| // Auto-generated file. Do not edit! |
| // Template: src/f32-sigmoid/wasmsimd-lut64-p2-div.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/common.h> |
| #include <xnnpack/vunary.h> |
| |
| |
| extern XNN_INTERNAL const float xnn_table_exp2minus_k_over_64[64]; |
| |
| void xnn_f32_sigmoid_ukernel__wasmsimd_lut64_p2_div_x16( |
| size_t n, |
| const float* x, |
| float* y, |
| const void* params) XNN_DISABLE_TSAN |
| { |
| assert(n % sizeof(float) == 0); |
| |
| const v128_t vmagic_bias = wasm_f32x4_splat(0x1.800000p17f); |
| const v128_t vminus_log2e = wasm_f32x4_splat(-0x1.715476p0f); |
| const v128_t vindex_mask = wasm_i32x4_splat(INT32_C(0x3F)); |
| const v128_t vln2_hi = wasm_f32x4_splat(0x1.630000p-1f); |
| const v128_t vln2_lo = wasm_f32x4_splat(-0x1.BD0106p-13f); |
| const v128_t vc2 = wasm_f32x4_splat(0x1.FFFF0Ap-2f); |
| const v128_t vone = wasm_f32x4_splat(1.0f); |
| const v128_t vdenorm_cutoff = wasm_f32x4_splat(0x1.5D589Ep+6f); |
| |
| for (; n >= 16 * sizeof(float); n -= 16 * sizeof(float)) { |
| const v128_t vx0123 = wasm_v128_load(x); |
| const v128_t vx4567 = wasm_v128_load(x + 4); |
| const v128_t vx89AB = wasm_v128_load(x + 8); |
| const v128_t vxCDEF = wasm_v128_load(x + 12); |
| x += 16; |
| |
| const v128_t vz0123 = wasm_f32x4_abs(vx0123); |
| const v128_t vz4567 = wasm_f32x4_abs(vx4567); |
| const v128_t vz89AB = wasm_f32x4_abs(vx89AB); |
| const v128_t vzCDEF = wasm_f32x4_abs(vxCDEF); |
| |
| v128_t vn0123 = wasm_f32x4_add(vmagic_bias, wasm_f32x4_mul(vz0123, vminus_log2e)); |
| v128_t vn4567 = wasm_f32x4_add(vmagic_bias, wasm_f32x4_mul(vz4567, vminus_log2e)); |
| v128_t vn89AB = wasm_f32x4_add(vmagic_bias, wasm_f32x4_mul(vz89AB, vminus_log2e)); |
| v128_t vnCDEF = wasm_f32x4_add(vmagic_bias, wasm_f32x4_mul(vzCDEF, vminus_log2e)); |
| |
| const v128_t ve0123 = wasm_i32x4_shl(vn0123, 17); |
| const v128_t ve4567 = wasm_i32x4_shl(vn4567, 17); |
| const v128_t ve89AB = wasm_i32x4_shl(vn89AB, 17); |
| const v128_t veCDEF = wasm_i32x4_shl(vnCDEF, 17); |
| |
| const v128_t vidx0123 = wasm_i32x4_shl(wasm_v128_and(vn0123, vindex_mask), 2); |
| const v128_t vidx4567 = wasm_i32x4_shl(wasm_v128_and(vn4567, vindex_mask), 2); |
| const v128_t vidx89AB = wasm_i32x4_shl(wasm_v128_and(vn89AB, vindex_mask), 2); |
| const v128_t vidxCDEF = wasm_i32x4_shl(wasm_v128_and(vnCDEF, vindex_mask), 2); |
| |
| const uint64_t vidx01 = wasm_i64x2_extract_lane(vidx0123, 0); |
| const uint64_t vidx23 = wasm_i64x2_extract_lane(vidx0123, 1); |
| const float vl0 = *((const float*) ((uintptr_t) xnn_table_exp2minus_k_over_64 + (uint32_t) vidx01)); |
| const float vl1 = *((const float*) ((uintptr_t) xnn_table_exp2minus_k_over_64 + (uint32_t) (vidx01 >> 32))); |
| const float vl2 = *((const float*) ((uintptr_t) xnn_table_exp2minus_k_over_64 + (uint32_t) vidx23)); |
| const float vl3 = *((const float*) ((uintptr_t) xnn_table_exp2minus_k_over_64 + (uint32_t) (vidx23 >> 32))); |
| const v128_t vl0123 = wasm_f32x4_make(vl0, vl1, vl2, vl3); |
| const uint64_t vidx45 = wasm_i64x2_extract_lane(vidx4567, 0); |
| const uint64_t vidx67 = wasm_i64x2_extract_lane(vidx4567, 1); |
| const float vl4 = *((const float*) ((uintptr_t) xnn_table_exp2minus_k_over_64 + (uint32_t) vidx45)); |
| const float vl5 = *((const float*) ((uintptr_t) xnn_table_exp2minus_k_over_64 + (uint32_t) (vidx45 >> 32))); |
| const float vl6 = *((const float*) ((uintptr_t) xnn_table_exp2minus_k_over_64 + (uint32_t) vidx67)); |
| const float vl7 = *((const float*) ((uintptr_t) xnn_table_exp2minus_k_over_64 + (uint32_t) (vidx67 >> 32))); |
| const v128_t vl4567 = wasm_f32x4_make(vl4, vl5, vl6, vl7); |
| const uint64_t vidx89 = wasm_i64x2_extract_lane(vidx89AB, 0); |
| const uint64_t vidxAB = wasm_i64x2_extract_lane(vidx89AB, 1); |
| const float vl8 = *((const float*) ((uintptr_t) xnn_table_exp2minus_k_over_64 + (uint32_t) vidx89)); |
| const float vl9 = *((const float*) ((uintptr_t) xnn_table_exp2minus_k_over_64 + (uint32_t) (vidx89 >> 32))); |
| const float vlA = *((const float*) ((uintptr_t) xnn_table_exp2minus_k_over_64 + (uint32_t) vidxAB)); |
| const float vlB = *((const float*) ((uintptr_t) xnn_table_exp2minus_k_over_64 + (uint32_t) (vidxAB >> 32))); |
| const v128_t vl89AB = wasm_f32x4_make(vl8, vl9, vlA, vlB); |
| const uint64_t vidxCD = wasm_i64x2_extract_lane(vidxCDEF, 0); |
| const uint64_t vidxEF = wasm_i64x2_extract_lane(vidxCDEF, 1); |
| const float vlC = *((const float*) ((uintptr_t) xnn_table_exp2minus_k_over_64 + (uint32_t) vidxCD)); |
| const float vlD = *((const float*) ((uintptr_t) xnn_table_exp2minus_k_over_64 + (uint32_t) (vidxCD >> 32))); |
| const float vlE = *((const float*) ((uintptr_t) xnn_table_exp2minus_k_over_64 + (uint32_t) vidxEF)); |
| const float vlF = *((const float*) ((uintptr_t) xnn_table_exp2minus_k_over_64 + (uint32_t) (vidxEF >> 32))); |
| const v128_t vlCDEF = wasm_f32x4_make(vlC, vlD, vlE, vlF); |
| |
| const v128_t vs0123 = wasm_i32x4_add(vl0123, ve0123); |
| const v128_t vs4567 = wasm_i32x4_add(vl4567, ve4567); |
| const v128_t vs89AB = wasm_i32x4_add(vl89AB, ve89AB); |
| const v128_t vsCDEF = wasm_i32x4_add(vlCDEF, veCDEF); |
| |
| vn0123 = wasm_f32x4_sub(vn0123, vmagic_bias); |
| vn4567 = wasm_f32x4_sub(vn4567, vmagic_bias); |
| vn89AB = wasm_f32x4_sub(vn89AB, vmagic_bias); |
| vnCDEF = wasm_f32x4_sub(vnCDEF, vmagic_bias); |
| |
| v128_t vt0123 = wasm_f32x4_add(vz0123, wasm_f32x4_mul(vn0123, vln2_hi)); |
| v128_t vt4567 = wasm_f32x4_add(vz4567, wasm_f32x4_mul(vn4567, vln2_hi)); |
| v128_t vt89AB = wasm_f32x4_add(vz89AB, wasm_f32x4_mul(vn89AB, vln2_hi)); |
| v128_t vtCDEF = wasm_f32x4_add(vzCDEF, wasm_f32x4_mul(vnCDEF, vln2_hi)); |
| |
| vt0123 = wasm_f32x4_add(vt0123, wasm_f32x4_mul(vn0123, vln2_lo)); |
| vt4567 = wasm_f32x4_add(vt4567, wasm_f32x4_mul(vn4567, vln2_lo)); |
| vt89AB = wasm_f32x4_add(vt89AB, wasm_f32x4_mul(vn89AB, vln2_lo)); |
| vtCDEF = wasm_f32x4_add(vtCDEF, wasm_f32x4_mul(vnCDEF, vln2_lo)); |
| |
| v128_t vp0123 = wasm_f32x4_mul(vt0123, vc2); |
| v128_t vp4567 = wasm_f32x4_mul(vt4567, vc2); |
| v128_t vp89AB = wasm_f32x4_mul(vt89AB, vc2); |
| v128_t vpCDEF = wasm_f32x4_mul(vtCDEF, vc2); |
| |
| vp0123 = wasm_f32x4_sub(vt0123, wasm_f32x4_mul(vp0123, vt0123)); |
| vp4567 = wasm_f32x4_sub(vt4567, wasm_f32x4_mul(vp4567, vt4567)); |
| vp89AB = wasm_f32x4_sub(vt89AB, wasm_f32x4_mul(vp89AB, vt89AB)); |
| vpCDEF = wasm_f32x4_sub(vtCDEF, wasm_f32x4_mul(vpCDEF, vtCDEF)); |
| |
| const v128_t vy0123 = wasm_f32x4_sub(vs0123, wasm_f32x4_mul(vs0123, vp0123)); |
| const v128_t vy4567 = wasm_f32x4_sub(vs4567, wasm_f32x4_mul(vs4567, vp4567)); |
| const v128_t vy89AB = wasm_f32x4_sub(vs89AB, wasm_f32x4_mul(vs89AB, vp89AB)); |
| const v128_t vyCDEF = wasm_f32x4_sub(vsCDEF, wasm_f32x4_mul(vsCDEF, vpCDEF)); |
| |
| const v128_t vd0123 = wasm_f32x4_add(vy0123, vone); |
| const v128_t vd4567 = wasm_f32x4_add(vy4567, vone); |
| const v128_t vd89AB = wasm_f32x4_add(vy89AB, vone); |
| const v128_t vdCDEF = wasm_f32x4_add(vyCDEF, vone); |
| |
| v128_t vf0123 = wasm_f32x4_div(vy0123, vd0123); |
| v128_t vf4567 = wasm_f32x4_div(vy4567, vd4567); |
| v128_t vf89AB = wasm_f32x4_div(vy89AB, vd89AB); |
| v128_t vfCDEF = wasm_f32x4_div(vyCDEF, vdCDEF); |
| |
| vf0123 = wasm_v128_andnot(vf0123, wasm_f32x4_gt(vz0123, vdenorm_cutoff)); |
| vf4567 = wasm_v128_andnot(vf4567, wasm_f32x4_gt(vz4567, vdenorm_cutoff)); |
| vf89AB = wasm_v128_andnot(vf89AB, wasm_f32x4_gt(vz89AB, vdenorm_cutoff)); |
| vfCDEF = wasm_v128_andnot(vfCDEF, wasm_f32x4_gt(vzCDEF, vdenorm_cutoff)); |
| |
| vf0123 = wasm_v128_bitselect(vf0123, wasm_f32x4_sub(vone, vf0123), wasm_i32x4_shr(vx0123, 31)); |
| vf4567 = wasm_v128_bitselect(vf4567, wasm_f32x4_sub(vone, vf4567), wasm_i32x4_shr(vx4567, 31)); |
| vf89AB = wasm_v128_bitselect(vf89AB, wasm_f32x4_sub(vone, vf89AB), wasm_i32x4_shr(vx89AB, 31)); |
| vfCDEF = wasm_v128_bitselect(vfCDEF, wasm_f32x4_sub(vone, vfCDEF), wasm_i32x4_shr(vxCDEF, 31)); |
| |
| wasm_v128_store(y, vf0123); |
| wasm_v128_store(y + 4, vf4567); |
| wasm_v128_store(y + 8, vf89AB); |
| wasm_v128_store(y + 12, vfCDEF); |
| y += 16; |
| } |
| for (; n >= 4 * sizeof(float); n -= 4 * sizeof(float)) { |
| const v128_t vx = wasm_v128_load(x); |
| x += 4; |
| |
| const v128_t vz = wasm_f32x4_abs(vx); |
| |
| v128_t vn = wasm_f32x4_add(vmagic_bias, wasm_f32x4_mul(vz, vminus_log2e)); |
| const v128_t ve = wasm_i32x4_shl(vn, 17); |
| |
| const v128_t vidx = wasm_i32x4_shl(wasm_v128_and(vn, vindex_mask), 2); |
| 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_64 + (uint32_t) vidx_lo)); |
| const float vl1 = *((const float*) ((uintptr_t) xnn_table_exp2minus_k_over_64 + (uint32_t) (vidx_lo >> 32))); |
| const float vl2 = *((const float*) ((uintptr_t) xnn_table_exp2minus_k_over_64 + (uint32_t) vidx_hi)); |
| const float vl3 = *((const float*) ((uintptr_t) xnn_table_exp2minus_k_over_64 + (uint32_t) (vidx_hi >> 32))); |
| const v128_t vl = wasm_f32x4_make(vl0, vl1, vl2, vl3); |
| |
| const v128_t vs = wasm_i32x4_add(vl, ve); |
| vn = wasm_f32x4_sub(vn, vmagic_bias); |
| |
| v128_t vt = wasm_f32x4_add(vz, wasm_f32x4_mul(vn, vln2_hi)); |
| vt = wasm_f32x4_add(vt, wasm_f32x4_mul(vn, vln2_lo)); |
| |
| v128_t vp = wasm_f32x4_mul(vt, vc2); |
| vp = wasm_f32x4_sub(vt, wasm_f32x4_mul(vp, vt)); |
| |
| const v128_t vy = wasm_f32x4_sub(vs, wasm_f32x4_mul(vs, vp)); |
| const v128_t vd = wasm_f32x4_add(vy, vone); |
| |
| v128_t vf = wasm_f32x4_div(vy, vd); |
| vf = wasm_v128_andnot(vf, wasm_f32x4_gt(vz, vdenorm_cutoff)); |
| vf = wasm_v128_bitselect(vf, wasm_f32x4_sub(vone, vf), wasm_i32x4_shr(vx, 31)); |
| |
| wasm_v128_store(y, vf); |
| y += 4; |
| } |
| if XNN_UNLIKELY(n != 0) { |
| const v128_t vx = wasm_v128_load(x); |
| |
| const v128_t vz = wasm_f32x4_abs(vx); |
| |
| v128_t vn = wasm_f32x4_add(vmagic_bias, wasm_f32x4_mul(vz, vminus_log2e)); |
| const v128_t ve = wasm_i32x4_shl(vn, 17); |
| |
| const v128_t vidx = wasm_i32x4_shl(wasm_v128_and(vn, vindex_mask), 2); |
| 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_64 + (uint32_t) vidx_lo)); |
| const float vl1 = *((const float*) ((uintptr_t) xnn_table_exp2minus_k_over_64 + (uint32_t) (vidx_lo >> 32))); |
| const float vl2 = *((const float*) ((uintptr_t) xnn_table_exp2minus_k_over_64 + (uint32_t) vidx_hi)); |
| const float vl3 = *((const float*) ((uintptr_t) xnn_table_exp2minus_k_over_64 + (uint32_t) (vidx_hi >> 32))); |
| const v128_t vl = wasm_f32x4_make(vl0, vl1, vl2, vl3); |
| |
| const v128_t vs = wasm_i32x4_add(vl, ve); |
| vn = wasm_f32x4_sub(vn, vmagic_bias); |
| |
| v128_t vt = wasm_f32x4_add(vz, wasm_f32x4_mul(vn, vln2_hi)); |
| vt = wasm_f32x4_add(vt, wasm_f32x4_mul(vn, vln2_lo)); |
| |
| v128_t vp = wasm_f32x4_mul(vt, vc2); |
| vp = wasm_f32x4_sub(vt, wasm_f32x4_mul(vp, vt)); |
| |
| const v128_t vy = wasm_f32x4_sub(vs, wasm_f32x4_mul(vs, vp)); |
| const v128_t vd = wasm_f32x4_add(vy, vone); |
| |
| v128_t vf = wasm_f32x4_div(vy, vd); |
| vf = wasm_v128_andnot(vf, wasm_f32x4_gt(vz, vdenorm_cutoff)); |
| vf = wasm_v128_bitselect(vf, wasm_f32x4_sub(vone, vf), wasm_i32x4_shr(vx, 31)); |
| |
| if (n & (2 * sizeof(float))) { |
| *((double*) y) = wasm_f64x2_extract_lane(vf, 0); |
| vf = wasm_v32x4_shuffle(vf, vf, 2, 3, 2, 3); |
| y += 2; |
| } |
| if (n & (1 * sizeof(float))) { |
| *y = wasm_f32x4_extract_lane(vf, 0); |
| } |
| } |
| } |