const int8x8_t vbCDEFc2x0 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+        const int8x8_t vb0123c3x0 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+        const int8x8_t vb4567c3x0 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+        const int8x8_t vb89ABc3x0 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+        const int8x8_t vbCDEFc3x0 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+
+        int16x8_t vprod0x0123c0 = vmull_s8(vb0123c0x0, va0x0);
+        int16x8_t vprod1x0123c0 = vmull_s8(vb0123c0x0, va1x0);
+        int16x8_t vprod2x0123c0 = vmull_s8(vb0123c0x0, va2x0);
+        int16x8_t vprod3x0123c0 = vmull_s8(vb0123c0x0, va3x0);
+        vacc0x0123 = vpadalq_s16(vacc0x0123, vprod0x0123c0);
+        vacc1x0123 = vpadalq_s16(vacc1x0123, vprod1x0123c0);
+        vacc2x0123 = vpadalq_s16(vacc2x0123, vprod2x0123c0);
+        vacc3x0123 = vpadalq_s16(vacc3x0123, vprod3x0123c0);
+        int16x8_t vprod0x4567c0 = vmull_s8(vb4567c0x0, va0x0);
+        int16x8_t vprod1x4567c0 = vmull_s8(vb4567c0x0, va1x0);
+        int16x8_t vprod2x4567c0 = vmull_s8(vb4567c0x0, va2x0);
+        int16x8_t vprod3x4567c0 = vmull_s8(vb4567c0x0, va3x0);
+        vacc0x4567 = vpadalq_s16(vacc0x4567, vprod0x4567c0);
+        vacc1x4567 = vpadalq_s16(vacc1x4567, vprod1x4567c0);
+        vacc2x4567 = vpadalq_s16(vacc2x4567, vprod2x4567c0);
+        vacc3x4567 = vpadalq_s16(vacc3x4567, vprod3x4567c0);
+        int16x8_t vprod0x89ABc0 = vmull_s8(vb89ABc0x0, va0x0);
+        int16x8_t vprod1x89ABc0 = vmull_s8(vb89ABc0x0, va1x0);
+        int16x8_t vprod2x89ABc0 = vmull_s8(vb89ABc0x0, va2x0);
+        int16x8_t vprod3x89ABc0 = vmull_s8(vb89ABc0x0, va3x0);
+        vacc0x89AB = vpadalq_s16(vacc0x89AB, vprod0x89ABc0);
+        vacc1x89AB = vpadalq_s16(vacc1x89AB, vprod1x89ABc0);
+        vacc2x89AB = vpadalq_s16(vacc2x89AB, vprod2x89ABc0);
+        vacc3x89AB = vpadalq_s16(vacc3x89AB, vprod3x89ABc0);
+        int16x8_t vprod0xCDEFc0 = vmull_s8(vbCDEFc0x0, va0x0);
+        int16x8_t vprod1xCDEFc0 = vmull_s8(vbCDEFc0x0, va1x0);
+        int16x8_t vprod2xCDEFc0 = vmull_s8(vbCDEFc0x0, va2x0);
+        int16x8_t vprod3xCDEFc0 = vmull_s8(vbCDEFc0x0, va3x0);
+        vacc0xCDEF = vpadalq_s16(vacc0xCDEF, vprod0xCDEFc0);
+        vacc1xCDEF = vpadalq_s16(vacc1xCDEF, vprod1xCDEFc0);
+        vacc2xCDEF = vpadalq_s16(vacc2xCDEF, vprod2xCDEFc0);
+        vacc3xCDEF = vpadalq_s16(vacc3xCDEF, vprod3xCDEFc0);
+        va0x0 = vext_s8(va0x0, va0x0, 2);
+        va1x0 = vext_s8(va1x0, va1x0, 2);
+        va2x0 = vext_s8(va2x0, va2x0, 2);
+        va3x0 = vext_s8(va3x0, va3x0, 2);
+        int16x8_t vprod0x0123c1 = vmull_s8(vb0123c1x0, va0x0);
+        int16x8_t vprod1x0123c1 = vmull_s8(vb0123c1x0, va1x0);
+        int16x8_t vprod2x0123c1 = vmull_s8(vb0123c1x0, va2x0);
+        int16x8_t vprod3x0123c1 = vmull_s8(vb0123c1x0, va3x0);
+        vacc0x0123 = vpadalq_s16(vacc0x0123, vprod0x0123c1);
+        vacc1x0123 = vpadalq_s16(vacc1x0123, vprod1x0123c1);
+        vacc2x0123 = vpadalq_s16(vacc2x0123, vprod2x0123c1);
+        vacc3x0123 = vpadalq_s16(vacc3x0123, vprod3x0123c1);
+        int16x8_t vprod0x4567c1 = vmull_s8(vb4567c1x0, va0x0);
+        int16x8_t vprod1x4567c1 = vmull_s8(vb4567c1x0, va1x0);
+        int16x8_t vprod2x4567c1 = vmull_s8(vb4567c1x0, va2x0);
+        int16x8_t vprod3x4567c1 = vmull_s8(vb4567c1x0, va3x0);
+        vacc0x4567 = vpadalq_s16(vacc0x4567, vprod0x4567c1);
+        vacc1x4567 = vpadalq_s16(vacc1x4567, vprod1x4567c1);
+        vacc2x4567 = vpadalq_s16(vacc2x4567, vprod2x4567c1);
+        vacc3x4567 = vpadalq_s16(vacc3x4567, vprod3x4567c1);
+        int16x8_t vprod0x89ABc1 = vmull_s8(vb89ABc1x0, va0x0);
+        int16x8_t vprod1x89ABc1 = vmull_s8(vb89ABc1x0, va1x0);
+        int16x8_t vprod2x89ABc1 = vmull_s8(vb89ABc1x0, va2x0);
+        int16x8_t vprod3x89ABc1 = vmull_s8(vb89ABc1x0, va3x0);
+        vacc0x89AB = vpadalq_s16(vacc0x89AB, vprod0x89ABc1);
+        vacc1x89AB = vpadalq_s16(vacc1x89AB, vprod1x89ABc1);
+        vacc2x89AB = vpadalq_s16(vacc2x89AB, vprod2x89ABc1);
+        vacc3x89AB = vpadalq_s16(vacc3x89AB, vprod3x89ABc1);
+        int16x8_t vprod0xCDEFc1 = vmull_s8(vbCDEFc1x0, va0x0);
+        int16x8_t vprod1xCDEFc1 = vmull_s8(vbCDEFc1x0, va1x0);
+        int16x8_t vprod2xCDEFc1 = vmull_s8(vbCDEFc1x0, va2x0);
+        int16x8_t vprod3xCDEFc1 = vmull_s8(vbCDEFc1x0, va3x0);
+        vacc0xCDEF = vpadalq_s16(vacc0xCDEF, vprod0xCDEFc1);
+        vacc1xCDEF = vpadalq_s16(vacc1xCDEF, vprod1xCDEFc1);
+        vacc2xCDEF = vpadalq_s16(vacc2xCDEF, vprod2xCDEFc1);
+        vacc3xCDEF = vpadalq_s16(vacc3xCDEF, vprod3xCDEFc1);
+        va0x0 = vext_s8(va0x0, va0x0, 2);
+        va1x0 = vext_s8(va1x0, va1x0, 2);
+        va2x0 = vext_s8(va2x0, va2x0, 2);
+        va3x0 = vext_s8(va3x0, va3x0, 2);
+        int16x8_t vprod0x0123c2 = vmull_s8(vb0123c2x0, va0x0);
+        int16x8_t vprod1x0123c2 = vmull_s8(vb0123c2x0, va1x0);
+        int16x8_t vprod2x0123c2 = vmull_s8(vb0123c2x0, va2x0);
+        int16x8_t vprod3x0123c2 = vmull_s8(vb0123c2x0, va3x0);
+        vacc0x0123 = vpadalq_s16(vacc0x0123, vprod0x0123c2);
+        vacc1x0123 = vpadalq_s16(vacc1x0123, vprod1x0123c2);
+        vacc2x0123 = vpadalq_s16(vacc2x0123, vprod2x0123c2);
+        vacc3x0123 = vpadalq_s16(vacc3x0123, vprod3x0123c2);
+        int16x8_t vprod0x4567c2 = vmull_s8(vb4567c2x0, va0x0);
+        int16x8_t vprod1x4567c2 = vmull_s8(vb4567c2x0, va1x0);
+        int16x8_t vprod2x4567c2 = vmull_s8(vb4567c2x0, va2x0);
+        int16x8_t vprod3x4567c2 = vmull_s8(vb4567c2x0, va3x0);
+        vacc0x4567 = vpadalq_s16(vacc0x4567, vprod0x4567c2);
+        vacc1x4567 = vpadalq_s16(vacc1x4567, vprod1x4567c2);
+        vacc2x4567 = vpadalq_s16(vacc2x4567, vprod2x4567c2);
+        vacc3x4567 = vpadalq_s16(vacc3x4567, vprod3x4567c2);
+        int16x8_t vprod0x89ABc2 = vmull_s8(vb89ABc2x0, va0x0);
+        int16x8_t vprod1x89ABc2 = vmull_s8(vb89ABc2x0, va1x0);
+        int16x8_t vprod2x89ABc2 = vmull_s8(vb89ABc2x0, va2x0);
+        int16x8_t vprod3x89ABc2 = vmull_s8(vb89ABc2x0, va3x0);
+        vacc0x89AB = vpadalq_s16(vacc0x89AB, vprod0x89ABc2);
+        vacc1x89AB = vpadalq_s16(vacc1x89AB, vprod1x89ABc2);
+        vacc2x89AB = vpadalq_s16(vacc2x89AB, vprod2x89ABc2);
+        vacc3x89AB = vpadalq_s16(vacc3x89AB, vprod3x89ABc2);
+        int16x8_t vprod0xCDEFc2 = vmull_s8(vbCDEFc2x0, va0x0);
+        int16x8_t vprod1xCDEFc2 = vmull_s8(vbCDEFc2x0, va1x0);
+        int16x8_t vprod2xCDEFc2 = vmull_s8(vbCDEFc2x0, va2x0);
+        int16x8_t vprod3xCDEFc2 = vmull_s8(vbCDEFc2x0, va3x0);
+        vacc0xCDEF = vpadalq_s16(vacc0xCDEF, vprod0xCDEFc2);
+        vacc1xCDEF = vpadalq_s16(vacc1xCDEF, vprod1xCDEFc2);
+        vacc2xCDEF = vpadalq_s16(vacc2xCDEF, vprod2xCDEFc2);
+        vacc3xCDEF = vpadalq_s16(vacc3xCDEF, vprod3xCDEFc2);
+        va0x0 = vext_s8(va0x0, va0x0, 2);
+        va1x0 = vext_s8(va1x0, va1x0, 2);
+        va2x0 = vext_s8(va2x0, va2x0, 2);
+        va3x0 = vext_s8(va3x0, va3x0, 2);
+        int16x8_t vprod0x0123c3 = vmull_s8(vb0123c3x0, va0x0);
+        int16x8_t vprod1x0123c3 = vmull_s8(vb0123c3x0, va1x0);
+        int16x8_t vprod2x0123c3 = vmull_s8(vb0123c3x0, va2x0);
+        int16x8_t vprod3x0123c3 = vmull_s8(vb0123c3x0, va3x0);
+        vacc0x0123 = vpadalq_s16(vacc0x0123, vprod0x0123c3);
+        vacc1x0123 = vpadalq_s16(vacc1x0123, vprod1x0123c3);
+        vacc2x0123 = vpadalq_s16(vacc2x0123, vprod2x0123c3);
+        vacc3x0123 = vpadalq_s16(vacc3x0123, vprod3x0123c3);
+        int16x8_t vprod0x4567c3 = vmull_s8(vb4567c3x0, va0x0);
+        int16x8_t vprod1x4567c3 = vmull_s8(vb4567c3x0, va1x0);
+        int16x8_t vprod2x4567c3 = vmull_s8(vb4567c3x0, va2x0);
+        int16x8_t vprod3x4567c3 = vmull_s8(vb4567c3x0, va3x0);
+        vacc0x4567 = vpadalq_s16(vacc0x4567, vprod0x4567c3);
+        vacc1x4567 = vpadalq_s16(vacc1x4567, vprod1x4567c3);
+        vacc2x4567 = vpadalq_s16(vacc2x4567, vprod2x4567c3);
+        vacc3x4567 = vpadalq_s16(vacc3x4567, vprod3x4567c3);
+        int16x8_t vprod0x89ABc3 = vmull_s8(vb89ABc3x0, va0x0);
+        int16x8_t vprod1x89ABc3 = vmull_s8(vb89ABc3x0, va1x0);
+        int16x8_t vprod2x89ABc3 = vmull_s8(vb89ABc3x0, va2x0);
+        int16x8_t vprod3x89ABc3 = vmull_s8(vb89ABc3x0, va3x0);
+        vacc0x89AB = vpadalq_s16(vacc0x89AB, vprod0x89ABc3);
+        vacc1x89AB = vpadalq_s16(vacc1x89AB, vprod1x89ABc3);
+        vacc2x89AB = vpadalq_s16(vacc2x89AB, vprod2x89ABc3);
+        vacc3x89AB = vpadalq_s16(vacc3x89AB, vprod3x89ABc3);
+        int16x8_t vprod0xCDEFc3 = vmull_s8(vbCDEFc3x0, va0x0);
+        int16x8_t vprod1xCDEFc3 = vmull_s8(vbCDEFc3x0, va1x0);
+        int16x8_t vprod2xCDEFc3 = vmull_s8(vbCDEFc3x0, va2x0);
+        int16x8_t vprod3xCDEFc3 = vmull_s8(vbCDEFc3x0, va3x0);
+        vacc0xCDEF = vpadalq_s16(vacc0xCDEF, vprod0xCDEFc3);
+        vacc1xCDEF = vpadalq_s16(vacc1xCDEF, vprod1xCDEFc3);
+        vacc2xCDEF = vpadalq_s16(vacc2xCDEF, vprod2xCDEFc3);
+        vacc3xCDEF = vpadalq_s16(vacc3xCDEF, vprod3xCDEFc3);
+
+        k -= 8 * sizeof(int8_t);
+      }
+
+      if XNN_UNLIKELY(k != 0) {
+        const int8x8_t va0 = vld1_s8(a0); a0 = (const int8_t*) ((uintptr_t) a0 + k);
+        const int8x8_t va1 = vld1_s8(a1); a1 = (const int8_t*) ((uintptr_t) a1 + k);
+        const int8x8_t va2 = vld1_s8(a2); a2 = (const int8_t*) ((uintptr_t) a2 + k);
+        const int8x8_t va3 = vld1_s8(a3); a3 = (const int8_t*) ((uintptr_t) a3 + k);
+
+        const int8x8_t vb0123c0 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+        const int8x8_t vb4567c0 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+        const int8x8_t vb89ABc0 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+        const int8x8_t vbCDEFc0 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+
+        const int16x8_t vprod0x0123c0 = vmull_s8(vb0123c0, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va0), 0)));
+        vacc0x0123 = vpadalq_s16(vacc0x0123, vprod0x0123c0);
+        const int16x8_t vprod0x4567c0 = vmull_s8(vb4567c0, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va0), 0)));
+        vacc0x4567 = vpadalq_s16(vacc0x4567, vprod0x4567c0);
+        const int16x8_t vprod0x89ABc0 = vmull_s8(vb89ABc0, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va0), 0)));
+        vacc0x89AB = vpadalq_s16(vacc0x89AB, vprod0x89ABc0);
+        const int16x8_t vprod0xCDEFc0 = vmull_s8(vbCDEFc0, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va0), 0)));
+        vacc0xCDEF = vpadalq_s16(vacc0xCDEF, vprod0xCDEFc0);
+        const int16x8_t vprod1x0123c0 = vmull_s8(vb0123c0, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va1), 0)));
+        vacc1x0123 = vpadalq_s16(vacc1x0123, vprod1x0123c0);
+        const int16x8_t vprod1x4567c0 = vmull_s8(vb4567c0, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va1), 0)));
+        vacc1x4567 = vpadalq_s16(vacc1x4567, vprod1x4567c0);
+        const int16x8_t vprod1x89ABc0 = vmull_s8(vb89ABc0, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va1), 0)));
+        vacc1x89AB = vpadalq_s16(vacc1x89AB, vprod1x89ABc0);
+        const int16x8_t vprod1xCDEFc0 = vmull_s8(vbCDEFc0, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va1), 0)));
+        vacc1xCDEF = vpadalq_s16(vacc1xCDEF, vprod1xCDEFc0);
+        const int16x8_t vprod2x0123c0 = vmull_s8(vb0123c0, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va2), 0)));
+        vacc2x0123 = vpadalq_s16(vacc2x0123, vprod2x0123c0);
+        const int16x8_t vprod2x4567c0 = vmull_s8(vb4567c0, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va2), 0)));
+        vacc2x4567 = vpadalq_s16(vacc2x4567, vprod2x4567c0);
+        const int16x8_t vprod2x89ABc0 = vmull_s8(vb89ABc0, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va2), 0)));
+        vacc2x89AB = vpadalq_s16(vacc2x89AB, vprod2x89ABc0);
+        const int16x8_t vprod2xCDEFc0 = vmull_s8(vbCDEFc0, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va2), 0)));
+        vacc2xCDEF = vpadalq_s16(vacc2xCDEF, vprod2xCDEFc0);
+        const int16x8_t vprod3x0123c0 = vmull_s8(vb0123c0, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va3), 0)));
+        vacc3x0123 = vpadalq_s16(vacc3x0123, vprod3x0123c0);
+        const int16x8_t vprod3x4567c0 = vmull_s8(vb4567c0, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va3), 0)));
+        vacc3x4567 = vpadalq_s16(vacc3x4567, vprod3x4567c0);
+        const int16x8_t vprod3x89ABc0 = vmull_s8(vb89ABc0, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va3), 0)));
+        vacc3x89AB = vpadalq_s16(vacc3x89AB, vprod3x89ABc0);
+        const int16x8_t vprod3xCDEFc0 = vmull_s8(vbCDEFc0, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va3), 0)));
+        vacc3xCDEF = vpadalq_s16(vacc3xCDEF, vprod3xCDEFc0);
+
+        if (k > 2 * sizeof(int8_t)) {
+          const int8x8_t vb0123c1 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+          const int8x8_t vb4567c1 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+          const int8x8_t vb89ABc1 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+          const int8x8_t vbCDEFc1 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+
+          const int16x8_t vprod0x0123c1 = vmull_s8(vb0123c1, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va0), 1)));
+          vacc0x0123 = vpadalq_s16(vacc0x0123, vprod0x0123c1);
+          const int16x8_t vprod0x4567c1 = vmull_s8(vb4567c1, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va0), 1)));
+          vacc0x4567 = vpadalq_s16(vacc0x4567, vprod0x4567c1);
+          const int16x8_t vprod0x89ABc1 = vmull_s8(vb89ABc1, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va0), 1)));
+          vacc0x89AB = vpadalq_s16(vacc0x89AB, vprod0x89ABc1);
+          const int16x8_t vprod0xCDEFc1 = vmull_s8(vbCDEFc1, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va0), 1)));
+          vacc0xCDEF = vpadalq_s16(vacc0xCDEF, vprod0xCDEFc1);
+          const int16x8_t vprod1x0123c1 = vmull_s8(vb0123c1, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va1), 1)));
+          vacc1x0123 = vpadalq_s16(vacc1x0123, vprod1x0123c1);
+          const int16x8_t vprod1x4567c1 = vmull_s8(vb4567c1, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va1), 1)));
+          vacc1x4567 = vpadalq_s16(vacc1x4567, vprod1x4567c1);
+          const int16x8_t vprod1x89ABc1 = vmull_s8(vb89ABc1, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va1), 1)));
+          vacc1x89AB = vpadalq_s16(vacc1x89AB, vprod1x89ABc1);
+          const int16x8_t vprod1xCDEFc1 = vmull_s8(vbCDEFc1, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va1), 1)));
+          vacc1xCDEF = vpadalq_s16(vacc1xCDEF, vprod1xCDEFc1);
+          const int16x8_t vprod2x0123c1 = vmull_s8(vb0123c1, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va2), 1)));
+          vacc2x0123 = vpadalq_s16(vacc2x0123, vprod2x0123c1);
+          const int16x8_t vprod2x4567c1 = vmull_s8(vb4567c1, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va2), 1)));
+          vacc2x4567 = vpadalq_s16(vacc2x4567, vprod2x4567c1);
+          const int16x8_t vprod2x89ABc1 = vmull_s8(vb89ABc1, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va2), 1)));
+          vacc2x89AB = vpadalq_s16(vacc2x89AB, vprod2x89ABc1);
+          const int16x8_t vprod2xCDEFc1 = vmull_s8(vbCDEFc1, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va2), 1)));
+          vacc2xCDEF = vpadalq_s16(vacc2xCDEF, vprod2xCDEFc1);
+          const int16x8_t vprod3x0123c1 = vmull_s8(vb0123c1, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va3), 1)));
+          vacc3x0123 = vpadalq_s16(vacc3x0123, vprod3x0123c1);
+          const int16x8_t vprod3x4567c1 = vmull_s8(vb4567c1, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va3), 1)));
+          vacc3x4567 = vpadalq_s16(vacc3x4567, vprod3x4567c1);
+          const int16x8_t vprod3x89ABc1 = vmull_s8(vb89ABc1, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va3), 1)));
+          vacc3x89AB = vpadalq_s16(vacc3x89AB, vprod3x89ABc1);
+          const int16x8_t vprod3xCDEFc1 = vmull_s8(vbCDEFc1, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va3), 1)));
+          vacc3xCDEF = vpadalq_s16(vacc3xCDEF, vprod3xCDEFc1);
+
+          if (k > 4 * sizeof(int8_t)) {
+            const int8x8_t vb0123c2 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+            const int8x8_t vb4567c2 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+            const int8x8_t vb89ABc2 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+            const int8x8_t vbCDEFc2 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+
+            const int16x8_t vprod0x0123c2 = vmull_s8(vb0123c2, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va0), 2)));
+            vacc0x0123 = vpadalq_s16(vacc0x0123, vprod0x0123c2);
+            const int16x8_t vprod0x4567c2 = vmull_s8(vb4567c2, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va0), 2)));
+            vacc0x4567 = vpadalq_s16(vacc0x4567, vprod0x4567c2);
+            const int16x8_t vprod0x89ABc2 = vmull_s8(vb89ABc2, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va0), 2)));
+            vacc0x89AB = vpadalq_s16(vacc0x89AB, vprod0x89ABc2);
+            const int16x8_t vprod0xCDEFc2 = vmull_s8(vbCDEFc2, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va0), 2)));
+            vacc0xCDEF = vpadalq_s16(vacc0xCDEF, vprod0xCDEFc2);
+            const int16x8_t vprod1x0123c2 = vmull_s8(vb0123c2, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va1), 2)));
+            vacc1x0123 = vpadalq_s16(vacc1x0123, vprod1x0123c2);
+            const int16x8_t vprod1x4567c2 = vmull_s8(vb4567c2, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va1), 2)));
+            vacc1x4567 = vpadalq_s16(vacc1x4567, vprod1x4567c2);
+            const int16x8_t vprod1x89ABc2 = vmull_s8(vb89ABc2, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va1), 2)));
+            vacc1x89AB = vpadalq_s16(vacc1x89AB, vprod1x89ABc2);
+            const int16x8_t vprod1xCDEFc2 = vmull_s8(vbCDEFc2, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va1), 2)));
+            vacc1xCDEF = vpadalq_s16(vacc1xCDEF, vprod1xCDEFc2);
+            const int16x8_t vprod2x0123c2 = vmull_s8(vb0123c2, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va2), 2)));
+            vacc2x0123 = vpadalq_s16(vacc2x0123, vprod2x0123c2);
+            const int16x8_t vprod2x4567c2 = vmull_s8(vb4567c2, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va2), 2)));
+            vacc2x4567 = vpadalq_s16(vacc2x4567, vprod2x4567c2);
+            const int16x8_t vprod2x89ABc2 = vmull_s8(vb89ABc2, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va2), 2)));
+            vacc2x89AB = vpadalq_s16(vacc2x89AB, vprod2x89ABc2);
+            const int16x8_t vprod2xCDEFc2 = vmull_s8(vbCDEFc2, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va2), 2)));
+            vacc2xCDEF = vpadalq_s16(vacc2xCDEF, vprod2xCDEFc2);
+            const int16x8_t vprod3x0123c2 = vmull_s8(vb0123c2, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va3), 2)));
+            vacc3x0123 = vpadalq_s16(vacc3x0123, vprod3x0123c2);
+            const int16x8_t vprod3x4567c2 = vmull_s8(vb4567c2, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va3), 2)));
+            vacc3x4567 = vpadalq_s16(vacc3x4567, vprod3x4567c2);
+            const int16x8_t vprod3x89ABc2 = vmull_s8(vb89ABc2, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va3), 2)));
+            vacc3x89AB = vpadalq_s16(vacc3x89AB, vprod3x89ABc2);
+            const int16x8_t vprod3xCDEFc2 = vmull_s8(vbCDEFc2, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va3), 2)));
+            vacc3xCDEF = vpadalq_s16(vacc3xCDEF, vprod3xCDEFc2);
+
+            if (k > 6 * sizeof(int8_t)) {
+              const int8x8_t vb0123c2 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+              const int8x8_t vb4567c2 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+              const int8x8_t vb89ABc2 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+              const int8x8_t vbCDEFc2 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+
+              const int16x8_t vprod0x0123c2 = vmull_s8(vb0123c2, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va0), 3)));
+              vacc0x0123 = vpadalq_s16(vacc0x0123, vprod0x0123c2);
+              const int16x8_t vprod0x4567c2 = vmull_s8(vb4567c2, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va0), 3)));
+              vacc0x4567 = vpadalq_s16(vacc0x4567, vprod0x4567c2);
+              const int16x8_t vprod0x89ABc2 = vmull_s8(vb89ABc2, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va0), 3)));
+              vacc0x89AB = vpadalq_s16(vacc0x89AB, vprod0x89ABc2);
+              const int16x8_t vprod0xCDEFc2 = vmull_s8(vbCDEFc2, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va0), 3)));
+              vacc0xCDEF = vpadalq_s16(vacc0xCDEF, vprod0xCDEFc2);
+              const int16x8_t vprod1x0123c2 = vmull_s8(vb0123c2, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va1), 3)));
+              vacc1x0123 = vpadalq_s16(vacc1x0123, vprod1x0123c2);
+              const int16x8_t vprod1x4567c2 = vmull_s8(vb4567c2, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va1), 3)));
+              vacc1x4567 = vpadalq_s16(vacc1x4567, vprod1x4567c2);
+              const int16x8_t vprod1x89ABc2 = vmull_s8(vb89ABc2, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va1), 3)));
+              vacc1x89AB = vpadalq_s16(vacc1x89AB, vprod1x89ABc2);
+              const int16x8_t vprod1xCDEFc2 = vmull_s8(vbCDEFc2, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va1), 3)));
+              vacc1xCDEF = vpadalq_s16(vacc1xCDEF, vprod1xCDEFc2);
+              const int16x8_t vprod2x0123c2 = vmull_s8(vb0123c2, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va2), 3)));
+              vacc2x0123 = vpadalq_s16(vacc2x0123, vprod2x0123c2);
+              const int16x8_t vprod2x4567c2 = vmull_s8(vb4567c2, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va2), 3)));
+              vacc2x4567 = vpadalq_s16(vacc2x4567, vprod2x4567c2);
+              const int16x8_t vprod2x89ABc2 = vmull_s8(vb89ABc2, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va2), 3)));
+              vacc2x89AB = vpadalq_s16(vacc2x89AB, vprod2x89ABc2);
+              const int16x8_t vprod2xCDEFc2 = vmull_s8(vbCDEFc2, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va2), 3)));
+              vacc2xCDEF = vpadalq_s16(vacc2xCDEF, vprod2xCDEFc2);
+              const int16x8_t vprod3x0123c2 = vmull_s8(vb0123c2, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va3), 3)));
+              vacc3x0123 = vpadalq_s16(vacc3x0123, vprod3x0123c2);
+              const int16x8_t vprod3x4567c2 = vmull_s8(vb4567c2, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va3), 3)));
+              vacc3x4567 = vpadalq_s16(vacc3x4567, vprod3x4567c2);
+              const int16x8_t vprod3x89ABc2 = vmull_s8(vb89ABc2, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va3), 3)));
+              vacc3x89AB = vpadalq_s16(vacc3x89AB, vprod3x89ABc2);
+              const int16x8_t vprod3xCDEFc2 = vmull_s8(vbCDEFc2, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va3), 3)));
+              vacc3xCDEF = vpadalq_s16(vacc3xCDEF, vprod3xCDEFc2);
+            }
+          }
+        }
+      }
+      p -= 4 * sizeof(void*);
+    } while (p != 0);
+
+    const int32x4_t vright_pre_shift = vld1q_dup_s32(&params->rndnu_neon.right_pre_shift);
+    const int32x4_t vmultiplier = vld1q_dup_s32(&params->rndnu_neon.multiplier);
+    const int32x4_t vright_post_shift = vld1q_dup_s32(&params->rndnu_neon.right_post_shift);
+
+    vacc0x0123 = vshlq_s32(vacc0x0123, vright_pre_shift);
+    vacc0x4567 = vshlq_s32(vacc0x4567, vright_pre_shift);
+    vacc0x89AB = vshlq_s32(vacc0x89AB, vright_pre_shift);
+    vacc0xCDEF = vshlq_s32(vacc0xCDEF, vright_pre_shift);
+    vacc1x0123 = vshlq_s32(vacc1x0123, vright_pre_shift);
+    vacc1x4567 = vshlq_s32(vacc1x4567, vright_pre_shift);
+    vacc1x89AB = vshlq_s32(vacc1x89AB, vright_pre_shift);
+    vacc1xCDEF = vshlq_s32(vacc1xCDEF, vright_pre_shift);
+    vacc2x0123 = vshlq_s32(vacc2x0123, vright_pre_shift);
+    vacc2x4567 = vshlq_s32(vacc2x4567, vright_pre_shift);
+    vacc2x89AB = vshlq_s32(vacc2x89AB, vright_pre_shift);
+    vacc2xCDEF = vshlq_s32(vacc2xCDEF, vright_pre_shift);
+    vacc3x0123 = vshlq_s32(vacc3x0123, vright_pre_shift);
+    vacc3x4567 = vshlq_s32(vacc3x4567, vright_pre_shift);
+    vacc3x89AB = vshlq_s32(vacc3x89AB, vright_pre_shift);
+    vacc3xCDEF = vshlq_s32(vacc3xCDEF, vright_pre_shift);
+
+    vacc0x0123 = vqdmulhq_s32(vacc0x0123, vmultiplier);
+    vacc0x4567 = vqdmulhq_s32(vacc0x4567, vmultiplier);
+    vacc0x89AB = vqdmulhq_s32(vacc0x89AB, vmultiplier);
+    vacc0xCDEF = vqdmulhq_s32(vacc0xCDEF, vmultiplier);
+    vacc1x0123 = vqdmulhq_s32(vacc1x0123, vmultiplier);
+    vacc1x4567 = vqdmulhq_s32(vacc1x4567, vmultiplier);
+    vacc1x89AB = vqdmulhq_s32(vacc1x89AB, vmultiplier);
+    vacc1xCDEF = vqdmulhq_s32(vacc1xCDEF, vmultiplier);
+    vacc2x0123 = vqdmulhq_s32(vacc2x0123, vmultiplier);
+    vacc2x4567 = vqdmulhq_s32(vacc2x4567, vmultiplier);
+    vacc2x89AB = vqdmulhq_s32(vacc2x89AB, vmultiplier);
+    vacc2xCDEF = vqdmulhq_s32(vacc2xCDEF, vmultiplier);
+    vacc3x0123 = vqdmulhq_s32(vacc3x0123, vmultiplier);
+    vacc3x4567 = vqdmulhq_s32(vacc3x4567, vmultiplier);
+    vacc3x89AB = vqdmulhq_s32(vacc3x89AB, vmultiplier);
+    vacc3xCDEF = vqdmulhq_s32(vacc3xCDEF, vmultiplier);
+
+    vacc0x0123 = vrshlq_s32(vacc0x0123, vright_post_shift);
+    vacc0x4567 = vrshlq_s32(vacc0x4567, vright_post_shift);
+    vacc0x89AB = vrshlq_s32(vacc0x89AB, vright_post_shift);
+    vacc0xCDEF = vrshlq_s32(vacc0xCDEF, vright_post_shift);
+    vacc1x0123 = vrshlq_s32(vacc1x0123, vright_post_shift);
+    vacc1x4567 = vrshlq_s32(vacc1x4567, vright_post_shift);
+    vacc1x89AB = vrshlq_s32(vacc1x89AB, vright_post_shift);
+    vacc1xCDEF = vrshlq_s32(vacc1xCDEF, vright_post_shift);
+    vacc2x0123 = vrshlq_s32(vacc2x0123, vright_post_shift);
+    vacc2x4567 = vrshlq_s32(vacc2x4567, vright_post_shift);
+    vacc2x89AB = vrshlq_s32(vacc2x89AB, vright_post_shift);
+    vacc2xCDEF = vrshlq_s32(vacc2xCDEF, vright_post_shift);
+    vacc3x0123 = vrshlq_s32(vacc3x0123, vright_post_shift);
+    vacc3x4567 = vrshlq_s32(vacc3x4567, vright_post_shift);
+    vacc3x89AB = vrshlq_s32(vacc3x89AB, vright_post_shift);
+    vacc3xCDEF = vrshlq_s32(vacc3xCDEF, vright_post_shift);
+
+    const int16x8_t voutput_zero_point = vld1q_dup_s16(&params->rndnu_neon.output_zero_point);
+#if XNN_ARCH_ARM64
+    const int16x8_t vacc0x01234567 = vqaddq_s16(vqmovn_high_s32(vqmovn_s32(vacc0x0123), vacc0x4567), voutput_zero_point);
+    const int16x8_t vacc0x89ABCDEF = vqaddq_s16(vqmovn_high_s32(vqmovn_s32(vacc0x89AB), vacc0xCDEF), voutput_zero_point);
+    const int16x8_t vacc1x01234567 = vqaddq_s16(vqmovn_high_s32(vqmovn_s32(vacc1x0123), vacc1x4567), voutput_zero_point);
+    const int16x8_t vacc1x89ABCDEF = vqaddq_s16(vqmovn_high_s32(vqmovn_s32(vacc1x89AB), vacc1xCDEF), voutput_zero_point);
+    const int16x8_t vacc2x01234567 = vqaddq_s16(vqmovn_high_s32(vqmovn_s32(vacc2x0123), vacc2x4567), voutput_zero_point);
+    const int16x8_t vacc2x89ABCDEF = vqaddq_s16(vqmovn_high_s32(vqmovn_s32(vacc2x89AB), vacc2xCDEF), voutput_zero_point);
+    const int16x8_t vacc3x01234567 = vqaddq_s16(vqmovn_high_s32(vqmovn_s32(vacc3x0123), vacc3x4567), voutput_zero_point);
+    const int16x8_t vacc3x89ABCDEF = vqaddq_s16(vqmovn_high_s32(vqmovn_s32(vacc3x89AB), vacc3xCDEF), voutput_zero_point);
+
+    int8x16_t vout0x0123456789ABCDEF = vqmovn_high_s16(vqmovn_s16(vacc0x01234567), vacc0x89ABCDEF);
+    int8x16_t vout1x0123456789ABCDEF = vqmovn_high_s16(vqmovn_s16(vacc1x01234567), vacc1x89ABCDEF);
+    int8x16_t vout2x0123456789ABCDEF = vqmovn_high_s16(vqmovn_s16(vacc2x01234567), vacc2x89ABCDEF);
+    int8x16_t vout3x0123456789ABCDEF = vqmovn_high_s16(vqmovn_s16(vacc3x01234567), vacc3x89ABCDEF);
+#else
+    const int16x8_t vacc0x01234567 = vqaddq_s16(vcombine_s16(vqmovn_s32(vacc0x0123), vqmovn_s32(vacc0x4567)), voutput_zero_point);
+    const int16x8_t vacc0x89ABCDEF = vqaddq_s16(vcombine_s16(vqmovn_s32(vacc0x89AB), vqmovn_s32(vacc0xCDEF)), voutput_zero_point);
+    const int16x8_t vacc1x01234567 = vqaddq_s16(vcombine_s16(vqmovn_s32(vacc1x0123), vqmovn_s32(vacc1x4567)), voutput_zero_point);
+    const int16x8_t vacc1x89ABCDEF = vqaddq_s16(vcombine_s16(vqmovn_s32(vacc1x89AB), vqmovn_s32(vacc1xCDEF)), voutput_zero_point);
+    const int16x8_t vacc2x01234567 = vqaddq_s16(vcombine_s16(vqmovn_s32(vacc2x0123), vqmovn_s32(vacc2x4567)), voutput_zero_point);
+    const int16x8_t vacc2x89ABCDEF = vqaddq_s16(vcombine_s16(vqmovn_s32(vacc2x89AB), vqmovn_s32(vacc2xCDEF)), voutput_zero_point);
+    const int16x8_t vacc3x01234567 = vqaddq_s16(vcombine_s16(vqmovn_s32(vacc3x0123), vqmovn_s32(vacc3x4567)), voutput_zero_point);
+    const int16x8_t vacc3x89ABCDEF = vqaddq_s16(vcombine_s16(vqmovn_s32(vacc3x89AB), vqmovn_s32(vacc3xCDEF)), voutput_zero_point);
+
+    int8x16_t vout0x0123456789ABCDEF = vcombine_s8(vqmovn_s16(vacc0x01234567), vqmovn_s16(vacc0x89ABCDEF));
+    int8x16_t vout1x0123456789ABCDEF = vcombine_s8(vqmovn_s16(vacc1x01234567), vqmovn_s16(vacc1x89ABCDEF));
+    int8x16_t vout2x0123456789ABCDEF = vcombine_s8(vqmovn_s16(vacc2x01234567), vqmovn_s16(vacc2x89ABCDEF));
+    int8x16_t vout3x0123456789ABCDEF = vcombine_s8(vqmovn_s16(vacc3x01234567), vqmovn_s16(vacc3x89ABCDEF));
+#endif
+    const int8x16_t voutput_min = vld1q_dup_s8(&params->rndnu_neon.output_min);
+    const int8x16_t voutput_max = vld1q_dup_s8(&params->rndnu_neon.output_max);
+
+    vout3x0123456789ABCDEF = vmaxq_s8(vout3x0123456789ABCDEF, voutput_min);
+    vout2x0123456789ABCDEF = vmaxq_s8(vout2x0123456789ABCDEF, voutput_min);
+    vout1x0123456789ABCDEF = vmaxq_s8(vout1x0123456789ABCDEF, voutput_min);
+    vout0x0123456789ABCDEF = vmaxq_s8(vout0x0123456789ABCDEF, voutput_min);
+
+    vout3x0123456789ABCDEF = vminq_s8(vout3x0123456789ABCDEF, voutput_max);
+    vout2x0123456789ABCDEF = vminq_s8(vout2x0123456789ABCDEF, voutput_max);
+    vout1x0123456789ABCDEF = vminq_s8(vout1x0123456789ABCDEF, voutput_max);
+    vout0x0123456789ABCDEF = vminq_s8(vout0x0123456789ABCDEF, voutput_max);
+
+    if (nc >= 16) {
+      vst1q_s8(c3 + 0, vout3x0123456789ABCDEF);
+      vst1q_s8(c2 + 0, vout2x0123456789ABCDEF);
+      vst1q_s8(c1 + 0, vout1x0123456789ABCDEF);
+      vst1q_s8(c0 + 0, vout0x0123456789ABCDEF);
+
+      c3 = (int8_t*) ((uintptr_t) c3 + cn_stride);
+      c2 = (int8_t*) ((uintptr_t) c2 + cn_stride);
+      c1 = (int8_t*) ((uintptr_t) c1 + cn_stride);
+      c0 = (int8_t*) ((uintptr_t) c0 + cn_stride);
+
+      a = (const int8_t**restrict) ((uintptr_t) a - ks);
+
+      nc -= 16;
+    } else {
+      int8x16_t vout2x01234567_3x01234567 = vcombine_s8(vget_low_s8(vout2x0123456789ABCDEF), vget_low_s8(vout3x0123456789ABCDEF));
+      int8x16_t vout0x01234567_1x01234567 = vcombine_s8(vget_low_s8(vout0x0123456789ABCDEF), vget_low_s8(vout1x0123456789ABCDEF));
+      if (nc & 8) {
+        vst1_s8(c3, vget_high_s8(vout2x01234567_3x01234567)); c3 += 8;
+        vst1_s8(c2, vget_low_s8(vout2x01234567_3x01234567)); c2 += 8;
+        vst1_s8(c1, vget_high_s8(vout0x01234567_1x01234567)); c1 += 8;
+        vst1_s8(c0, vget_low_s8(vout0x01234567_1x01234567)); c0 += 8;
+        vout2x01234567_3x01234567 = vcombine_s8(vget_high_s8(vout2x0123456789ABCDEF), vget_high_s8(vout3x0123456789ABCDEF));
+        vout0x01234567_1x01234567 = vcombine_s8(vget_high_s8(vout0x0123456789ABCDEF), vget_high_s8(vout1x0123456789ABCDEF));
+      }
+      if (nc & 4) {
+        vst1q_lane_u32(__builtin_assume_aligned(c3, 1), vreinterpretq_u32_s8(vout2x01234567_3x01234567), 2); c3 += 4;
+        vst1q_lane_u32(__builtin_assume_aligned(c2, 1), vreinterpretq_u32_s8(vout2x01234567_3x01234567), 0); c2 += 4;
+        vst1q_lane_u32(__builtin_assume_aligned(c1, 1), vreinterpretq_u32_s8(vout0x01234567_1x01234567), 2); c1 += 4;
+        vst1q_lane_u32(__builtin_assume_aligned(c0, 1), vreinterpretq_u32_s8(vout0x01234567_1x01234567), 0); c0 += 4;
+        vout2x01234567_3x01234567 = vextq_s8(vout2x01234567_3x01234567, vout2x01234567_3x01234567, 4);
+        vout0x01234567_1x01234567 = vextq_s8(vout0x01234567_1x01234567, vout0x01234567_1x01234567, 4);
+      }
+      if (nc & 2) {
+        vst1q_lane_u16(__builtin_assume_aligned(c3, 1), vreinterpretq_u16_s8(vout2x01234567_3x01234567), 4); c3 += 2;
+        vst1q_lane_u16(__builtin_assume_aligned(c2, 1), vreinterpretq_u16_s8(vout2x01234567_3x01234567), 0); c2 += 2;
+        vst1q_lane_u16(__builtin_assume_aligned(c1, 1), vreinterpretq_u16_s8(vout0x01234567_1x01234567), 4); c1 += 2;
+        vst1q_lane_u16(__builtin_assume_aligned(c0, 1), vreinterpretq_u16_s8(vout0x01234567_1x01234567), 0); c0 += 2;
+        vout2x01234567_3x01234567 = vextq_s8(vout2x01234567_3x01234567, vout2x01234567_3x01234567, 2);
+        vout0x01234567_1x01234567 = vextq_s8(vout0x01234567_1x01234567, vout0x01234567_1x01234567, 2);
+      }
+      if (nc & 1) {
+        vst1q_lane_s8(c3, vout2x01234567_3x01234567, 8);
+        vst1q_lane_s8(c2, vout2x01234567_3x01234567, 0);
+        vst1q_lane_s8(c1, vout0x01234567_1x01234567, 8);
+        vst1q_lane_s8(c0, vout0x01234567_1x01234567, 0);
+      }
+
+      nc = 0;
+    }
+  } while (nc != 0);
+}
diff --git a/src/qs8-igemm/gen/4x8c2s4-minmax-rndnu-neon-mlal-padal.c b/src/qs8-igemm/gen/4x8c2s4-minmax-rndnu-neon-mlal-padal.c
new file mode 100644
index 0000000..50b76ac
--- /dev/null
+++ b/src/qs8-igemm/gen/4x8c2s4-minmax-rndnu-neon-mlal-padal.c
@@ -0,0 +1,529 @@
+// Auto-generated file. Do not edit!
+//   Template: src/qs8-igemm/c2-neon-mull-padal-shuffle.c.in
+//   Generator: tools/xngen
+//
+// Copyright 2021 Google LLC
+//
+// This source code is licensed under the BSD-style license found in the
+// LICENSE file in the root directory of this source tree.
+
+#include <assert.h>
+
+#include <arm_neon.h>
+
+#include <xnnpack/gemm.h>
+#include <xnnpack/math.h>
+
+
+void xnn_qs8_igemm_minmax_rndnu_ukernel_4x8c2s4__neon_mlal_padal(
+    size_t mr,
+    size_t nc,
+    size_t kc,
+    size_t ks,
+    const int8_t** restrict a,
+    const void* restrict w,
+    int8_t* restrict c,
+    size_t cm_stride,
+    size_t cn_stride,
+    size_t a_offset,
+    const int8_t* zero,
+    const union xnn_qs8_conv_minmax_params params[restrict XNN_MIN_ELEMENTS(1)]) XNN_DISABLE_TSAN XNN_DISABLE_MSAN
+{
+  assert(mr != 0);
+  assert(mr <= 4);
+  assert(nc != 0);
+  assert(kc != 0);
+  assert(ks != 0);
+  assert(ks % (4 * sizeof(void*)) == 0);
+  assert(a_offset % sizeof(int8_t) == 0);
+  assert(a != NULL);
+  assert(w != NULL);
+  assert(c != NULL);
+
+  int8_t* c0 = c;
+  int8_t* c1 = (int8_t*) ((uintptr_t) c0 + cm_stride);
+  if XNN_UNPREDICTABLE(mr < 2) {
+    c1 = c0;
+  }
+  int8_t* c2 = (int8_t*) ((uintptr_t) c1 + cm_stride);
+  if XNN_UNPREDICTABLE(mr <= 2) {
+    c2 = c1;
+  }
+  int8_t* c3 = (int8_t*) ((uintptr_t) c2 + cm_stride);
+  if XNN_UNPREDICTABLE(mr != 4) {
+    c3 = c2;
+  }
+
+  do {
+    int32x4_t vacc0x0123 = vld1q_s32(w); w = (const void*) ((uintptr_t) w + 4 * sizeof(int32_t));
+    int32x4_t vacc0x4567 = vld1q_s32(w); w = (const void*) ((uintptr_t) w + 4 * sizeof(int32_t));
+    int32x4_t vacc1x0123 = vacc0x0123;
+    int32x4_t vacc1x4567 = vacc0x4567;
+    int32x4_t vacc2x0123 = vacc0x0123;
+    int32x4_t vacc2x4567 = vacc0x4567;
+    int32x4_t vacc3x0123 = vacc0x0123;
+    int32x4_t vacc3x4567 = vacc0x4567;
+
+    size_t p = ks;
+    do {
+      const int8_t* restrict a0 = a[0];
+      if XNN_UNPREDICTABLE(a0 != zero) {
+        a0 = (const int8_t*) ((uintptr_t) a0 + a_offset);
+      }
+      const int8_t* restrict a1 = a[1];
+      if XNN_UNPREDICTABLE(a1 != zero) {
+        a1 = (const int8_t*) ((uintptr_t) a1 + a_offset);
+      }
+      const int8_t* restrict a2 = a[2];
+      if XNN_UNPREDICTABLE(a2 != zero) {
+        a2 = (const int8_t*) ((uintptr_t) a2 + a_offset);
+      }
+      const int8_t* restrict a3 = a[3];
+      if XNN_UNPREDICTABLE(a3 != zero) {
+        a3 = (const int8_t*) ((uintptr_t) a3 + a_offset);
+      }
+      a += 4;
+
+      size_t k = kc;
+
+      while (k >= 16 * sizeof(int8_t)) {
+        int8x8_t va0x0 = vld1_s8(a0); a0 += 8;
+        int8x8_t va0x1 = vld1_s8(a0); a0 += 8;
+        int8x8_t va1x0 = vld1_s8(a1); a1 += 8;
+        int8x8_t va1x1 = vld1_s8(a1); a1 += 8;
+        int8x8_t va2x0 = vld1_s8(a2); a2 += 8;
+        int8x8_t va2x1 = vld1_s8(a2); a2 += 8;
+        int8x8_t va3x0 = vld1_s8(a3); a3 += 8;
+        int8x8_t va3x1 = vld1_s8(a3); a3 += 8;
+
+        const int8x8_t vb0123c0x0 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+        const int8x8_t vb4567c0x0 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+        const int8x8_t vb0123c1x0 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+        const int8x8_t vb4567c1x0 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+        const int8x8_t vb0123c2x0 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+        const int8x8_t vb4567c2x0 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+        const int8x8_t vb0123c3x0 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+        const int8x8_t vb4567c3x0 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+
+        int16x8_t vprod0x0123c0 = vmull_s8(vb0123c0x0, va0x0);
+        int16x8_t vprod1x0123c0 = vmull_s8(vb0123c0x0, va1x0);
+        int16x8_t vprod2x0123c0 = vmull_s8(vb0123c0x0, va2x0);
+        int16x8_t vprod3x0123c0 = vmull_s8(vb0123c0x0, va3x0);
+        const int8x8_t vb0123c0x1 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+        vprod0x0123c0 = vmlal_s8(vprod0x0123c0, vb0123c0x1, va0x1);
+        vprod1x0123c0 = vmlal_s8(vprod1x0123c0, vb0123c0x1, va1x1);
+        vprod2x0123c0 = vmlal_s8(vprod2x0123c0, vb0123c0x1, va2x1);
+        vprod3x0123c0 = vmlal_s8(vprod3x0123c0, vb0123c0x1, va3x1);
+        vacc0x0123 = vpadalq_s16(vacc0x0123, vprod0x0123c0);
+        vacc1x0123 = vpadalq_s16(vacc1x0123, vprod1x0123c0);
+        vacc2x0123 = vpadalq_s16(vacc2x0123, vprod2x0123c0);
+        vacc3x0123 = vpadalq_s16(vacc3x0123, vprod3x0123c0);
+        int16x8_t vprod0x4567c0 = vmull_s8(vb4567c0x0, va0x0);
+        int16x8_t vprod1x4567c0 = vmull_s8(vb4567c0x0, va1x0);
+        int16x8_t vprod2x4567c0 = vmull_s8(vb4567c0x0, va2x0);
+        int16x8_t vprod3x4567c0 = vmull_s8(vb4567c0x0, va3x0);
+        const int8x8_t vb4567c0x1 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+        vprod0x4567c0 = vmlal_s8(vprod0x4567c0, vb4567c0x1, va0x1);
+        vprod1x4567c0 = vmlal_s8(vprod1x4567c0, vb4567c0x1, va1x1);
+        vprod2x4567c0 = vmlal_s8(vprod2x4567c0, vb4567c0x1, va2x1);
+        vprod3x4567c0 = vmlal_s8(vprod3x4567c0, vb4567c0x1, va3x1);
+        vacc0x4567 = vpadalq_s16(vacc0x4567, vprod0x4567c0);
+        vacc1x4567 = vpadalq_s16(vacc1x4567, vprod1x4567c0);
+        vacc2x4567 = vpadalq_s16(vacc2x4567, vprod2x4567c0);
+        vacc3x4567 = vpadalq_s16(vacc3x4567, vprod3x4567c0);
+        va0x0 = vext_s8(va0x0, va0x0, 2);
+        va0x1 = vext_s8(va0x1, va0x1, 2);
+        va1x0 = vext_s8(va1x0, va1x0, 2);
+        va1x1 = vext_s8(va1x1, va1x1, 2);
+        va2x0 = vext_s8(va2x0, va2x0, 2);
+        va2x1 = vext_s8(va2x1, va2x1, 2);
+        va3x0 = vext_s8(va3x0, va3x0, 2);
+        va3x1 = vext_s8(va3x1, va3x1, 2);
+        int16x8_t vprod0x0123c1 = vmull_s8(vb0123c1x0, va0x0);
+        int16x8_t vprod1x0123c1 = vmull_s8(vb0123c1x0, va1x0);
+        int16x8_t vprod2x0123c1 = vmull_s8(vb0123c1x0, va2x0);
+        int16x8_t vprod3x0123c1 = vmull_s8(vb0123c1x0, va3x0);
+        const int8x8_t vb0123c1x1 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+        vprod0x0123c1 = vmlal_s8(vprod0x0123c1, vb0123c1x1, va0x1);
+        vprod1x0123c1 = vmlal_s8(vprod1x0123c1, vb0123c1x1, va1x1);
+        vprod2x0123c1 = vmlal_s8(vprod2x0123c1, vb0123c1x1, va2x1);
+        vprod3x0123c1 = vmlal_s8(vprod3x0123c1, vb0123c1x1, va3x1);
+        vacc0x0123 = vpadalq_s16(vacc0x0123, vprod0x0123c1);
+        vacc1x0123 = vpadalq_s16(vacc1x0123, vprod1x0123c1);
+        vacc2x0123 = vpadalq_s16(vacc2x0123, vprod2x0123c1);
+        vacc3x0123 = vpadalq_s16(vacc3x0123, vprod3x0123c1);
+        int16x8_t vprod0x4567c1 = vmull_s8(vb4567c1x0, va0x0);
+        int16x8_t vprod1x4567c1 = vmull_s8(vb4567c1x0, va1x0);
+        int16x8_t vprod2x4567c1 = vmull_s8(vb4567c1x0, va2x0);
+        int16x8_t vprod3x4567c1 = vmull_s8(vb4567c1x0, va3x0);
+        const int8x8_t vb4567c1x1 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+        vprod0x4567c1 = vmlal_s8(vprod0x4567c1, vb4567c1x1, va0x1);
+        vprod1x4567c1 = vmlal_s8(vprod1x4567c1, vb4567c1x1, va1x1);
+        vprod2x4567c1 = vmlal_s8(vprod2x4567c1, vb4567c1x1, va2x1);
+        vprod3x4567c1 = vmlal_s8(vprod3x4567c1, vb4567c1x1, va3x1);
+        vacc0x4567 = vpadalq_s16(vacc0x4567, vprod0x4567c1);
+        vacc1x4567 = vpadalq_s16(vacc1x4567, vprod1x4567c1);
+        vacc2x4567 = vpadalq_s16(vacc2x4567, vprod2x4567c1);
+        vacc3x4567 = vpadalq_s16(vacc3x4567, vprod3x4567c1);
+        va0x0 = vext_s8(va0x0, va0x0, 2);
+        va0x1 = vext_s8(va0x1, va0x1, 2);
+        va1x0 = vext_s8(va1x0, va1x0, 2);
+        va1x1 = vext_s8(va1x1, va1x1, 2);
+        va2x0 = vext_s8(va2x0, va2x0, 2);
+        va2x1 = vext_s8(va2x1, va2x1, 2);
+        va3x0 = vext_s8(va3x0, va3x0, 2);
+        va3x1 = vext_s8(va3x1, va3x1, 2);
+        int16x8_t vprod0x0123c2 = vmull_s8(vb0123c2x0, va0x0);
+        int16x8_t vprod1x0123c2 = vmull_s8(vb0123c2x0, va1x0);
+        int16x8_t vprod2x0123c2 = vmull_s8(vb0123c2x0, va2x0);
+        int16x8_t vprod3x0123c2 = vmull_s8(vb0123c2x0, va3x0);
+        const int8x8_t vb0123c2x1 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+        vprod0x0123c2 = vmlal_s8(vprod0x0123c2, vb0123c2x1, va0x1);
+        vprod1x0123c2 = vmlal_s8(vprod1x0123c2, vb0123c2x1, va1x1);
+        vprod2x0123c2 = vmlal_s8(vprod2x0123c2, vb0123c2x1, va2x1);
+        vprod3x0123c2 = vmlal_s8(vprod3x0123c2, vb0123c2x1, va3x1);
+        vacc0x0123 = vpadalq_s16(vacc0x0123, vprod0x0123c2);
+        vacc1x0123 = vpadalq_s16(vacc1x0123, vprod1x0123c2);
+        vacc2x0123 = vpadalq_s16(vacc2x0123, vprod2x0123c2);
+        vacc3x0123 = vpadalq_s16(vacc3x0123, vprod3x0123c2);
+        int16x8_t vprod0x4567c2 = vmull_s8(vb4567c2x0, va0x0);
+        int16x8_t vprod1x4567c2 = vmull_s8(vb4567c2x0, va1x0);
+        int16x8_t vprod2x4567c2 = vmull_s8(vb4567c2x0, va2x0);
+        int16x8_t vprod3x4567c2 = vmull_s8(vb4567c2x0, va3x0);
+        const int8x8_t vb4567c2x1 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+        vprod0x4567c2 = vmlal_s8(vprod0x4567c2, vb4567c2x1, va0x1);
+        vprod1x4567c2 = vmlal_s8(vprod1x4567c2, vb4567c2x1, va1x1);
+        vprod2x4567c2 = vmlal_s8(vprod2x4567c2, vb4567c2x1, va2x1);
+        vprod3x4567c2 = vmlal_s8(vprod3x4567c2, vb4567c2x1, va3x1);
+        vacc0x4567 = vpadalq_s16(vacc0x4567, vprod0x4567c2);
+        vacc1x4567 = vpadalq_s16(vacc1x4567, vprod1x4567c2);
+        vacc2x4567 = vpadalq_s16(vacc2x4567, vprod2x4567c2);
+        vacc3x4567 = vpadalq_s16(vacc3x4567, vprod3x4567c2);
+        va0x0 = vext_s8(va0x0, va0x0, 2);
+        va0x1 = vext_s8(va0x1, va0x1, 2);
+        va1x0 = vext_s8(va1x0, va1x0, 2);
+        va1x1 = vext_s8(va1x1, va1x1, 2);
+        va2x0 = vext_s8(va2x0, va2x0, 2);
+        va2x1 = vext_s8(va2x1, va2x1, 2);
+        va3x0 = vext_s8(va3x0, va3x0, 2);
+        va3x1 = vext_s8(va3x1, va3x1, 2);
+        int16x8_t vprod0x0123c3 = vmull_s8(vb0123c3x0, va0x0);
+        int16x8_t vprod1x0123c3 = vmull_s8(vb0123c3x0, va1x0);
+        int16x8_t vprod2x0123c3 = vmull_s8(vb0123c3x0, va2x0);
+        int16x8_t vprod3x0123c3 = vmull_s8(vb0123c3x0, va3x0);
+        const int8x8_t vb0123c3x1 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+        vprod0x0123c3 = vmlal_s8(vprod0x0123c3, vb0123c3x1, va0x1);
+        vprod1x0123c3 = vmlal_s8(vprod1x0123c3, vb0123c3x1, va1x1);
+        vprod2x0123c3 = vmlal_s8(vprod2x0123c3, vb0123c3x1, va2x1);
+        vprod3x0123c3 = vmlal_s8(vprod3x0123c3, vb0123c3x1, va3x1);
+        vacc0x0123 = vpadalq_s16(vacc0x0123, vprod0x0123c3);
+        vacc1x0123 = vpadalq_s16(vacc1x0123, vprod1x0123c3);
+        vacc2x0123 = vpadalq_s16(vacc2x0123, vprod2x0123c3);
+        vacc3x0123 = vpadalq_s16(vacc3x0123, vprod3x0123c3);
+        int16x8_t vprod0x4567c3 = vmull_s8(vb4567c3x0, va0x0);
+        int16x8_t vprod1x4567c3 = vmull_s8(vb4567c3x0, va1x0);
+        int16x8_t vprod2x4567c3 = vmull_s8(vb4567c3x0, va2x0);
+        int16x8_t vprod3x4567c3 = vmull_s8(vb4567c3x0, va3x0);
+        const int8x8_t vb4567c3x1 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+        vprod0x4567c3 = vmlal_s8(vprod0x4567c3, vb4567c3x1, va0x1);
+        vprod1x4567c3 = vmlal_s8(vprod1x4567c3, vb4567c3x1, va1x1);
+        vprod2x4567c3 = vmlal_s8(vprod2x4567c3, vb4567c3x1, va2x1);
+        vprod3x4567c3 = vmlal_s8(vprod3x4567c3, vb4567c3x1, va3x1);
+        vacc0x4567 = vpadalq_s16(vacc0x4567, vprod0x4567c3);
+        vacc1x4567 = vpadalq_s16(vacc1x4567, vprod1x4567c3);
+        vacc2x4567 = vpadalq_s16(vacc2x4567, vprod2x4567c3);
+        vacc3x4567 = vpadalq_s16(vacc3x4567, vprod3x4567c3);
+
+        k -= 16 * sizeof(int8_t);
+      }
+
+      if (k >= 8 * sizeof(int8_t)) {
+        int8x8_t va0x0 = vld1_s8(a0); a0 += 8;
+        int8x8_t va1x0 = vld1_s8(a1); a1 += 8;
+        int8x8_t va2x0 = vld1_s8(a2); a2 += 8;
+        int8x8_t va3x0 = vld1_s8(a3); a3 += 8;
+
+        const int8x8_t vb0123c0x0 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+        const int8x8_t vb4567c0x0 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+        const int8x8_t vb0123c1x0 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+        const int8x8_t vb4567c1x0 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+        const int8x8_t vb0123c2x0 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+        const int8x8_t vb4567c2x0 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+        const int8x8_t vb0123c3x0 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+        const int8x8_t vb4567c3x0 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+
+        int16x8_t vprod0x0123c0 = vmull_s8(vb0123c0x0, va0x0);
+        int16x8_t vprod1x0123c0 = vmull_s8(vb0123c0x0, va1x0);
+        int16x8_t vprod2x0123c0 = vmull_s8(vb0123c0x0, va2x0);
+        int16x8_t vprod3x0123c0 = vmull_s8(vb0123c0x0, va3x0);
+        vacc0x0123 = vpadalq_s16(vacc0x0123, vprod0x0123c0);
+        vacc1x0123 = vpadalq_s16(vacc1x0123, vprod1x0123c0);
+        vacc2x0123 = vpadalq_s16(vacc2x0123, vprod2x0123c0);
+        vacc3x0123 = vpadalq_s16(vacc3x0123, vprod3x0123c0);
+        int16x8_t vprod0x4567c0 = vmull_s8(vb4567c0x0, va0x0);
+        int16x8_t vprod1x4567c0 = vmull_s8(vb4567c0x0, va1x0);
+        int16x8_t vprod2x4567c0 = vmull_s8(vb4567c0x0, va2x0);
+        int16x8_t vprod3x4567c0 = vmull_s8(vb4567c0x0, va3x0);
+        vacc0x4567 = vpadalq_s16(vacc0x4567, vprod0x4567c0);
+        vacc1x4567 = vpadalq_s16(vacc1x4567, vprod1x4567c0);
+        vacc2x4567 = vpadalq_s16(vacc2x4567, vprod2x4567c0);
+        vacc3x4567 = vpadalq_s16(vacc3x4567, vprod3x4567c0);
+        va0x0 = vext_s8(va0x0, va0x0, 2);
+        va1x0 = vext_s8(va1x0, va1x0, 2);
+        va2x0 = vext_s8(va2x0, va2x0, 2);
+        va3x0 = vext_s8(va3x0, va3x0, 2);
+        int16x8_t vprod0x0123c1 = vmull_s8(vb0123c1x0, va0x0);
+        int16x8_t vprod1x0123c1 = vmull_s8(vb0123c1x0, va1x0);
+        int16x8_t vprod2x0123c1 = vmull_s8(vb0123c1x0, va2x0);
+        int16x8_t vprod3x0123c1 = vmull_s8(vb0123c1x0, va3x0);
+        vacc0x0123 = vpadalq_s16(vacc0x0123, vprod0x0123c1);
+        vacc1x0123 = vpadalq_s16(vacc1x0123, vprod1x0123c1);
+        vacc2x0123 = vpadalq_s16(vacc2x0123, vprod2x0123c1);
+        vacc3x0123 = vpadalq_s16(vacc3x0123, vprod3x0123c1);
+        int16x8_t vprod0x4567c1 = vmull_s8(vb4567c1x0, va0x0);
+        int16x8_t vprod1x4567c1 = vmull_s8(vb4567c1x0, va1x0);
+        int16x8_t vprod2x4567c1 = vmull_s8(vb4567c1x0, va2x0);
+        int16x8_t vprod3x4567c1 = vmull_s8(vb4567c1x0, va3x0);
+        vacc0x4567 = vpadalq_s16(vacc0x4567, vprod0x4567c1);
+        vacc1x4567 = vpadalq_s16(vacc1x4567, vprod1x4567c1);
+        vacc2x4567 = vpadalq_s16(vacc2x4567, vprod2x4567c1);
+        vacc3x4567 = vpadalq_s16(vacc3x4567, vprod3x4567c1);
+        va0x0 = vext_s8(va0x0, va0x0, 2);
+        va1x0 = vext_s8(va1x0, va1x0, 2);
+        va2x0 = vext_s8(va2x0, va2x0, 2);
+        va3x0 = vext_s8(va3x0, va3x0, 2);
+        int16x8_t vprod0x0123c2 = vmull_s8(vb0123c2x0, va0x0);
+        int16x8_t vprod1x0123c2 = vmull_s8(vb0123c2x0, va1x0);
+        int16x8_t vprod2x0123c2 = vmull_s8(vb0123c2x0, va2x0);
+        int16x8_t vprod3x0123c2 = vmull_s8(vb0123c2x0, va3x0);
+        vacc0x0123 = vpadalq_s16(vacc0x0123, vprod0x0123c2);
+        vacc1x0123 = vpadalq_s16(vacc1x0123, vprod1x0123c2);
+        vacc2x0123 = vpadalq_s16(vacc2x0123, vprod2x0123c2);
+        vacc3x0123 = vpadalq_s16(vacc3x0123, vprod3x0123c2);
+        int16x8_t vprod0x4567c2 = vmull_s8(vb4567c2x0, va0x0);
+        int16x8_t vprod1x4567c2 = vmull_s8(vb4567c2x0, va1x0);
+        int16x8_t vprod2x4567c2 = vmull_s8(vb4567c2x0, va2x0);
+        int16x8_t vprod3x4567c2 = vmull_s8(vb4567c2x0, va3x0);
+        vacc0x4567 = vpadalq_s16(vacc0x4567, vprod0x4567c2);
+        vacc1x4567 = vpadalq_s16(vacc1x4567, vprod1x4567c2);
+        vacc2x4567 = vpadalq_s16(vacc2x4567, vprod2x4567c2);
+        vacc3x4567 = vpadalq_s16(vacc3x4567, vprod3x4567c2);
+        va0x0 = vext_s8(va0x0, va0x0, 2);
+        va1x0 = vext_s8(va1x0, va1x0, 2);
+        va2x0 = vext_s8(va2x0, va2x0, 2);
+        va3x0 = vext_s8(va3x0, va3x0, 2);
+        int16x8_t vprod0x0123c3 = vmull_s8(vb0123c3x0, va0x0);
+        int16x8_t vprod1x0123c3 = vmull_s8(vb0123c3x0, va1x0);
+        int16x8_t vprod2x0123c3 = vmull_s8(vb0123c3x0, va2x0);
+        int16x8_t vprod3x0123c3 = vmull_s8(vb0123c3x0, va3x0);
+        vacc0x0123 = vpadalq_s16(vacc0x0123, vprod0x0123c3);
+        vacc1x0123 = vpadalq_s16(vacc1x0123, vprod1x0123c3);
+        vacc2x0123 = vpadalq_s16(vacc2x0123, vprod2x0123c3);
+        vacc3x0123 = vpadalq_s16(vacc3x0123, vprod3x0123c3);
+        int16x8_t vprod0x4567c3 = vmull_s8(vb4567c3x0, va0x0);
+        int16x8_t vprod1x4567c3 = vmull_s8(vb4567c3x0, va1x0);
+        int16x8_t vprod2x4567c3 = vmull_s8(vb4567c3x0, va2x0);
+        int16x8_t vprod3x4567c3 = vmull_s8(vb4567c3x0, va3x0);
+        vacc0x4567 = vpadalq_s16(vacc0x4567, vprod0x4567c3);
+        vacc1x4567 = vpadalq_s16(vacc1x4567, vprod1x4567c3);
+        vacc2x4567 = vpadalq_s16(vacc2x4567, vprod2x4567c3);
+        vacc3x4567 = vpadalq_s16(vacc3x4567, vprod3x4567c3);
+
+        k -= 8 * sizeof(int8_t);
+      }
+
+      if XNN_UNLIKELY(k != 0) {
+        const int8x8_t va0 = vld1_s8(a0); a0 = (const int8_t*) ((uintptr_t) a0 + k);
+        const int8x8_t va1 = vld1_s8(a1); a1 = (const int8_t*) ((uintptr_t) a1 + k);
+        const int8x8_t va2 = vld1_s8(a2); a2 = (const int8_t*) ((uintptr_t) a2 + k);
+        const int8x8_t va3 = vld1_s8(a3); a3 = (const int8_t*) ((uintptr_t) a3 + k);
+
+        const int8x8_t vb0123c0 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+        const int8x8_t vb4567c0 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+
+        const int16x8_t vprod0x0123c0 = vmull_s8(vb0123c0, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va0), 0)));
+        vacc0x0123 = vpadalq_s16(vacc0x0123, vprod0x0123c0);
+        const int16x8_t vprod0x4567c0 = vmull_s8(vb4567c0, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va0), 0)));
+        vacc0x4567 = vpadalq_s16(vacc0x4567, vprod0x4567c0);
+        const int16x8_t vprod1x0123c0 = vmull_s8(vb0123c0, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va1), 0)));
+        vacc1x0123 = vpadalq_s16(vacc1x0123, vprod1x0123c0);
+        const int16x8_t vprod1x4567c0 = vmull_s8(vb4567c0, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va1), 0)));
+        vacc1x4567 = vpadalq_s16(vacc1x4567, vprod1x4567c0);
+        const int16x8_t vprod2x0123c0 = vmull_s8(vb0123c0, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va2), 0)));
+        vacc2x0123 = vpadalq_s16(vacc2x0123, vprod2x0123c0);
+        const int16x8_t vprod2x4567c0 = vmull_s8(vb4567c0, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va2), 0)));
+        vacc2x4567 = vpadalq_s16(vacc2x4567, vprod2x4567c0);
+        const int16x8_t vprod3x0123c0 = vmull_s8(vb0123c0, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va3), 0)));
+        vacc3x0123 = vpadalq_s16(vacc3x0123, vprod3x0123c0);
+        const int16x8_t vprod3x4567c0 = vmull_s8(vb4567c0, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va3), 0)));
+        vacc3x4567 = vpadalq_s16(vacc3x4567, vprod3x4567c0);
+
+        if (k > 2 * sizeof(int8_t)) {
+          const int8x8_t vb0123c1 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+          const int8x8_t vb4567c1 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+
+          const int16x8_t vprod0x0123c1 = vmull_s8(vb0123c1, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va0), 1)));
+          vacc0x0123 = vpadalq_s16(vacc0x0123, vprod0x0123c1);
+          const int16x8_t vprod0x4567c1 = vmull_s8(vb4567c1, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va0), 1)));
+          vacc0x4567 = vpadalq_s16(vacc0x4567, vprod0x4567c1);
+          const int16x8_t vprod1x0123c1 = vmull_s8(vb0123c1, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va1), 1)));
+          vacc1x0123 = vpadalq_s16(vacc1x0123, vprod1x0123c1);
+          const int16x8_t vprod1x4567c1 = vmull_s8(vb4567c1, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va1), 1)));
+          vacc1x4567 = vpadalq_s16(vacc1x4567, vprod1x4567c1);
+          const int16x8_t vprod2x0123c1 = vmull_s8(vb0123c1, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va2), 1)));
+          vacc2x0123 = vpadalq_s16(vacc2x0123, vprod2x0123c1);
+          const int16x8_t vprod2x4567c1 = vmull_s8(vb4567c1, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va2), 1)));
+          vacc2x4567 = vpadalq_s16(vacc2x4567, vprod2x4567c1);
+          const int16x8_t vprod3x0123c1 = vmull_s8(vb0123c1, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va3), 1)));
+          vacc3x0123 = vpadalq_s16(vacc3x0123, vprod3x0123c1);
+          const int16x8_t vprod3x4567c1 = vmull_s8(vb4567c1, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va3), 1)));
+          vacc3x4567 = vpadalq_s16(vacc3x4567, vprod3x4567c1);
+
+          if (k > 4 * sizeof(int8_t)) {
+            const int8x8_t vb0123c2 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+            const int8x8_t vb4567c2 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+
+            const int16x8_t vprod0x0123c2 = vmull_s8(vb0123c2, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va0), 2)));
+            vacc0x0123 = vpadalq_s16(vacc0x0123, vprod0x0123c2);
+            const int16x8_t vprod0x4567c2 = vmull_s8(vb4567c2, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va0), 2)));
+            vacc0x4567 = vpadalq_s16(vacc0x4567, vprod0x4567c2);
+            const int16x8_t vprod1x0123c2 = vmull_s8(vb0123c2, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va1), 2)));
+            vacc1x0123 = vpadalq_s16(vacc1x0123, vprod1x0123c2);
+            const int16x8_t vprod1x4567c2 = vmull_s8(vb4567c2, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va1), 2)));
+            vacc1x4567 = vpadalq_s16(vacc1x4567, vprod1x4567c2);
+            const int16x8_t vprod2x0123c2 = vmull_s8(vb0123c2, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va2), 2)));
+            vacc2x0123 = vpadalq_s16(vacc2x0123, vprod2x0123c2);
+            const int16x8_t vprod2x4567c2 = vmull_s8(vb4567c2, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va2), 2)));
+            vacc2x4567 = vpadalq_s16(vacc2x4567, vprod2x4567c2);
+            const int16x8_t vprod3x0123c2 = vmull_s8(vb0123c2, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va3), 2)));
+            vacc3x0123 = vpadalq_s16(vacc3x0123, vprod3x0123c2);
+            const int16x8_t vprod3x4567c2 = vmull_s8(vb4567c2, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va3), 2)));
+            vacc3x4567 = vpadalq_s16(vacc3x4567, vprod3x4567c2);
+
+            if (k > 6 * sizeof(int8_t)) {
+              const int8x8_t vb0123c2 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+              const int8x8_t vb4567c2 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+
+              const int16x8_t vprod0x0123c2 = vmull_s8(vb0123c2, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va0), 3)));
+              vacc0x0123 = vpadalq_s16(vacc0x0123, vprod0x0123c2);
+              const int16x8_t vprod0x4567c2 = vmull_s8(vb4567c2, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va0), 3)));
+              vacc0x4567 = vpadalq_s16(vacc0x4567, vprod0x4567c2);
+              const int16x8_t vprod1x0123c2 = vmull_s8(vb0123c2, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va1), 3)));
+              vacc1x0123 = vpadalq_s16(vacc1x0123, vprod1x0123c2);
+              const int16x8_t vprod1x4567c2 = vmull_s8(vb4567c2, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va1), 3)));
+              vacc1x4567 = vpadalq_s16(vacc1x4567, vprod1x4567c2);
+              const int16x8_t vprod2x0123c2 = vmull_s8(vb0123c2, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va2), 3)));
+              vacc2x0123 = vpadalq_s16(vacc2x0123, vprod2x0123c2);
+              const int16x8_t vprod2x4567c2 = vmull_s8(vb4567c2, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va2), 3)));
+              vacc2x4567 = vpadalq_s16(vacc2x4567, vprod2x4567c2);
+              const int16x8_t vprod3x0123c2 = vmull_s8(vb0123c2, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va3), 3)));
+              vacc3x0123 = vpadalq_s16(vacc3x0123, vprod3x0123c2);
+              const int16x8_t vprod3x4567c2 = vmull_s8(vb4567c2, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va3), 3)));
+              vacc3x4567 = vpadalq_s16(vacc3x4567, vprod3x4567c2);
+            }
+          }
+        }
+      }
+      p -= 4 * sizeof(void*);
+    } while (p != 0);
+
+    const int32x4_t vright_pre_shift = vld1q_dup_s32(&params->rndnu_neon.right_pre_shift);
+    const int32x4_t vmultiplier = vld1q_dup_s32(&params->rndnu_neon.multiplier);
+    const int32x4_t vright_post_shift = vld1q_dup_s32(&params->rndnu_neon.right_post_shift);
+
+    vacc0x0123 = vshlq_s32(vacc0x0123, vright_pre_shift);
+    vacc0x4567 = vshlq_s32(vacc0x4567, vright_pre_shift);
+    vacc1x0123 = vshlq_s32(vacc1x0123, vright_pre_shift);
+    vacc1x4567 = vshlq_s32(vacc1x4567, vright_pre_shift);
+    vacc2x0123 = vshlq_s32(vacc2x0123, vright_pre_shift);
+    vacc2x4567 = vshlq_s32(vacc2x4567, vright_pre_shift);
+    vacc3x0123 = vshlq_s32(vacc3x0123, vright_pre_shift);
+    vacc3x4567 = vshlq_s32(vacc3x4567, vright_pre_shift);
+
+    vacc0x0123 = vqdmulhq_s32(vacc0x0123, vmultiplier);
+    vacc0x4567 = vqdmulhq_s32(vacc0x4567, vmultiplier);
+    vacc1x0123 = vqdmulhq_s32(vacc1x0123, vmultiplier);
+    vacc1x4567 = vqdmulhq_s32(vacc1x4567, vmultiplier);
+    vacc2x0123 = vqdmulhq_s32(vacc2x0123, vmultiplier);
+    vacc2x4567 = vqdmulhq_s32(vacc2x4567, vmultiplier);
+    vacc3x0123 = vqdmulhq_s32(vacc3x0123, vmultiplier);
+    vacc3x4567 = vqdmulhq_s32(vacc3x4567, vmultiplier);
+
+    vacc0x0123 = vrshlq_s32(vacc0x0123, vright_post_shift);
+    vacc0x4567 = vrshlq_s32(vacc0x4567, vright_post_shift);
+    vacc1x0123 = vrshlq_s32(vacc1x0123, vright_post_shift);
+    vacc1x4567 = vrshlq_s32(vacc1x4567, vright_post_shift);
+    vacc2x0123 = vrshlq_s32(vacc2x0123, vright_post_shift);
+    vacc2x4567 = vrshlq_s32(vacc2x4567, vright_post_shift);
+    vacc3x0123 = vrshlq_s32(vacc3x0123, vright_post_shift);
+    vacc3x4567 = vrshlq_s32(vacc3x4567, vright_post_shift);
+
+    const int16x8_t voutput_zero_point = vld1q_dup_s16(&params->rndnu_neon.output_zero_point);
+#if XNN_ARCH_ARM64
+    const int16x8_t vacc0x01234567 = vqaddq_s16(vqmovn_high_s32(vqmovn_s32(vacc0x0123), vacc0x4567), voutput_zero_point);
+    const int16x8_t vacc1x01234567 = vqaddq_s16(vqmovn_high_s32(vqmovn_s32(vacc1x0123), vacc1x4567), voutput_zero_point);
+    const int16x8_t vacc2x01234567 = vqaddq_s16(vqmovn_high_s32(vqmovn_s32(vacc2x0123), vacc2x4567), voutput_zero_point);
+    const int16x8_t vacc3x01234567 = vqaddq_s16(vqmovn_high_s32(vqmovn_s32(vacc3x0123), vacc3x4567), voutput_zero_point);
+
+    int8x16_t vout0x01234567_1x01234567 = vqmovn_high_s16(vqmovn_s16(vacc0x01234567), vacc1x01234567);
+    int8x16_t vout2x01234567_3x01234567 = vqmovn_high_s16(vqmovn_s16(vacc2x01234567), vacc3x01234567);
+#else
+    const int16x8_t vacc0x01234567 = vqaddq_s16(vcombine_s16(vqmovn_s32(vacc0x0123), vqmovn_s32(vacc0x4567)), voutput_zero_point);
+    const int16x8_t vacc1x01234567 = vqaddq_s16(vcombine_s16(vqmovn_s32(vacc1x0123), vqmovn_s32(vacc1x4567)), voutput_zero_point);
+    const int16x8_t vacc2x01234567 = vqaddq_s16(vcombine_s16(vqmovn_s32(vacc2x0123), vqmovn_s32(vacc2x4567)), voutput_zero_point);
+    const int16x8_t vacc3x01234567 = vqaddq_s16(vcombine_s16(vqmovn_s32(vacc3x0123), vqmovn_s32(vacc3x4567)), voutput_zero_point);
+
+    int8x16_t vout0x01234567_1x01234567 = vcombine_s8(vqmovn_s16(vacc0x01234567), vqmovn_s16(vacc1x01234567));
+    int8x16_t vout2x01234567_3x01234567 = vcombine_s8(vqmovn_s16(vacc2x01234567), vqmovn_s16(vacc3x01234567));
+#endif
+    const int8x16_t voutput_min = vld1q_dup_s8(&params->rndnu_neon.output_min);
+    const int8x16_t voutput_max = vld1q_dup_s8(&params->rndnu_neon.output_max);
+
+    vout2x01234567_3x01234567 = vmaxq_s8(vout2x01234567_3x01234567, voutput_min);
+    vout0x01234567_1x01234567 = vmaxq_s8(vout0x01234567_1x01234567, voutput_min);
+
+    vout2x01234567_3x01234567 = vminq_s8(vout2x01234567_3x01234567, voutput_max);
+    vout0x01234567_1x01234567 = vminq_s8(vout0x01234567_1x01234567, voutput_max);
+
+    if (nc >= 8) {
+      vst1_s8(c3 + 0, vget_high_s8(vout2x01234567_3x01234567));
+      vst1_s8(c2 + 0, vget_low_s8(vout2x01234567_3x01234567));
+      vst1_s8(c1 + 0, vget_high_s8(vout0x01234567_1x01234567));
+      vst1_s8(c0 + 0, vget_low_s8(vout0x01234567_1x01234567));
+
+      c3 = (int8_t*) ((uintptr_t) c3 + cn_stride);
+      c2 = (int8_t*) ((uintptr_t) c2 + cn_stride);
+      c1 = (int8_t*) ((uintptr_t) c1 + cn_stride);
+      c0 = (int8_t*) ((uintptr_t) c0 + cn_stride);
+
+      a = (const int8_t**restrict) ((uintptr_t) a - ks);
+
+      nc -= 8;
+    } else {
+      if (nc & 4) {
+        vst1q_lane_u32(__builtin_assume_aligned(c3, 1), vreinterpretq_u32_s8(vout2x01234567_3x01234567), 2); c3 += 4;
+        vst1q_lane_u32(__builtin_assume_aligned(c2, 1), vreinterpretq_u32_s8(vout2x01234567_3x01234567), 0); c2 += 4;
+        vst1q_lane_u32(__builtin_assume_aligned(c1, 1), vreinterpretq_u32_s8(vout0x01234567_1x01234567), 2); c1 += 4;
+        vst1q_lane_u32(__builtin_assume_aligned(c0, 1), vreinterpretq_u32_s8(vout0x01234567_1x01234567), 0); c0 += 4;
+        vout2x01234567_3x01234567 = vextq_s8(vout2x01234567_3x01234567, vout2x01234567_3x01234567, 4);
+        vout0x01234567_1x01234567 = vextq_s8(vout0x01234567_1x01234567, vout0x01234567_1x01234567, 4);
+      }
+      if (nc & 2) {
+        vst1q_lane_u16(__builtin_assume_aligned(c3, 1), vreinterpretq_u16_s8(vout2x01234567_3x01234567), 4); c3 += 2;
+        vst1q_lane_u16(__builtin_assume_aligned(c2, 1), vreinterpretq_u16_s8(vout2x01234567_3x01234567), 0); c2 += 2;
+        vst1q_lane_u16(__builtin_assume_aligned(c1, 1), vreinterpretq_u16_s8(vout0x01234567_1x01234567), 4); c1 += 2;
+        vst1q_lane_u16(__builtin_assume_aligned(c0, 1), vreinterpretq_u16_s8(vout0x01234567_1x01234567), 0); c0 += 2;
+        vout2x01234567_3x01234567 = vextq_s8(vout2x01234567_3x01234567, vout2x01234567_3x01234567, 2);
+        vout0x01234567_1x01234567 = vextq_s8(vout0x01234567_1x01234567, vout0x01234567_1x01234567, 2);
+      }
+      if (nc & 1) {
+        vst1q_lane_s8(c3, vout2x01234567_3x01234567, 8);
+        vst1q_lane_s8(c2, vout2x01234567_3x01234567, 0);
+        vst1q_lane_s8(c1, vout0x01234567_1x01234567, 8);
+        vst1q_lane_s8(c0, vout0x01234567_1x01234567, 0);
+      }
+
+      nc = 0;
+    }
+  } while (nc != 0);
+}
diff --git a/src/qs8-igemm/gen/4x8c2s4-minmax-rndnu-neon-mull-padal.c b/src/qs8-igemm/gen/4x8c2s4-minmax-rndnu-neon-mull-padal.c
new file mode 100644
index 0000000..6e474ea
--- /dev/null
+++ b/src/qs8-igemm/gen/4x8c2s4-minmax-rndnu-neon-mull-padal.c
@@ -0,0 +1,379 @@
+// Auto-generated file. Do not edit!
+//   Template: src/qs8-igemm/c2-neon-mull-padal-shuffle.c.in
+//   Generator: tools/xngen
+//
+// Copyright 2021 Google LLC
+//
+// This source code is licensed under the BSD-style license found in the
+// LICENSE file in the root directory of this source tree.
+
+#include <assert.h>
+
+#include <arm_neon.h>
+
+#include <xnnpack/gemm.h>
+#include <xnnpack/math.h>
+
+
+void xnn_qs8_igemm_minmax_rndnu_ukernel_4x8c2s4__neon_mull_padal(
+    size_t mr,
+    size_t nc,
+    size_t kc,
+    size_t ks,
+    const int8_t** restrict a,
+    const void* restrict w,
+    int8_t* restrict c,
+    size_t cm_stride,
+    size_t cn_stride,
+    size_t a_offset,
+    const int8_t* zero,
+    const union xnn_qs8_conv_minmax_params params[restrict XNN_MIN_ELEMENTS(1)]) XNN_DISABLE_TSAN XNN_DISABLE_MSAN
+{
+  assert(mr != 0);
+  assert(mr <= 4);
+  assert(nc != 0);
+  assert(kc != 0);
+  assert(ks != 0);
+  assert(ks % (4 * sizeof(void*)) == 0);
+  assert(a_offset % sizeof(int8_t) == 0);
+  assert(a != NULL);
+  assert(w != NULL);
+  assert(c != NULL);
+
+  int8_t* c0 = c;
+  int8_t* c1 = (int8_t*) ((uintptr_t) c0 + cm_stride);
+  if XNN_UNPREDICTABLE(mr < 2) {
+    c1 = c0;
+  }
+  int8_t* c2 = (int8_t*) ((uintptr_t) c1 + cm_stride);
+  if XNN_UNPREDICTABLE(mr <= 2) {
+    c2 = c1;
+  }
+  int8_t* c3 = (int8_t*) ((uintptr_t) c2 + cm_stride);
+  if XNN_UNPREDICTABLE(mr != 4) {
+    c3 = c2;
+  }
+
+  do {
+    int32x4_t vacc0x0123 = vld1q_s32(w); w = (const void*) ((uintptr_t) w + 4 * sizeof(int32_t));
+    int32x4_t vacc0x4567 = vld1q_s32(w); w = (const void*) ((uintptr_t) w + 4 * sizeof(int32_t));
+    int32x4_t vacc1x0123 = vacc0x0123;
+    int32x4_t vacc1x4567 = vacc0x4567;
+    int32x4_t vacc2x0123 = vacc0x0123;
+    int32x4_t vacc2x4567 = vacc0x4567;
+    int32x4_t vacc3x0123 = vacc0x0123;
+    int32x4_t vacc3x4567 = vacc0x4567;
+
+    size_t p = ks;
+    do {
+      const int8_t* restrict a0 = a[0];
+      if XNN_UNPREDICTABLE(a0 != zero) {
+        a0 = (const int8_t*) ((uintptr_t) a0 + a_offset);
+      }
+      const int8_t* restrict a1 = a[1];
+      if XNN_UNPREDICTABLE(a1 != zero) {
+        a1 = (const int8_t*) ((uintptr_t) a1 + a_offset);
+      }
+      const int8_t* restrict a2 = a[2];
+      if XNN_UNPREDICTABLE(a2 != zero) {
+        a2 = (const int8_t*) ((uintptr_t) a2 + a_offset);
+      }
+      const int8_t* restrict a3 = a[3];
+      if XNN_UNPREDICTABLE(a3 != zero) {
+        a3 = (const int8_t*) ((uintptr_t) a3 + a_offset);
+      }
+      a += 4;
+
+      size_t k = kc;
+
+
+      while (k >= 8 * sizeof(int8_t)) {
+        int8x8_t va0x0 = vld1_s8(a0); a0 += 8;
+        int8x8_t va1x0 = vld1_s8(a1); a1 += 8;
+        int8x8_t va2x0 = vld1_s8(a2); a2 += 8;
+        int8x8_t va3x0 = vld1_s8(a3); a3 += 8;
+
+        const int8x8_t vb0123c0x0 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+        const int8x8_t vb4567c0x0 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+        const int8x8_t vb0123c1x0 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+        const int8x8_t vb4567c1x0 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+        const int8x8_t vb0123c2x0 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+        const int8x8_t vb4567c2x0 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+        const int8x8_t vb0123c3x0 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+        const int8x8_t vb4567c3x0 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+
+        int16x8_t vprod0x0123c0 = vmull_s8(vb0123c0x0, va0x0);
+        int16x8_t vprod1x0123c0 = vmull_s8(vb0123c0x0, va1x0);
+        int16x8_t vprod2x0123c0 = vmull_s8(vb0123c0x0, va2x0);
+        int16x8_t vprod3x0123c0 = vmull_s8(vb0123c0x0, va3x0);
+        vacc0x0123 = vpadalq_s16(vacc0x0123, vprod0x0123c0);
+        vacc1x0123 = vpadalq_s16(vacc1x0123, vprod1x0123c0);
+        vacc2x0123 = vpadalq_s16(vacc2x0123, vprod2x0123c0);
+        vacc3x0123 = vpadalq_s16(vacc3x0123, vprod3x0123c0);
+        int16x8_t vprod0x4567c0 = vmull_s8(vb4567c0x0, va0x0);
+        int16x8_t vprod1x4567c0 = vmull_s8(vb4567c0x0, va1x0);
+        int16x8_t vprod2x4567c0 = vmull_s8(vb4567c0x0, va2x0);
+        int16x8_t vprod3x4567c0 = vmull_s8(vb4567c0x0, va3x0);
+        vacc0x4567 = vpadalq_s16(vacc0x4567, vprod0x4567c0);
+        vacc1x4567 = vpadalq_s16(vacc1x4567, vprod1x4567c0);
+        vacc2x4567 = vpadalq_s16(vacc2x4567, vprod2x4567c0);
+        vacc3x4567 = vpadalq_s16(vacc3x4567, vprod3x4567c0);
+        va0x0 = vext_s8(va0x0, va0x0, 2);
+        va1x0 = vext_s8(va1x0, va1x0, 2);
+        va2x0 = vext_s8(va2x0, va2x0, 2);
+        va3x0 = vext_s8(va3x0, va3x0, 2);
+        int16x8_t vprod0x0123c1 = vmull_s8(vb0123c1x0, va0x0);
+        int16x8_t vprod1x0123c1 = vmull_s8(vb0123c1x0, va1x0);
+        int16x8_t vprod2x0123c1 = vmull_s8(vb0123c1x0, va2x0);
+        int16x8_t vprod3x0123c1 = vmull_s8(vb0123c1x0, va3x0);
+        vacc0x0123 = vpadalq_s16(vacc0x0123, vprod0x0123c1);
+        vacc1x0123 = vpadalq_s16(vacc1x0123, vprod1x0123c1);
+        vacc2x0123 = vpadalq_s16(vacc2x0123, vprod2x0123c1);
+        vacc3x0123 = vpadalq_s16(vacc3x0123, vprod3x0123c1);
+        int16x8_t vprod0x4567c1 = vmull_s8(vb4567c1x0, va0x0);
+        int16x8_t vprod1x4567c1 = vmull_s8(vb4567c1x0, va1x0);
+        int16x8_t vprod2x4567c1 = vmull_s8(vb4567c1x0, va2x0);
+        int16x8_t vprod3x4567c1 = vmull_s8(vb4567c1x0, va3x0);
+        vacc0x4567 = vpadalq_s16(vacc0x4567, vprod0x4567c1);
+        vacc1x4567 = vpadalq_s16(vacc1x4567, vprod1x4567c1);
+        vacc2x4567 = vpadalq_s16(vacc2x4567, vprod2x4567c1);
+        vacc3x4567 = vpadalq_s16(vacc3x4567, vprod3x4567c1);
+        va0x0 = vext_s8(va0x0, va0x0, 2);
+        va1x0 = vext_s8(va1x0, va1x0, 2);
+        va2x0 = vext_s8(va2x0, va2x0, 2);
+        va3x0 = vext_s8(va3x0, va3x0, 2);
+        int16x8_t vprod0x0123c2 = vmull_s8(vb0123c2x0, va0x0);
+        int16x8_t vprod1x0123c2 = vmull_s8(vb0123c2x0, va1x0);
+        int16x8_t vprod2x0123c2 = vmull_s8(vb0123c2x0, va2x0);
+        int16x8_t vprod3x0123c2 = vmull_s8(vb0123c2x0, va3x0);
+        vacc0x0123 = vpadalq_s16(vacc0x0123, vprod0x0123c2);
+        vacc1x0123 = vpadalq_s16(vacc1x0123, vprod1x0123c2);
+        vacc2x0123 = vpadalq_s16(vacc2x0123, vprod2x0123c2);
+        vacc3x0123 = vpadalq_s16(vacc3x0123, vprod3x0123c2);
+        int16x8_t vprod0x4567c2 = vmull_s8(vb4567c2x0, va0x0);
+        int16x8_t vprod1x4567c2 = vmull_s8(vb4567c2x0, va1x0);
+        int16x8_t vprod2x4567c2 = vmull_s8(vb4567c2x0, va2x0);
+        int16x8_t vprod3x4567c2 = vmull_s8(vb4567c2x0, va3x0);
+        vacc0x4567 = vpadalq_s16(vacc0x4567, vprod0x4567c2);
+        vacc1x4567 = vpadalq_s16(vacc1x4567, vprod1x4567c2);
+        vacc2x4567 = vpadalq_s16(vacc2x4567, vprod2x4567c2);
+        vacc3x4567 = vpadalq_s16(vacc3x4567, vprod3x4567c2);
+        va0x0 = vext_s8(va0x0, va0x0, 2);
+        va1x0 = vext_s8(va1x0, va1x0, 2);
+        va2x0 = vext_s8(va2x0, va2x0, 2);
+        va3x0 = vext_s8(va3x0, va3x0, 2);
+        int16x8_t vprod0x0123c3 = vmull_s8(vb0123c3x0, va0x0);
+        int16x8_t vprod1x0123c3 = vmull_s8(vb0123c3x0, va1x0);
+        int16x8_t vprod2x0123c3 = vmull_s8(vb0123c3x0, va2x0);
+        int16x8_t vprod3x0123c3 = vmull_s8(vb0123c3x0, va3x0);
+        vacc0x0123 = vpadalq_s16(vacc0x0123, vprod0x0123c3);
+        vacc1x0123 = vpadalq_s16(vacc1x0123, vprod1x0123c3);
+        vacc2x0123 = vpadalq_s16(vacc2x0123, vprod2x0123c3);
+        vacc3x0123 = vpadalq_s16(vacc3x0123, vprod3x0123c3);
+        int16x8_t vprod0x4567c3 = vmull_s8(vb4567c3x0, va0x0);
+        int16x8_t vprod1x4567c3 = vmull_s8(vb4567c3x0, va1x0);
+        int16x8_t vprod2x4567c3 = vmull_s8(vb4567c3x0, va2x0);
+        int16x8_t vprod3x4567c3 = vmull_s8(vb4567c3x0, va3x0);
+        vacc0x4567 = vpadalq_s16(vacc0x4567, vprod0x4567c3);
+        vacc1x4567 = vpadalq_s16(vacc1x4567, vprod1x4567c3);
+        vacc2x4567 = vpadalq_s16(vacc2x4567, vprod2x4567c3);
+        vacc3x4567 = vpadalq_s16(vacc3x4567, vprod3x4567c3);
+
+        k -= 8 * sizeof(int8_t);
+      }
+
+      if XNN_UNLIKELY(k != 0) {
+        const int8x8_t va0 = vld1_s8(a0); a0 = (const int8_t*) ((uintptr_t) a0 + k);
+        const int8x8_t va1 = vld1_s8(a1); a1 = (const int8_t*) ((uintptr_t) a1 + k);
+        const int8x8_t va2 = vld1_s8(a2); a2 = (const int8_t*) ((uintptr_t) a2 + k);
+        const int8x8_t va3 = vld1_s8(a3); a3 = (const int8_t*) ((uintptr_t) a3 + k);
+
+        const int8x8_t vb0123c0 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+        const int8x8_t vb4567c0 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+
+        const int16x8_t vprod0x0123c0 = vmull_s8(vb0123c0, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va0), 0)));
+        vacc0x0123 = vpadalq_s16(vacc0x0123, vprod0x0123c0);
+        const int16x8_t vprod0x4567c0 = vmull_s8(vb4567c0, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va0), 0)));
+        vacc0x4567 = vpadalq_s16(vacc0x4567, vprod0x4567c0);
+        const int16x8_t vprod1x0123c0 = vmull_s8(vb0123c0, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va1), 0)));
+        vacc1x0123 = vpadalq_s16(vacc1x0123, vprod1x0123c0);
+        const int16x8_t vprod1x4567c0 = vmull_s8(vb4567c0, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va1), 0)));
+        vacc1x4567 = vpadalq_s16(vacc1x4567, vprod1x4567c0);
+        const int16x8_t vprod2x0123c0 = vmull_s8(vb0123c0, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va2), 0)));
+        vacc2x0123 = vpadalq_s16(vacc2x0123, vprod2x0123c0);
+        const int16x8_t vprod2x4567c0 = vmull_s8(vb4567c0, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va2), 0)));
+        vacc2x4567 = vpadalq_s16(vacc2x4567, vprod2x4567c0);
+        const int16x8_t vprod3x0123c0 = vmull_s8(vb0123c0, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va3), 0)));
+        vacc3x0123 = vpadalq_s16(vacc3x0123, vprod3x0123c0);
+        const int16x8_t vprod3x4567c0 = vmull_s8(vb4567c0, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va3), 0)));
+        vacc3x4567 = vpadalq_s16(vacc3x4567, vprod3x4567c0);
+
+        if (k > 2 * sizeof(int8_t)) {
+          const int8x8_t vb0123c1 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+          const int8x8_t vb4567c1 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+
+          const int16x8_t vprod0x0123c1 = vmull_s8(vb0123c1, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va0), 1)));
+          vacc0x0123 = vpadalq_s16(vacc0x0123, vprod0x0123c1);
+          const int16x8_t vprod0x4567c1 = vmull_s8(vb4567c1, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va0), 1)));
+          vacc0x4567 = vpadalq_s16(vacc0x4567, vprod0x4567c1);
+          const int16x8_t vprod1x0123c1 = vmull_s8(vb0123c1, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va1), 1)));
+          vacc1x0123 = vpadalq_s16(vacc1x0123, vprod1x0123c1);
+          const int16x8_t vprod1x4567c1 = vmull_s8(vb4567c1, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va1), 1)));
+          vacc1x4567 = vpadalq_s16(vacc1x4567, vprod1x4567c1);
+          const int16x8_t vprod2x0123c1 = vmull_s8(vb0123c1, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va2), 1)));
+          vacc2x0123 = vpadalq_s16(vacc2x0123, vprod2x0123c1);
+          const int16x8_t vprod2x4567c1 = vmull_s8(vb4567c1, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va2), 1)));
+          vacc2x4567 = vpadalq_s16(vacc2x4567, vprod2x4567c1);
+          const int16x8_t vprod3x0123c1 = vmull_s8(vb0123c1, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va3), 1)));
+          vacc3x0123 = vpadalq_s16(vacc3x0123, vprod3x0123c1);
+          const int16x8_t vprod3x4567c1 = vmull_s8(vb4567c1, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va3), 1)));
+          vacc3x4567 = vpadalq_s16(vacc3x4567, vprod3x4567c1);
+
+          if (k > 4 * sizeof(int8_t)) {
+            const int8x8_t vb0123c2 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+            const int8x8_t vb4567c2 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+
+            const int16x8_t vprod0x0123c2 = vmull_s8(vb0123c2, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va0), 2)));
+            vacc0x0123 = vpadalq_s16(vacc0x0123, vprod0x0123c2);
+            const int16x8_t vprod0x4567c2 = vmull_s8(vb4567c2, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va0), 2)));
+            vacc0x4567 = vpadalq_s16(vacc0x4567, vprod0x4567c2);
+            const int16x8_t vprod1x0123c2 = vmull_s8(vb0123c2, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va1), 2)));
+            vacc1x0123 = vpadalq_s16(vacc1x0123, vprod1x0123c2);
+            const int16x8_t vprod1x4567c2 = vmull_s8(vb4567c2, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va1), 2)));
+            vacc1x4567 = vpadalq_s16(vacc1x4567, vprod1x4567c2);
+            const int16x8_t vprod2x0123c2 = vmull_s8(vb0123c2, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va2), 2)));
+            vacc2x0123 = vpadalq_s16(vacc2x0123, vprod2x0123c2);
+            const int16x8_t vprod2x4567c2 = vmull_s8(vb4567c2, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va2), 2)));
+            vacc2x4567 = vpadalq_s16(vacc2x4567, vprod2x4567c2);
+            const int16x8_t vprod3x0123c2 = vmull_s8(vb0123c2, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va3), 2)));
+            vacc3x0123 = vpadalq_s16(vacc3x0123, vprod3x0123c2);
+            const int16x8_t vprod3x4567c2 = vmull_s8(vb4567c2, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va3), 2)));
+            vacc3x4567 = vpadalq_s16(vacc3x4567, vprod3x4567c2);
+
+            if (k > 6 * sizeof(int8_t)) {
+              const int8x8_t vb0123c2 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+              const int8x8_t vb4567c2 = vld1_s8(w); w = (const void*) ((uintptr_t) w + 8 * sizeof(int8_t));
+
+              const int16x8_t vprod0x0123c2 = vmull_s8(vb0123c2, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va0), 3)));
+              vacc0x0123 = vpadalq_s16(vacc0x0123, vprod0x0123c2);
+              const int16x8_t vprod0x4567c2 = vmull_s8(vb4567c2, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va0), 3)));
+              vacc0x4567 = vpadalq_s16(vacc0x4567, vprod0x4567c2);
+              const int16x8_t vprod1x0123c2 = vmull_s8(vb0123c2, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va1), 3)));
+              vacc1x0123 = vpadalq_s16(vacc1x0123, vprod1x0123c2);
+              const int16x8_t vprod1x4567c2 = vmull_s8(vb4567c2, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va1), 3)));
+              vacc1x4567 = vpadalq_s16(vacc1x4567, vprod1x4567c2);
+              const int16x8_t vprod2x0123c2 = vmull_s8(vb0123c2, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va2), 3)));
+              vacc2x0123 = vpadalq_s16(vacc2x0123, vprod2x0123c2);
+              const int16x8_t vprod2x4567c2 = vmull_s8(vb4567c2, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va2), 3)));
+              vacc2x4567 = vpadalq_s16(vacc2x4567, vprod2x4567c2);
+              const int16x8_t vprod3x0123c2 = vmull_s8(vb0123c2, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va3), 3)));
+              vacc3x0123 = vpadalq_s16(vacc3x0123, vprod3x0123c2);
+              const int16x8_t vprod3x4567c2 = vmull_s8(vb4567c2, vreinterpret_s8_s16(vdup_lane_s16(vreinterpret_s16_s8(va3), 3)));
+              vacc3x4567 = vpadalq_s16(vacc3x4567, vprod3x4567c2);
+            }
+          }
+        }
+      }
+      p -= 4 * sizeof(void*);
+    } while (p != 0);
+
+    const int32x4_t vright_pre_shift = vld1q_dup_s32(&params->rndnu_neon.right_pre_shift);
+    const int32x4_t vmultiplier = vld1q_dup_s32(&params->rndnu_neon.multiplier);
+    const int32x4_t vright_post_shift = vld1q_dup_s32(&params->rndnu_neon.right_post_shift);
+
+    vacc0x0123 = vshlq_s32(vacc0x0123, vright_pre_shift);
+    vacc0x4567 = vshlq_s32(vacc0x4567, vright_pre_shift);
+    vacc1x0123 = vshlq_s32(vacc1x0123, vright_pre_shift);
+    vacc1x4567 = vshlq_s32(vacc1x4567, vright_pre_shift);
+    vacc2x0123 = vshlq_s32(vacc2x0123, vright_pre_shift);
+    vacc2x4567 = vshlq_s32(vacc2x4567, vright_pre_shift);
+    vacc3x0123 = vshlq_s32(vacc3x0123, vright_pre_shift);
+    vacc3x4567 = vshlq_s32(vacc3x4567, vright_pre_shift);
+
+    vacc0x0123 = vqdmulhq_s32(vacc0x0123, vmultiplier);
+    vacc0x4567 = vqdmulhq_s32(vacc0x4567, vmultiplier);
+    vacc1x0123 = vqdmulhq_s32(vacc1x0123, vmultiplier);
+    vacc1x4567 = vqdmulhq_s32(vacc1x4567, vmultiplier);
+    vacc2x0123 = vqdmulhq_s32(vacc2x0123, vmultiplier);
+    vacc2x4567 = vqdmulhq_s32(vacc2x4567, vmultiplier);
+    vacc3x0123 = vqdmulhq_s32(vacc3x0123, vmultiplier);
+    vacc3x4567 = vqdmulhq_s32(vacc3x4567, vmultiplier);
+
+    vacc0x0123 = vrshlq_s32(vacc0x0123, vright_post_shift);
+    vacc0x4567 = vrshlq_s32(vacc0x4567, vright_post_shift);
+    vacc1x0123 = vrshlq_s32(vacc1x0123, vright_post_shift);
+    vacc1x4567 = vrshlq_s32(vacc1x4567, vright_post_shift);
+    vacc2x0123 = vrshlq_s32(vacc2x0123, vright_post_shift);
+    vacc2x4567 = vrshlq_s32(vacc2x4567, vright_post_shift);
+    vacc3x0123 = vrshlq_s32(vacc3x0123, vright_post_shift);
+    vacc3x4567 = vrshlq_s32(vacc3x4567, vright_post_shift);
+
+    const int16x8_t voutput_zero_point = vld1q_dup_s16(&params->rndnu_neon.output_zero_point);
+#if XNN_ARCH_ARM64
+    const int16x8_t vacc0x01234567 = vqaddq_s16(vqmovn_high_s32(vqmovn_s32(vacc0x0123), vacc0x4567), voutput_zero_point);
+    const int16x8_t vacc1x01234567 = vqaddq_s16(vqmovn_high_s32(vqmovn_s32(vacc1x0123), vacc1x4567), voutput_zero_point);
+    const int16x8_t vacc2x01234567 = vqaddq_s16(vqmovn_high_s32(vqmovn_s32(vacc2x0123), vacc2x4567), voutput_zero_point);
+    const int16x8_t vacc3x01234567 = vqaddq_s16(vqmovn_high_s32(vqmovn_s32(vacc3x0123), vacc3x4567), voutput_zero_point);
+
+    int8x16_t vout0x01234567_1x01234567 = vqmovn_high_s16(vqmovn_s16(vacc0x01234567), vacc1x01234567);
+    int8x16_t vout2x01234567_3x01234567 = vqmovn_high_s16(vqmovn_s16(vacc2x01234567), vacc3x01234567);
+#else
+    const int16x8_t vacc0x01234567 = vqaddq_s16(vcombine_s16(vqmovn_s32(vacc0x0123), vqmovn_s32(vacc0x4567)), voutput_zero_point);
+    const int16x8_t vacc1x01234567 = vqaddq_s16(vcombine_s16(vqmovn_s32(vacc1x0123), vqmovn_s32(vacc1x4567)), voutput_zero_point);
+    const int16x8_t vacc2x01234567 = vqaddq_s16(vcombine_s16(vqmovn_s32(vacc2x0123), vqmovn_s32(vacc2x4567)), voutput_zero_point);
+    const int16x8_t vacc3x01234567 = vqaddq_s16(vcombine_s16(vqmovn_s32(vacc3x0123), vqmovn_s32(vacc3x4567)), voutput_zero_point);
+
+    int8x16_t vout0x01234567_1x01234567 = vcombine_s8(vqmovn_s16(vacc0x01234567), vqmovn_s16(vacc1x01234567));
+    int8x16_t vout2x01234567_3x01234567 = vcombine_s8(vqmovn_s16(vacc2x01234567), vqmovn_s16(vacc3x01234567));
+#endif
+    const int8x16_t voutput_min = vld1q_dup_s8(&params->rndnu_neon.output_min);
+    const int8x16_t voutput_max = vld1q_dup_s8(&params->rndnu_neon.output_max);
+
+    vout2x01234567_3x01234567 = vmaxq_s8(vout2x01234567_3x01234567, voutput_min);
+    vout0x01234567_1x01234567 = vmaxq_s8(vout0x01234567_1x01234567, voutput_min);
+
+    vout2x01234567_3x01234567 = vminq_s8(vout2x01234567_3x01234567, voutput_max);
+    vout0x01234567_1x01234567 = vminq_s8(vout0x01234567_1x01234567, voutput_max);
+
+    if (nc >= 8) {
+      vst1_s8(c3 + 0, vget_high_s8(vout2x01234567_3x01234567));
+      vst1_s8(c2 + 0, vget_low_s8(vout2x01234567_3x01234567));
+      vst1_s8(c1 + 0, vget_high_s8(vout0x01234567_1x01234567));
+      vst1_s8(c0 + 0, vget_low_s8(vout0x01234567_1x01234567));
+
+      c3 = (int8_t*) ((uintptr_t) c3 + cn_stride);
+      c2 = (int8_t*) ((uintptr_t) c2 + cn_stride);
+      c1 = (int8_t*) ((uintptr_t) c1 + cn_stride);
+      c0 = (int8_t*) ((uintptr_t) c0 + cn_stride);
+
+      a = (const int8_t**restrict) ((uintptr_t) a - ks);
+
+      nc -= 8;
+    } else {
+      if (nc & 4) {
+        vst1q_lane_u32(__builtin_assume_aligned(c3, 1), vreinterpretq_u32_s8(vout2x01234567_3x01234567), 2); c3 += 4;
+        vst1q_lane_u32(__builtin_assume_aligned(c2, 1), vreinterpretq_u32_s8(vout2x01234567_3x01234567), 0); c2 += 4;
+        vst1q_lane_u32(__builtin_assume_aligned(c1, 1), vreinterpretq_u32_s8(vout0x01234567_1x01234567), 2); c1 += 4;
+        vst1q_lane_u32(__builtin_assume_aligned(c0, 1), vreinterpretq_u32_s8(vout0x01234567_1x01234567), 0); c0 += 4;
+        vout2x01234567_3x01234567 = vextq_s8(vout2x01234567_3x01234567, vout2x01234567_3x01234567, 4);
+        vout0x01234567_1x01234567 = vextq_s8(vout0x01234567_1x01234567, vout0x01234567_1x01234567, 4);
+      }
+      if (nc & 2) {
+        vst1q_lane_u16(__builtin_assume_aligned(c3, 1), vreinterpretq_u16_s8(vout2x01234567_3x01234567), 4); c3 += 2;
+        vst1q_lane_u16(__builtin_assume_aligned(c2, 1), vreinterpretq_u16_s8(vout2x01234567_3x01234567), 0); c2 += 2;
+        vst1q_lane_u16(__builtin_assume_aligned(c1, 1), vreinterpretq_u16_s8(vout0x01234567_1x01234567), 4); c1 += 2;
+        vst1q_lane_u16(__builtin_assume_aligned(c0, 1), vreinterpretq_u16_s8(vout0x01234567_1x01234567), 0); c0 += 2;
+        vout2x01234567_3x01234567 = vextq_s8(vout2x01234567_3x01234567, vout2x01234567_3x01234567, 2);
+        vout0x01234567_1x01234567 = vextq_s8(vout0x01234567_1x01234567, vout0x01234567_1x01234567, 2);
+      }
+      if (nc & 1) {
+        vst1q_lane_s8(c3, vout2x01234567_3x01234567, 8);
+        vst1q_lane_s8(c2, vout2x01234567_3x01234567, 0);
+        vst1q_lane_s8(c1, vout0x01234567_1x01234567, 8);
+        vst1q_lane_s8(c0, vout0x01234567_1x01234567, 0);
+      }
+
+      nc = 0;
+    }
+  } while (nc != 0);
+}