1 // Auto-generated file. Do not edit!
2 // Template: src/f32-vsigmoid/wasmsimd-rr2-p5-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
xnn_f32_vsigmoid_ukernel__wasmsimd_rr2_p5_div_x8(size_t n,const float * x,float * y,const union xnn_f32_sigmoid_params params[restrict XNN_MIN_ELEMENTS (1)])18 void xnn_f32_vsigmoid_ukernel__wasmsimd_rr2_p5_div_x8(
19 size_t n,
20 const float* x,
21 float* y,
22 const union xnn_f32_sigmoid_params params[restrict XNN_MIN_ELEMENTS(1)]) XNN_OOB_READS
23 {
24 assert(n % sizeof(float) == 0);
25
26 const v128_t vmagic_bias = wasm_v128_load64_splat(params->wasmsimd_rr2_p5.magic_bias);
27 const v128_t vminus_log2e = wasm_v128_load64_splat(params->wasmsimd_rr2_p5.minus_log2e);
28 const v128_t vln2_hi = wasm_v128_load64_splat(params->wasmsimd_rr2_p5.ln2_hi);
29 const v128_t vln2_lo = wasm_v128_load64_splat(params->wasmsimd_rr2_p5.ln2_lo);
30 const v128_t vc5 = wasm_v128_load64_splat(params->wasmsimd_rr2_p5.c5);
31 const v128_t vc4 = wasm_v128_load64_splat(params->wasmsimd_rr2_p5.c4);
32 const v128_t vc3 = wasm_v128_load64_splat(params->wasmsimd_rr2_p5.c3);
33 const v128_t vc2 = wasm_v128_load64_splat(params->wasmsimd_rr2_p5.c2);
34 const v128_t vc1 = wasm_v128_load64_splat(params->wasmsimd_rr2_p5.c1);
35 const v128_t vone = wasm_v128_load64_splat(params->wasmsimd_rr2_p5.one);
36 const v128_t vdenorm_cutoff = wasm_v128_load64_splat(params->wasmsimd_rr2_p5.denorm_cutoff);
37
38 for (; n >= 8 * sizeof(float); n -= 8 * sizeof(float)) {
39 const v128_t vx0123 = wasm_v128_load(x);
40 const v128_t vx4567 = wasm_v128_load(x + 4);
41 x += 8;
42
43 const v128_t vz0123 = wasm_f32x4_abs(vx0123);
44 const v128_t vz4567 = wasm_f32x4_abs(vx4567);
45
46 v128_t vn0123 = wasm_f32x4_add(vmagic_bias, wasm_f32x4_mul(vz0123, vminus_log2e));
47 v128_t vn4567 = wasm_f32x4_add(vmagic_bias, wasm_f32x4_mul(vz4567, vminus_log2e));
48
49 const v128_t vs0123 = wasm_i32x4_shl(vn0123, 23);
50 const v128_t vs4567 = wasm_i32x4_shl(vn4567, 23);
51
52 vn0123 = wasm_f32x4_sub(vn0123, vmagic_bias);
53 vn4567 = wasm_f32x4_sub(vn4567, vmagic_bias);
54
55 v128_t vt0123 = wasm_f32x4_add(vz0123, wasm_f32x4_mul(vn0123, vln2_hi));
56 v128_t vt4567 = wasm_f32x4_add(vz4567, wasm_f32x4_mul(vn4567, vln2_hi));
57
58 vt0123 = wasm_f32x4_add(vt0123, wasm_f32x4_mul(vn0123, vln2_lo));
59 vt4567 = wasm_f32x4_add(vt4567, wasm_f32x4_mul(vn4567, vln2_lo));
60
61 v128_t vp0123 = wasm_f32x4_add(vc4, wasm_f32x4_mul(vt0123, vc5));
62 v128_t vp4567 = wasm_f32x4_add(vc4, wasm_f32x4_mul(vt4567, vc5));
63
64 vp0123 = wasm_f32x4_add(vc3, wasm_f32x4_mul(vt0123, vp0123));
65 vp4567 = wasm_f32x4_add(vc3, wasm_f32x4_mul(vt4567, vp4567));
66
67 vp0123 = wasm_f32x4_add(vc2, wasm_f32x4_mul(vt0123, vp0123));
68 vp4567 = wasm_f32x4_add(vc2, wasm_f32x4_mul(vt4567, vp4567));
69
70 vp0123 = wasm_f32x4_add(vc1, wasm_f32x4_mul(vt0123, vp0123));
71 vp4567 = wasm_f32x4_add(vc1, wasm_f32x4_mul(vt4567, vp4567));
72
73 vt0123 = wasm_f32x4_mul(vt0123, vs0123);
74 vt4567 = wasm_f32x4_mul(vt4567, vs4567);
75
76 const v128_t ve0123 = wasm_f32x4_add(vs0123, wasm_f32x4_mul(vt0123, vp0123));
77 const v128_t ve4567 = wasm_f32x4_add(vs4567, wasm_f32x4_mul(vt4567, vp4567));
78
79 const v128_t vd0123 = wasm_f32x4_add(ve0123, vone);
80 const v128_t vd4567 = wasm_f32x4_add(ve4567, vone);
81
82 v128_t vf0123 = wasm_f32x4_div(ve0123, vd0123);
83 v128_t vf4567 = wasm_f32x4_div(ve4567, vd4567);
84
85 vf0123 = wasm_v128_andnot(vf0123, wasm_f32x4_gt(vz0123, vdenorm_cutoff));
86 vf4567 = wasm_v128_andnot(vf4567, wasm_f32x4_gt(vz4567, vdenorm_cutoff));
87
88 vf0123 = wasm_v128_bitselect(vf0123, wasm_f32x4_sub(vone, vf0123), wasm_i32x4_shr(vx0123, 31));
89 vf4567 = wasm_v128_bitselect(vf4567, wasm_f32x4_sub(vone, vf4567), wasm_i32x4_shr(vx4567, 31));
90
91 wasm_v128_store(y, vf0123);
92 wasm_v128_store(y + 4, vf4567);
93 y += 8;
94 }
95 for (; n >= 4 * sizeof(float); n -= 4 * sizeof(float)) {
96 const v128_t vx = wasm_v128_load(x);
97 x += 4;
98
99 const v128_t vz = wasm_f32x4_abs(vx);
100
101 v128_t vn = wasm_f32x4_add(vmagic_bias, wasm_f32x4_mul(vz, vminus_log2e));
102 const v128_t vs = wasm_i32x4_shl(vn, 23);
103 vn = wasm_f32x4_sub(vn, vmagic_bias);
104
105 v128_t vt = wasm_f32x4_add(vz, wasm_f32x4_mul(vn, vln2_hi));
106 vt = wasm_f32x4_add(vt, wasm_f32x4_mul(vn, vln2_lo));
107
108 v128_t vp = wasm_f32x4_add(vc4, wasm_f32x4_mul(vt, vc5));
109 vp = wasm_f32x4_add(vc3, wasm_f32x4_mul(vt, vp));
110 vp = wasm_f32x4_add(vc2, wasm_f32x4_mul(vt, vp));
111 vp = wasm_f32x4_add(vc1, wasm_f32x4_mul(vt, vp));
112
113 vt = wasm_f32x4_mul(vt, vs);
114 const v128_t ve = wasm_f32x4_add(vs, wasm_f32x4_mul(vt, vp));
115 const v128_t vd = wasm_f32x4_add(ve, vone);
116
117 v128_t vf = wasm_f32x4_div(ve, vd);
118 vf = wasm_v128_andnot(vf, wasm_f32x4_gt(vz, vdenorm_cutoff));
119 vf = wasm_v128_bitselect(vf, wasm_f32x4_sub(vone, vf), wasm_i32x4_shr(vx, 31));
120
121 wasm_v128_store(y, vf);
122 y += 4;
123 }
124 if XNN_UNLIKELY(n != 0) {
125 const v128_t vx = wasm_v128_load(x);
126
127 const v128_t vz = wasm_f32x4_abs(vx);
128
129 v128_t vn = wasm_f32x4_add(vmagic_bias, wasm_f32x4_mul(vz, vminus_log2e));
130 const v128_t vs = wasm_i32x4_shl(vn, 23);
131 vn = wasm_f32x4_sub(vn, vmagic_bias);
132
133 v128_t vt = wasm_f32x4_add(vz, wasm_f32x4_mul(vn, vln2_hi));
134 vt = wasm_f32x4_add(vt, wasm_f32x4_mul(vn, vln2_lo));
135
136 v128_t vp = wasm_f32x4_add(vc4, wasm_f32x4_mul(vt, vc5));
137 vp = wasm_f32x4_add(vc3, wasm_f32x4_mul(vt, vp));
138 vp = wasm_f32x4_add(vc2, wasm_f32x4_mul(vt, vp));
139 vp = wasm_f32x4_add(vc1, wasm_f32x4_mul(vt, vp));
140
141 vt = wasm_f32x4_mul(vt, vs);
142 const v128_t ve = wasm_f32x4_add(vs, wasm_f32x4_mul(vt, vp));
143 const v128_t vd = wasm_f32x4_add(ve, vone);
144
145 v128_t vf = wasm_f32x4_div(ve, vd);
146 vf = wasm_v128_andnot(vf, wasm_f32x4_gt(vz, vdenorm_cutoff));
147 vf = wasm_v128_bitselect(vf, wasm_f32x4_sub(vone, vf), wasm_i32x4_shr(vx, 31));
148
149 if (n & (2 * sizeof(float))) {
150 *((double*) y) = wasm_f64x2_extract_lane(vf, 0);
151 vf = wasm_v32x4_shuffle(vf, vf, 2, 3, 2, 3);
152 y += 2;
153 }
154 if (n & (1 * sizeof(float))) {
155 *y = wasm_f32x4_extract_lane(vf, 0);
156 }
157 }
158 }
159