1 // Auto-generated file. Do not edit!
2 // Template: src/f16-f32-vcvt/wasmsimd-int32.c.in
3 // Generator: tools/xngen
4 //
5 // Copyright 2021 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/vcvt.h>
16
17
xnn_f16_f32_vcvt_ukernel__wasmsimd_int32_x16(size_t n,const void * input,float * output,const union xnn_f16_f32_cvt_params params[restrict XNN_MIN_ELEMENTS (1)])18 void xnn_f16_f32_vcvt_ukernel__wasmsimd_int32_x16(
19 size_t n,
20 const void* input,
21 float* output,
22 const union xnn_f16_f32_cvt_params params[restrict XNN_MIN_ELEMENTS(1)]) XNN_OOB_READS
23 {
24 assert(n != 0);
25 assert(n % sizeof(uint16_t) == 0);
26 assert(input != NULL);
27 assert(output != NULL);
28
29 const v128_t vsign_mask = wasm_v128_load64_splat(params->wasmsimd_int32.sign_mask);
30 const v128_t vexp_offset = wasm_v128_load64_splat(params->wasmsimd_int32.exp_offset);
31 const v128_t vexp_scale = wasm_v128_load64_splat(params->wasmsimd_int32.exp_scale);
32 const v128_t vmagic_bias = wasm_v128_load64_splat(params->wasmsimd_int32.magic_bias);
33 const v128_t vdenorm_cutoff = wasm_v128_load64_splat(params->wasmsimd_int32.denorm_cutoff);
34
35 const uint16_t* i = (const uint16_t*) input;
36 for (; n >= 16 * sizeof(uint16_t); n -= 16 * sizeof(uint16_t)) {
37 const v128_t vh0 = wasm_v128_load(i);
38 const v128_t vh1 = wasm_v128_load(i + 8);
39 i += 16;
40
41 const v128_t vzero = wasm_i16x8_const_splat(0);
42 const v128_t vw0 = wasm_v16x8_shuffle(vzero, vh0, 0, 8, 1, 9, 2, 10, 3, 11);
43 const v128_t vw1 = wasm_v16x8_shuffle(vzero, vh0, 4, 12, 5, 13, 6, 14, 7, 15);
44 const v128_t vw2 = wasm_v16x8_shuffle(vzero, vh1, 0, 8, 1, 9, 2, 10, 3, 11);
45 const v128_t vw3 = wasm_v16x8_shuffle(vzero, vh1, 4, 12, 5, 13, 6, 14, 7, 15);
46
47 const v128_t vsign0 = wasm_v128_and(vw0, vsign_mask);
48 const v128_t vsign1 = wasm_v128_and(vw1, vsign_mask);
49 const v128_t vsign2 = wasm_v128_and(vw2, vsign_mask);
50 const v128_t vsign3 = wasm_v128_and(vw3, vsign_mask);
51
52 const v128_t vnonsign0 = wasm_v128_xor(vw0, vsign0);
53 const v128_t vnonsign1 = wasm_v128_xor(vw1, vsign1);
54 const v128_t vnonsign2 = wasm_v128_xor(vw2, vsign2);
55 const v128_t vnonsign3 = wasm_v128_xor(vw3, vsign3);
56
57 const v128_t vnorm0 = wasm_f32x4_mul(wasm_i32x4_add(wasm_u32x4_shr(vnonsign0, 3), vexp_offset), vexp_scale);
58 const v128_t vnorm1 = wasm_f32x4_mul(wasm_i32x4_add(wasm_u32x4_shr(vnonsign1, 3), vexp_offset), vexp_scale);
59 const v128_t vnorm2 = wasm_f32x4_mul(wasm_i32x4_add(wasm_u32x4_shr(vnonsign2, 3), vexp_offset), vexp_scale);
60 const v128_t vnorm3 = wasm_f32x4_mul(wasm_i32x4_add(wasm_u32x4_shr(vnonsign3, 3), vexp_offset), vexp_scale);
61
62 const v128_t vdenorm0 = wasm_f32x4_sub(wasm_v128_or(wasm_u32x4_shr(vnonsign0, 16), vmagic_bias), vmagic_bias);
63 const v128_t vdenorm1 = wasm_f32x4_sub(wasm_v128_or(wasm_u32x4_shr(vnonsign1, 16), vmagic_bias), vmagic_bias);
64 const v128_t vdenorm2 = wasm_f32x4_sub(wasm_v128_or(wasm_u32x4_shr(vnonsign2, 16), vmagic_bias), vmagic_bias);
65 const v128_t vdenorm3 = wasm_f32x4_sub(wasm_v128_or(wasm_u32x4_shr(vnonsign3, 16), vmagic_bias), vmagic_bias);
66
67 const v128_t vxmask0 = wasm_i32x4_gt(vnonsign0, vdenorm_cutoff);
68 const v128_t vxmask1 = wasm_i32x4_gt(vnonsign1, vdenorm_cutoff);
69 const v128_t vxmask2 = wasm_i32x4_gt(vnonsign2, vdenorm_cutoff);
70 const v128_t vxmask3 = wasm_i32x4_gt(vnonsign3, vdenorm_cutoff);
71
72 const v128_t vf0 = wasm_v128_or(vsign0, wasm_v128_bitselect(vnorm0, vdenorm0, vxmask0));
73 const v128_t vf1 = wasm_v128_or(vsign1, wasm_v128_bitselect(vnorm1, vdenorm1, vxmask1));
74 const v128_t vf2 = wasm_v128_or(vsign2, wasm_v128_bitselect(vnorm2, vdenorm2, vxmask2));
75 const v128_t vf3 = wasm_v128_or(vsign3, wasm_v128_bitselect(vnorm3, vdenorm3, vxmask3));
76
77 wasm_v128_store(output, vf0);
78 wasm_v128_store(output + 4, vf1);
79 wasm_v128_store(output + 8, vf2);
80 wasm_v128_store(output + 12, vf3);
81 output += 16;
82 }
83 for (; n >= 8 * sizeof(uint16_t); n -= 8 * sizeof(uint16_t)) {
84 const v128_t vh = wasm_v128_load(i);
85 i += 8;
86
87 const v128_t vzero = wasm_i16x8_const_splat(0);
88 const v128_t vw_lo = wasm_v16x8_shuffle(vzero, vh, 0, 8, 1, 9, 2, 10, 3, 11);
89 const v128_t vw_hi = wasm_v16x8_shuffle(vzero, vh, 4, 12, 5, 13, 6, 14, 7, 15);
90
91 const v128_t vsign_lo = wasm_v128_and(vw_lo, vsign_mask);
92 const v128_t vsign_hi = wasm_v128_and(vw_hi, vsign_mask);
93
94 const v128_t vnonsign_lo = wasm_v128_xor(vw_lo, vsign_lo);
95 const v128_t vnonsign_hi = wasm_v128_xor(vw_hi, vsign_hi);
96
97 const v128_t vnorm_lo = wasm_f32x4_mul(wasm_i32x4_add(wasm_u32x4_shr(vnonsign_lo, 3), vexp_offset), vexp_scale);
98 const v128_t vnorm_hi = wasm_f32x4_mul(wasm_i32x4_add(wasm_u32x4_shr(vnonsign_hi, 3), vexp_offset), vexp_scale);
99
100 const v128_t vdenorm_lo = wasm_f32x4_sub(wasm_v128_or(wasm_u32x4_shr(vnonsign_lo, 16), vmagic_bias), vmagic_bias);
101 const v128_t vdenorm_hi = wasm_f32x4_sub(wasm_v128_or(wasm_u32x4_shr(vnonsign_hi, 16), vmagic_bias), vmagic_bias);
102
103 const v128_t vxmask_lo = wasm_i32x4_gt(vnonsign_lo, vdenorm_cutoff);
104 const v128_t vxmask_hi = wasm_i32x4_gt(vnonsign_hi, vdenorm_cutoff);
105
106 const v128_t vf_lo = wasm_v128_or(vsign_lo, wasm_v128_bitselect(vnorm_lo, vdenorm_lo, vxmask_lo));
107 const v128_t vf_hi = wasm_v128_or(vsign_hi, wasm_v128_bitselect(vnorm_hi, vdenorm_hi, vxmask_hi));
108
109 wasm_v128_store(output, vf_lo);
110 wasm_v128_store(output + 4, vf_hi);
111 output += 8;
112 }
113 if XNN_UNLIKELY(n != 0) {
114 assert(n >= 1 * sizeof(uint16_t));
115 assert(n <= 7 * sizeof(uint16_t));
116 const v128_t vh = wasm_v128_load(i);
117
118 const v128_t vzero = wasm_i16x8_const_splat(0);
119 const v128_t vw_lo = wasm_v16x8_shuffle(vzero, vh, 0, 8, 1, 9, 2, 10, 3, 11);
120 const v128_t vw_hi = wasm_v16x8_shuffle(vzero, vh, 4, 12, 5, 13, 6, 14, 7, 15);
121
122 const v128_t vsign_lo = wasm_v128_and(vw_lo, vsign_mask);
123 const v128_t vsign_hi = wasm_v128_and(vw_hi, vsign_mask);
124
125 const v128_t vnonsign_lo = wasm_v128_xor(vw_lo, vsign_lo);
126 const v128_t vnonsign_hi = wasm_v128_xor(vw_hi, vsign_hi);
127
128 const v128_t vnorm_lo = wasm_f32x4_mul(wasm_i32x4_add(wasm_u32x4_shr(vnonsign_lo, 3), vexp_offset), vexp_scale);
129 const v128_t vnorm_hi = wasm_f32x4_mul(wasm_i32x4_add(wasm_u32x4_shr(vnonsign_hi, 3), vexp_offset), vexp_scale);
130
131 const v128_t vdenorm_lo = wasm_f32x4_sub(wasm_v128_or(wasm_u32x4_shr(vnonsign_lo, 16), vmagic_bias), vmagic_bias);
132 const v128_t vdenorm_hi = wasm_f32x4_sub(wasm_v128_or(wasm_u32x4_shr(vnonsign_hi, 16), vmagic_bias), vmagic_bias);
133
134 const v128_t vxmask_lo = wasm_i32x4_gt(vnonsign_lo, vdenorm_cutoff);
135 v128_t vf = wasm_v128_or(vsign_lo, wasm_v128_bitselect(vnorm_lo, vdenorm_lo, vxmask_lo));
136
137 if (n & (4 * sizeof(uint16_t))) {
138 wasm_v128_store(output, vf);
139 output += 4;
140
141 const v128_t vxmask_hi = wasm_i32x4_gt(vnonsign_hi, vdenorm_cutoff);
142 vf = wasm_v128_or(vsign_hi, wasm_v128_bitselect(vnorm_hi, vdenorm_hi, vxmask_hi));
143 }
144 if (n & (2 * sizeof(uint16_t))) {
145 *((double*) output) = wasm_f64x2_extract_lane(vf, 0);
146 output += 2;
147
148 vf = wasm_v64x2_shuffle(vf, vf, 1, 1);
149 }
150 if (n & (1 * sizeof(uint16_t))) {
151 *((float*) output) = wasm_f32x4_extract_lane(vf, 0);
152 }
153 }
154 }
155