| // Auto-generated file. Do not edit! |
| // Template: src/x8-lut/neon-tbx128x4.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/lut.h> |
| #include <xnnpack/common.h> |
| |
| |
| void xnn_x8_lut_ukernel__neon_tbx128x4_x48( |
| size_t n, |
| const uint8_t* x, |
| uint8_t* y, |
| const uint8_t t[restrict XNN_MIN_ELEMENTS(256)]) |
| { |
| assert(n != 0); |
| assert(x != NULL); |
| assert(y != NULL); |
| |
| const uint8x16x4_t vtable0123 = vld1q_u8_x4(t); |
| const uint8x16x4_t vtable4567 = vld1q_u8_x4(t + 64); |
| const uint8x16x4_t vtable89AB = vld1q_u8_x4(t + 128); |
| const uint8x16x4_t vtableCDEF = vld1q_u8_x4(t + 192); |
| const uint8x16_t voffset = vmovq_n_u8(64); |
| for (; n >= 48 * sizeof(uint8_t); n -= 48 * sizeof(uint8_t)) { |
| uint8x16_t vx0 = vld1q_u8(x); x += 16; |
| uint8x16_t vx1 = vld1q_u8(x); x += 16; |
| uint8x16_t vx2 = vld1q_u8(x); x += 16; |
| |
| uint8x16_t vy0 = vqtbl4q_u8(vtable0123, vx0); |
| vx0 = vsubq_u8(vx0, voffset); |
| uint8x16_t vy1 = vqtbl4q_u8(vtable0123, vx1); |
| vx1 = vsubq_u8(vx1, voffset); |
| uint8x16_t vy2 = vqtbl4q_u8(vtable0123, vx2); |
| vx2 = vsubq_u8(vx2, voffset); |
| |
| vy0 = vqtbx4q_u8(vy0, vtable4567, vx0); |
| vx0 = vsubq_u8(vx0, voffset); |
| vy1 = vqtbx4q_u8(vy1, vtable4567, vx1); |
| vx1 = vsubq_u8(vx1, voffset); |
| vy2 = vqtbx4q_u8(vy2, vtable4567, vx2); |
| vx2 = vsubq_u8(vx2, voffset); |
| |
| vy0 = vqtbx4q_u8(vy0, vtable89AB, vx0); |
| vx0 = vsubq_u8(vx0, voffset); |
| vy1 = vqtbx4q_u8(vy1, vtable89AB, vx1); |
| vx1 = vsubq_u8(vx1, voffset); |
| vy2 = vqtbx4q_u8(vy2, vtable89AB, vx2); |
| vx2 = vsubq_u8(vx2, voffset); |
| |
| vy0 = vqtbx4q_u8(vy0, vtableCDEF, vx0); |
| vy1 = vqtbx4q_u8(vy1, vtableCDEF, vx1); |
| vy2 = vqtbx4q_u8(vy2, vtableCDEF, vx2); |
| |
| vst1q_u8(y, vy0); y += 16; |
| vst1q_u8(y, vy1); y += 16; |
| vst1q_u8(y, vy2); y += 16; |
| } |
| for (; n >= 16 * sizeof(uint8_t); n -= 16 * sizeof(uint8_t)) { |
| uint8x16_t vx = vld1q_u8(x); x += 16; |
| |
| uint8x16_t vy = vqtbl4q_u8(vtable0123, vx); |
| |
| vx = vsubq_u8(vx, voffset); |
| vy = vqtbx4q_u8(vy, vtable4567, vx); |
| |
| vx = vsubq_u8(vx, voffset); |
| vy = vqtbx4q_u8(vy, vtable89AB, vx); |
| |
| vx = vsubq_u8(vx, voffset); |
| vy = vqtbx4q_u8(vy, vtableCDEF, vx); |
| |
| vst1q_u8(y, vy); y += 16; |
| } |
| if XNN_UNLIKELY(n != 0) { |
| uint8x16_t vx = vld1q_u8(x); |
| |
| uint8x16_t vy = vqtbl4q_u8(vtable0123, vx); |
| |
| vx = vsubq_u8(vx, voffset); |
| vy = vqtbx4q_u8(vy, vtable4567, vx); |
| |
| vx = vsubq_u8(vx, voffset); |
| vy = vqtbx4q_u8(vy, vtable89AB, vx); |
| |
| vx = vsubq_u8(vx, voffset); |
| vy = vqtbx4q_u8(vy, vtableCDEF, vx); |
| |
| uint8x8_t vy_lo = vget_low_u8(vy); |
| if (n & (8 * sizeof(uint8_t))) { |
| vst1_u8(y, vy_lo); y += 8; |
| vy_lo = vget_high_u8(vy); |
| } |
| if (n & (4 * sizeof(uint8_t))) { |
| vst1_lane_u32(__builtin_assume_aligned(y, 1), vreinterpret_u32_u8(vy_lo), 0); y += 4; |
| vy_lo = vext_u8(vy_lo, vy_lo, 4); |
| } |
| if (n & (2 * sizeof(uint8_t))) { |
| vst1_lane_u16(__builtin_assume_aligned(y, 1), vreinterpret_u16_u8(vy_lo), 0); y += 2; |
| vy_lo = vext_u8(vy_lo, vy_lo, 2); |
| } |
| if (n & (1 * sizeof(uint8_t))) { |
| vst1_lane_u8(y, vy_lo, 0); |
| } |
| } |
| } |