| // Auto-generated file. Do not edit! |
| // Template: src/f32-velu/wasmsimd-rr2-lut16-p3.c.in |
| // Generator: tools/xngen |
| // |
| // Copyright 2020 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 <wasm_simd128.h> |
| |
| #include <xnnpack/vunary.h> |
| #include <xnnpack/common.h> |
| |
| |
| extern XNN_INTERNAL const float xnn_table_exp2minus_k_over_16[16]; |
| |
| void xnn_f32_velu_ukernel__wasmsimd_arm_rr2_lut16_p3_x4( |
| size_t n, |
| const float* x, |
| float* y, |
| const union xnn_f32_elu_params params[restrict XNN_MIN_ELEMENTS(1)]) XNN_DISABLE_TSAN |
| { |
| assert(n != 0); |
| assert(n % sizeof(float) == 0); |
| assert(x != NULL); |
| assert(y != NULL); |
| |
| const v128_t vprescale = wasm_v32x4_load_splat(¶ms->scalar.prescale); |
| const v128_t valpha = wasm_v32x4_load_splat(¶ms->scalar.alpha); |
| const v128_t vbeta = wasm_v32x4_load_splat(¶ms->scalar.beta); |
| |
| const v128_t vsat_cutoff = wasm_f32x4_splat(-0x1.154246p+4f); |
| const v128_t vmagic_bias = wasm_f32x4_splat(0x1.800000p19f); |
| const v128_t vlog2e = wasm_f32x4_splat(0x1.715476p+0f); |
| const v128_t vindex_mask = wasm_i32x4_splat(0xF); |
| const v128_t vminus_ln2_hi = wasm_f32x4_splat(-0x1.62E400p-1f); |
| const v128_t vminus_ln2_lo = wasm_f32x4_splat(-0x1.7F7D1Cp-20f); |
| const v128_t vc3 = wasm_f32x4_splat(0x1.55561Cp-3f); |
| const v128_t vc2 = wasm_f32x4_splat(0x1.0001ECp-1f); |
| const v128_t vone = wasm_f32x4_splat(1.0f); |
| |
| for (; n >= 4 * sizeof(float); n -= 4 * sizeof(float)) { |
| v128_t vx = wasm_v128_load(x); |
| x += 4; |
| |
| const v128_t vz = wasm_f32x4_max(wasm_f32x4_mul(vx, vprescale), vsat_cutoff); |
| |
| v128_t vn = wasm_f32x4_add(wasm_f32x4_mul(vz, vlog2e), vmagic_bias); |
| const v128_t vidx = wasm_i32x4_shl(wasm_v128_and(vn, vindex_mask), 2); |
| const v128_t ven = wasm_i32x4_shl(vn, 19); |
| |
| const uint64_t vidx_lo = wasm_i64x2_extract_lane(vidx, 0); |
| const uint64_t vidx_hi = wasm_i64x2_extract_lane(vidx, 1); |
| const float vl0 = *((const float*) ((uintptr_t) xnn_table_exp2minus_k_over_16 + (uint32_t) vidx_lo)); |
| const float vl1 = *((const float*) ((uintptr_t) xnn_table_exp2minus_k_over_16 + (uint32_t) (vidx_lo >> 32))); |
| const float vl2 = *((const float*) ((uintptr_t) xnn_table_exp2minus_k_over_16 + (uint32_t) vidx_hi)); |
| const float vl3 = *((const float*) ((uintptr_t) xnn_table_exp2minus_k_over_16 + (uint32_t) (vidx_hi >> 32))); |
| const v128_t vl = wasm_f32x4_make(vl0, vl1, vl2, vl3); |
| |
| v128_t vs = wasm_i32x4_add(vl, ven); |
| vn = wasm_f32x4_sub(vn, vmagic_bias); |
| |
| v128_t vt = wasm_f32x4_add(wasm_f32x4_mul(vn, vminus_ln2_hi), vz); |
| vt = wasm_f32x4_add(wasm_f32x4_mul(vn, vminus_ln2_lo), vt); |
| |
| v128_t vp = wasm_f32x4_add(wasm_f32x4_mul(vc3, vt), vc2); |
| vp = wasm_f32x4_mul(vp, vt); |
| |
| vt = wasm_f32x4_mul(vt, vs); |
| vs = wasm_f32x4_sub(vs, vone); |
| vp = wasm_f32x4_add(wasm_f32x4_mul(vp, vt), vt); |
| const v128_t ve = wasm_f32x4_mul(wasm_f32x4_add(vp, vs), valpha); |
| |
| const v128_t vm = wasm_i32x4_shr(vx, 31); |
| vx = wasm_f32x4_mul(vx, vbeta); |
| const v128_t vy = wasm_v128_bitselect(ve, vx, vm); |
| |
| wasm_v128_store(y, vy); |
| y += 4; |
| } |
| if XNN_UNLIKELY(n != 0) { |
| v128_t vx = wasm_v128_load(x); |
| |
| const v128_t vz = wasm_f32x4_max(wasm_f32x4_mul(vx, vprescale), vsat_cutoff); |
| |
| v128_t vn = wasm_f32x4_add(wasm_f32x4_mul(vz, vlog2e), vmagic_bias); |
| const v128_t vidx = wasm_i32x4_shl(wasm_v128_and(vn, vindex_mask), 2); |
| const v128_t ven = wasm_i32x4_shl(vn, 19); |
| |
| const uint64_t vidx_lo = wasm_i64x2_extract_lane(vidx, 0); |
| const uint64_t vidx_hi = wasm_i64x2_extract_lane(vidx, 1); |
| const float vl0 = *((const float*) ((uintptr_t) xnn_table_exp2minus_k_over_16 + (uint32_t) vidx_lo)); |
| const float vl1 = *((const float*) ((uintptr_t) xnn_table_exp2minus_k_over_16 + (uint32_t) (vidx_lo >> 32))); |
| const float vl2 = *((const float*) ((uintptr_t) xnn_table_exp2minus_k_over_16 + (uint32_t) vidx_hi)); |
| const float vl3 = *((const float*) ((uintptr_t) xnn_table_exp2minus_k_over_16 + (uint32_t) (vidx_hi >> 32))); |
| const v128_t vl = wasm_f32x4_make(vl0, vl1, vl2, vl3); |
| |
| v128_t vs = wasm_i32x4_add(vl, ven); |
| vn = wasm_f32x4_sub(vn, vmagic_bias); |
| |
| v128_t vt = wasm_f32x4_add(wasm_f32x4_mul(vn, vminus_ln2_hi), vz); |
| vt = wasm_f32x4_add(wasm_f32x4_mul(vn, vminus_ln2_lo), vt); |
| |
| v128_t vp = wasm_f32x4_add(wasm_f32x4_mul(vc3, vt), vc2); |
| vp = wasm_f32x4_mul(vp, vt); |
| |
| vt = wasm_f32x4_mul(vt, vs); |
| vs = wasm_f32x4_sub(vs, vone); |
| vp = wasm_f32x4_add(wasm_f32x4_mul(vp, vt), vt); |
| const v128_t ve = wasm_f32x4_mul(wasm_f32x4_add(vp, vs), valpha); |
| |
| const v128_t vm = wasm_i32x4_shr(vx, 31); |
| vx = wasm_f32x4_mul(vx, vbeta); |
| v128_t vy = wasm_v128_bitselect(ve, vx, vm); |
| |
| if (n & (2 * sizeof(float))) { |
| *((double*) y) = wasm_f64x2_extract_lane(vy, 0); |
| vy = wasm_v32x4_shuffle(vy, vy, 2, 3, 2, 3); |
| y += 2; |
| } |
| if (n & (1 * sizeof(float))) { |
| *y = wasm_f32x4_extract_lane(vy, 0); |
| } |
| } |
| } |