1 // Auto-generated file. Do not edit!
2 // Template: src/f32-vsigmoid/wasmsimd-rr2-lut64-p2-div.c.in
3 // Generator: tools/xngen
4 //
5 // Copyright 2020 Google LLC
6 //
7 // This source code is licensed under the BSD-style license found in the
8 // LICENSE file in the root directory of this source tree.
9
10 #include <assert.h>
11
12 #include <wasm_simd128.h>
13
14 #include <xnnpack/common.h>
15 #include <xnnpack/vunary.h>
16
17
18 extern XNN_INTERNAL const float xnn_table_exp2minus_k_over_64[64];
19
xnn_f32_vsigmoid_ukernel__wasmsimd_rr2_lut64_p2_div_x8(size_t n,const float * x,float * y,const union xnn_f32_sigmoid_params params[restrict XNN_MIN_ELEMENTS (1)])20 void xnn_f32_vsigmoid_ukernel__wasmsimd_rr2_lut64_p2_div_x8(
21 size_t n,
22 const float* x,
23 float* y,
24 const union xnn_f32_sigmoid_params params[restrict XNN_MIN_ELEMENTS(1)]) XNN_OOB_READS
25 {
26 assert(n % sizeof(float) == 0);
27
28 const v128_t vmagic_bias = wasm_v128_load64_splat(params->wasmsimd_rr2_lut64_p2.magic_bias);
29 const v128_t vminus_log2e = wasm_v128_load64_splat(params->wasmsimd_rr2_lut64_p2.minus_log2e);
30 const v128_t vindex_mask = wasm_v128_load64_splat(params->wasmsimd_rr2_lut64_p2.index_mask);
31 const v128_t vln2_hi = wasm_v128_load64_splat(params->wasmsimd_rr2_lut64_p2.ln2_hi);
32 const v128_t vln2_lo = wasm_v128_load64_splat(params->wasmsimd_rr2_lut64_p2.ln2_lo);
33 const v128_t vc2 = wasm_v128_load64_splat(params->wasmsimd_rr2_lut64_p2.c2);
34 const v128_t vone = wasm_v128_load64_splat(params->wasmsimd_rr2_lut64_p2.one);
35 const v128_t vdenorm_cutoff = wasm_v128_load64_splat(params->wasmsimd_rr2_lut64_p2.denorm_cutoff);
36
37 for (; n >= 8 * sizeof(float); n -= 8 * sizeof(float)) {
38 const v128_t vx0123 = wasm_v128_load(x);
39 const v128_t vx4567 = wasm_v128_load(x + 4);
40 x += 8;
41
42 const v128_t vz0123 = wasm_f32x4_abs(vx0123);
43 const v128_t vz4567 = wasm_f32x4_abs(vx4567);
44
45 v128_t vn0123 = wasm_f32x4_add(vmagic_bias, wasm_f32x4_mul(vz0123, vminus_log2e));
46 v128_t vn4567 = wasm_f32x4_add(vmagic_bias, wasm_f32x4_mul(vz4567, vminus_log2e));
47
48 const v128_t ve0123 = wasm_i32x4_shl(vn0123, 17);
49 const v128_t ve4567 = wasm_i32x4_shl(vn4567, 17);
50
51 const v128_t vidx0123 = wasm_i32x4_shl(wasm_v128_and(vn0123, vindex_mask), 2);
52 const v128_t vidx4567 = wasm_i32x4_shl(wasm_v128_and(vn4567, vindex_mask), 2);
53
54 const uint64_t vidx01 = wasm_i64x2_extract_lane(vidx0123, 0);
55 const uint64_t vidx23 = wasm_i64x2_extract_lane(vidx0123, 1);
56 const float vl0 = *((const float*) ((uintptr_t) xnn_table_exp2minus_k_over_64 + (uint32_t) vidx01));
57 const float vl1 = *((const float*) ((uintptr_t) xnn_table_exp2minus_k_over_64 + (uint32_t) (vidx01 >> 32)));
58 const float vl2 = *((const float*) ((uintptr_t) xnn_table_exp2minus_k_over_64 + (uint32_t) vidx23));
59 const float vl3 = *((const float*) ((uintptr_t) xnn_table_exp2minus_k_over_64 + (uint32_t) (vidx23 >> 32)));
60 const v128_t vl0123 = wasm_f32x4_make(vl0, vl1, vl2, vl3);
61 const uint64_t vidx45 = wasm_i64x2_extract_lane(vidx4567, 0);
62 const uint64_t vidx67 = wasm_i64x2_extract_lane(vidx4567, 1);
63 const float vl4 = *((const float*) ((uintptr_t) xnn_table_exp2minus_k_over_64 + (uint32_t) vidx45));
64 const float vl5 = *((const float*) ((uintptr_t) xnn_table_exp2minus_k_over_64 + (uint32_t) (vidx45 >> 32)));
65 const float vl6 = *((const float*) ((uintptr_t) xnn_table_exp2minus_k_over_64 + (uint32_t) vidx67));
66 const float vl7 = *((const float*) ((uintptr_t) xnn_table_exp2minus_k_over_64 + (uint32_t) (vidx67 >> 32)));
67 const v128_t vl4567 = wasm_f32x4_make(vl4, vl5, vl6, vl7);
68
69 const v128_t vs0123 = wasm_i32x4_add(vl0123, ve0123);
70 const v128_t vs4567 = wasm_i32x4_add(vl4567, ve4567);
71
72 vn0123 = wasm_f32x4_sub(vn0123, vmagic_bias);
73 vn4567 = wasm_f32x4_sub(vn4567, vmagic_bias);
74
75 v128_t vt0123 = wasm_f32x4_add(vz0123, wasm_f32x4_mul(vn0123, vln2_hi));
76 v128_t vt4567 = wasm_f32x4_add(vz4567, wasm_f32x4_mul(vn4567, vln2_hi));
77
78 vt0123 = wasm_f32x4_add(vt0123, wasm_f32x4_mul(vn0123, vln2_lo));
79 vt4567 = wasm_f32x4_add(vt4567, wasm_f32x4_mul(vn4567, vln2_lo));
80
81 v128_t vp0123 = wasm_f32x4_mul(vt0123, vc2);
82 v128_t vp4567 = wasm_f32x4_mul(vt4567, vc2);
83
84 vp0123 = wasm_f32x4_sub(vt0123, wasm_f32x4_mul(vp0123, vt0123));
85 vp4567 = wasm_f32x4_sub(vt4567, wasm_f32x4_mul(vp4567, vt4567));
86
87 const v128_t vy0123 = wasm_f32x4_sub(vs0123, wasm_f32x4_mul(vs0123, vp0123));
88 const v128_t vy4567 = wasm_f32x4_sub(vs4567, wasm_f32x4_mul(vs4567, vp4567));
89
90 const v128_t vd0123 = wasm_f32x4_add(vy0123, vone);
91 const v128_t vd4567 = wasm_f32x4_add(vy4567, vone);
92
93 v128_t vf0123 = wasm_f32x4_div(vy0123, vd0123);
94 v128_t vf4567 = wasm_f32x4_div(vy4567, vd4567);
95
96 vf0123 = wasm_v128_andnot(vf0123, wasm_f32x4_gt(vz0123, vdenorm_cutoff));
97 vf4567 = wasm_v128_andnot(vf4567, wasm_f32x4_gt(vz4567, vdenorm_cutoff));
98
99 vf0123 = wasm_v128_bitselect(vf0123, wasm_f32x4_sub(vone, vf0123), wasm_i32x4_shr(vx0123, 31));
100 vf4567 = wasm_v128_bitselect(vf4567, wasm_f32x4_sub(vone, vf4567), wasm_i32x4_shr(vx4567, 31));
101
102 wasm_v128_store(y, vf0123);
103 wasm_v128_store(y + 4, vf4567);
104 y += 8;
105 }
106 for (; n >= 4 * sizeof(float); n -= 4 * sizeof(float)) {
107 const v128_t vx = wasm_v128_load(x);
108 x += 4;
109
110 const v128_t vz = wasm_f32x4_abs(vx);
111
112 v128_t vn = wasm_f32x4_add(vmagic_bias, wasm_f32x4_mul(vz, vminus_log2e));
113 const v128_t ve = wasm_i32x4_shl(vn, 17);
114
115 const v128_t vidx = wasm_i32x4_shl(wasm_v128_and(vn, vindex_mask), 2);
116 const uint64_t vidx_lo = wasm_i64x2_extract_lane(vidx, 0);
117 const uint64_t vidx_hi = wasm_i64x2_extract_lane(vidx, 1);
118 const float vl0 = *((const float*) ((uintptr_t) xnn_table_exp2minus_k_over_64 + (uint32_t) vidx_lo));
119 const float vl1 = *((const float*) ((uintptr_t) xnn_table_exp2minus_k_over_64 + (uint32_t) (vidx_lo >> 32)));
120 const float vl2 = *((const float*) ((uintptr_t) xnn_table_exp2minus_k_over_64 + (uint32_t) vidx_hi));
121 const float vl3 = *((const float*) ((uintptr_t) xnn_table_exp2minus_k_over_64 + (uint32_t) (vidx_hi >> 32)));
122 const v128_t vl = wasm_f32x4_make(vl0, vl1, vl2, vl3);
123
124 const v128_t vs = wasm_i32x4_add(vl, ve);
125 vn = wasm_f32x4_sub(vn, vmagic_bias);
126
127 v128_t vt = wasm_f32x4_add(vz, wasm_f32x4_mul(vn, vln2_hi));
128 vt = wasm_f32x4_add(vt, wasm_f32x4_mul(vn, vln2_lo));
129
130 v128_t vp = wasm_f32x4_mul(vt, vc2);
131 vp = wasm_f32x4_sub(vt, wasm_f32x4_mul(vp, vt));
132
133 const v128_t vy = wasm_f32x4_sub(vs, wasm_f32x4_mul(vs, vp));
134 const v128_t vd = wasm_f32x4_add(vy, vone);
135
136 v128_t vf = wasm_f32x4_div(vy, vd);
137 vf = wasm_v128_andnot(vf, wasm_f32x4_gt(vz, vdenorm_cutoff));
138 vf = wasm_v128_bitselect(vf, wasm_f32x4_sub(vone, vf), wasm_i32x4_shr(vx, 31));
139
140 wasm_v128_store(y, vf);
141 y += 4;
142 }
143 if XNN_UNLIKELY(n != 0) {
144 const v128_t vx = wasm_v128_load(x);
145
146 const v128_t vz = wasm_f32x4_abs(vx);
147
148 v128_t vn = wasm_f32x4_add(vmagic_bias, wasm_f32x4_mul(vz, vminus_log2e));
149 const v128_t ve = wasm_i32x4_shl(vn, 17);
150
151 const v128_t vidx = wasm_i32x4_shl(wasm_v128_and(vn, vindex_mask), 2);
152 const uint64_t vidx_lo = wasm_i64x2_extract_lane(vidx, 0);
153 const uint64_t vidx_hi = wasm_i64x2_extract_lane(vidx, 1);
154 const float vl0 = *((const float*) ((uintptr_t) xnn_table_exp2minus_k_over_64 + (uint32_t) vidx_lo));
155 const float vl1 = *((const float*) ((uintptr_t) xnn_table_exp2minus_k_over_64 + (uint32_t) (vidx_lo >> 32)));
156 const float vl2 = *((const float*) ((uintptr_t) xnn_table_exp2minus_k_over_64 + (uint32_t) vidx_hi));
157 const float vl3 = *((const float*) ((uintptr_t) xnn_table_exp2minus_k_over_64 + (uint32_t) (vidx_hi >> 32)));
158 const v128_t vl = wasm_f32x4_make(vl0, vl1, vl2, vl3);
159
160 const v128_t vs = wasm_i32x4_add(vl, ve);
161 vn = wasm_f32x4_sub(vn, vmagic_bias);
162
163 v128_t vt = wasm_f32x4_add(vz, wasm_f32x4_mul(vn, vln2_hi));
164 vt = wasm_f32x4_add(vt, wasm_f32x4_mul(vn, vln2_lo));
165
166 v128_t vp = wasm_f32x4_mul(vt, vc2);
167 vp = wasm_f32x4_sub(vt, wasm_f32x4_mul(vp, vt));
168
169 const v128_t vy = wasm_f32x4_sub(vs, wasm_f32x4_mul(vs, vp));
170 const v128_t vd = wasm_f32x4_add(vy, vone);
171
172 v128_t vf = wasm_f32x4_div(vy, vd);
173 vf = wasm_v128_andnot(vf, wasm_f32x4_gt(vz, vdenorm_cutoff));
174 vf = wasm_v128_bitselect(vf, wasm_f32x4_sub(vone, vf), wasm_i32x4_shr(vx, 31));
175
176 if (n & (2 * sizeof(float))) {
177 *((double*) y) = wasm_f64x2_extract_lane(vf, 0);
178 vf = wasm_v32x4_shuffle(vf, vf, 2, 3, 2, 3);
179 y += 2;
180 }
181 if (n & (1 * sizeof(float))) {
182 *y = wasm_f32x4_extract_lane(vf, 0);
183 }
184 }
185 }
186