1 // Auto-generated file. Do not edit!
2 // Template: src/f16-f32-vcvt/wasmsimd-int16.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_int16_x32(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_int16_x32(
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_int16.sign_mask);
30 const v128_t vexp_offset = wasm_v128_load64_splat(params->wasmsimd_int16.exp_offset);
31 const v128_t vexp_scale = wasm_v128_load64_splat(params->wasmsimd_int16.exp_scale);
32 const v128_t vmagic_mask = wasm_v128_load64_splat(params->wasmsimd_int16.magic_mask);
33 const v128_t vmagic_bias = wasm_v128_load64_splat(params->wasmsimd_int16.magic_bias);
34 const v128_t vdenorm_cutoff = wasm_v128_load64_splat(params->wasmsimd_int16.denorm_cutoff);
35
36 const uint16_t* i = (const uint16_t*) input;
37 for (; n >= 32 * sizeof(uint16_t); n -= 32 * sizeof(uint16_t)) {
38 const v128_t vh0 = wasm_v128_load(i);
39 const v128_t vh1 = wasm_v128_load(i + 8);
40 const v128_t vh2 = wasm_v128_load(i + 16);
41 const v128_t vh3 = wasm_v128_load(i + 24);
42 i += 32;
43
44 const v128_t vsign0 = wasm_v128_and(vh0, vsign_mask);
45 const v128_t vsign1 = wasm_v128_and(vh1, vsign_mask);
46 const v128_t vsign2 = wasm_v128_and(vh2, vsign_mask);
47 const v128_t vsign3 = wasm_v128_and(vh3, vsign_mask);
48
49 const v128_t vnonsign0 = wasm_v128_xor(vh0, vsign0);
50 const v128_t vnonsign1 = wasm_v128_xor(vh1, vsign1);
51 const v128_t vnonsign2 = wasm_v128_xor(vh2, vsign2);
52 const v128_t vnonsign3 = wasm_v128_xor(vh3, vsign3);
53
54 const v128_t vprenorm0 = wasm_i16x8_shl(vnonsign0, 13);
55 const v128_t vprenorm1 = wasm_i16x8_add(wasm_u16x8_shr(vnonsign0, 3), vexp_offset);
56 const v128_t vprenorm2 = wasm_i16x8_shl(vnonsign1, 13);
57 const v128_t vprenorm3 = wasm_i16x8_add(wasm_u16x8_shr(vnonsign1, 3), vexp_offset);
58 const v128_t vprenorm4 = wasm_i16x8_shl(vnonsign2, 13);
59 const v128_t vprenorm5 = wasm_i16x8_add(wasm_u16x8_shr(vnonsign2, 3), vexp_offset);
60 const v128_t vprenorm6 = wasm_i16x8_shl(vnonsign3, 13);
61 const v128_t vprenorm7 = wasm_i16x8_add(wasm_u16x8_shr(vnonsign3, 3), vexp_offset);
62
63 const v128_t vnorm0 = wasm_f32x4_mul(wasm_v16x8_shuffle(vprenorm0, vprenorm1, 0, 8, 1, 9, 2, 10, 3, 11), vexp_scale);
64 const v128_t vnorm1 = wasm_f32x4_mul(wasm_v16x8_shuffle(vprenorm0, vprenorm1, 4, 12, 5, 13, 6, 14, 7, 15), vexp_scale);
65 const v128_t vnorm2 = wasm_f32x4_mul(wasm_v16x8_shuffle(vprenorm2, vprenorm3, 0, 8, 1, 9, 2, 10, 3, 11), vexp_scale);
66 const v128_t vnorm3 = wasm_f32x4_mul(wasm_v16x8_shuffle(vprenorm2, vprenorm3, 4, 12, 5, 13, 6, 14, 7, 15), vexp_scale);
67 const v128_t vnorm4 = wasm_f32x4_mul(wasm_v16x8_shuffle(vprenorm4, vprenorm5, 0, 8, 1, 9, 2, 10, 3, 11), vexp_scale);
68 const v128_t vnorm5 = wasm_f32x4_mul(wasm_v16x8_shuffle(vprenorm4, vprenorm5, 4, 12, 5, 13, 6, 14, 7, 15), vexp_scale);
69 const v128_t vnorm6 = wasm_f32x4_mul(wasm_v16x8_shuffle(vprenorm6, vprenorm7, 0, 8, 1, 9, 2, 10, 3, 11), vexp_scale);
70 const v128_t vnorm7 = wasm_f32x4_mul(wasm_v16x8_shuffle(vprenorm6, vprenorm7, 4, 12, 5, 13, 6, 14, 7, 15), vexp_scale);
71
72 const v128_t vdenorm0 = wasm_f32x4_sub(wasm_v16x8_shuffle(vnonsign0, vmagic_mask, 0, 8, 1, 9, 2, 10, 3, 11), vmagic_bias);
73 const v128_t vdenorm1 = wasm_f32x4_sub(wasm_v16x8_shuffle(vnonsign0, vmagic_mask, 4, 12, 5, 13, 6, 14, 7, 15), vmagic_bias);
74 const v128_t vdenorm2 = wasm_f32x4_sub(wasm_v16x8_shuffle(vnonsign1, vmagic_mask, 0, 8, 1, 9, 2, 10, 3, 11), vmagic_bias);
75 const v128_t vdenorm3 = wasm_f32x4_sub(wasm_v16x8_shuffle(vnonsign1, vmagic_mask, 4, 12, 5, 13, 6, 14, 7, 15), vmagic_bias);
76 const v128_t vdenorm4 = wasm_f32x4_sub(wasm_v16x8_shuffle(vnonsign2, vmagic_mask, 0, 8, 1, 9, 2, 10, 3, 11), vmagic_bias);
77 const v128_t vdenorm5 = wasm_f32x4_sub(wasm_v16x8_shuffle(vnonsign2, vmagic_mask, 4, 12, 5, 13, 6, 14, 7, 15), vmagic_bias);
78 const v128_t vdenorm6 = wasm_f32x4_sub(wasm_v16x8_shuffle(vnonsign3, vmagic_mask, 0, 8, 1, 9, 2, 10, 3, 11), vmagic_bias);
79 const v128_t vdenorm7 = wasm_f32x4_sub(wasm_v16x8_shuffle(vnonsign3, vmagic_mask, 4, 12, 5, 13, 6, 14, 7, 15), vmagic_bias);
80
81 const v128_t vmask0 = wasm_i16x8_gt(vnonsign0, vdenorm_cutoff);
82 const v128_t vmask1 = wasm_i16x8_gt(vnonsign1, vdenorm_cutoff);
83 const v128_t vmask2 = wasm_i16x8_gt(vnonsign2, vdenorm_cutoff);
84 const v128_t vmask3 = wasm_i16x8_gt(vnonsign3, vdenorm_cutoff);
85 const v128_t vzero = wasm_i16x8_const_splat(0);
86
87 const v128_t vxmask0 = wasm_i32x4_extend_low_i16x8(vmask0);
88 const v128_t vxmask1 = wasm_i32x4_extend_high_i16x8(vmask0);
89 const v128_t vxmask2 = wasm_i32x4_extend_low_i16x8(vmask1);
90 const v128_t vxmask3 = wasm_i32x4_extend_high_i16x8(vmask1);
91 const v128_t vxmask4 = wasm_i32x4_extend_low_i16x8(vmask2);
92 const v128_t vxmask5 = wasm_i32x4_extend_high_i16x8(vmask2);
93 const v128_t vxmask6 = wasm_i32x4_extend_low_i16x8(vmask3);
94 const v128_t vxmask7 = wasm_i32x4_extend_high_i16x8(vmask3);
95
96 const v128_t vf0 = wasm_v128_or(wasm_v16x8_shuffle(vzero, vsign0, 0, 8, 1, 9, 2, 10, 3, 11),
97 wasm_v128_bitselect(vnorm0, vdenorm0, vxmask0));
98 const v128_t vf1 = wasm_v128_or(wasm_v16x8_shuffle(vzero, vsign0, 4, 12, 5, 13, 6, 14, 7, 15),
99 wasm_v128_bitselect(vnorm1, vdenorm1, vxmask1));
100 const v128_t vf2 = wasm_v128_or(wasm_v16x8_shuffle(vzero, vsign1, 0, 8, 1, 9, 2, 10, 3, 11),
101 wasm_v128_bitselect(vnorm2, vdenorm2, vxmask2));
102 const v128_t vf3 = wasm_v128_or(wasm_v16x8_shuffle(vzero, vsign1, 4, 12, 5, 13, 6, 14, 7, 15),
103 wasm_v128_bitselect(vnorm3, vdenorm3, vxmask3));
104 const v128_t vf4 = wasm_v128_or(wasm_v16x8_shuffle(vzero, vsign2, 0, 8, 1, 9, 2, 10, 3, 11),
105 wasm_v128_bitselect(vnorm4, vdenorm4, vxmask4));
106 const v128_t vf5 = wasm_v128_or(wasm_v16x8_shuffle(vzero, vsign2, 4, 12, 5, 13, 6, 14, 7, 15),
107 wasm_v128_bitselect(vnorm5, vdenorm5, vxmask5));
108 const v128_t vf6 = wasm_v128_or(wasm_v16x8_shuffle(vzero, vsign3, 0, 8, 1, 9, 2, 10, 3, 11),
109 wasm_v128_bitselect(vnorm6, vdenorm6, vxmask6));
110 const v128_t vf7 = wasm_v128_or(wasm_v16x8_shuffle(vzero, vsign3, 4, 12, 5, 13, 6, 14, 7, 15),
111 wasm_v128_bitselect(vnorm7, vdenorm7, vxmask7));
112
113 wasm_v128_store(output, vf0);
114 wasm_v128_store(output + 4, vf1);
115 wasm_v128_store(output + 8, vf2);
116 wasm_v128_store(output + 12, vf3);
117 wasm_v128_store(output + 16, vf4);
118 wasm_v128_store(output + 20, vf5);
119 wasm_v128_store(output + 24, vf6);
120 wasm_v128_store(output + 28, vf7);
121 output += 32;
122 }
123 for (; n >= 8 * sizeof(uint16_t); n -= 8 * sizeof(uint16_t)) {
124 const v128_t vh = wasm_v128_load(i);
125 i += 8;
126
127 const v128_t vsign = wasm_v128_and(vh, vsign_mask);
128
129 const v128_t vnonsign = wasm_v128_xor(vh, vsign);
130
131 const v128_t vprenorm_lo = wasm_i16x8_shl(vnonsign, 13);
132 const v128_t vprenorm_hi = wasm_i16x8_add(wasm_u16x8_shr(vnonsign, 3), vexp_offset);
133
134 const v128_t vnorm_lo = wasm_f32x4_mul(wasm_v16x8_shuffle(vprenorm_lo, vprenorm_hi, 0, 8, 1, 9, 2, 10, 3, 11), vexp_scale);
135 const v128_t vnorm_hi = wasm_f32x4_mul(wasm_v16x8_shuffle(vprenorm_lo, vprenorm_hi, 4, 12, 5, 13, 6, 14, 7, 15), vexp_scale);
136
137 const v128_t vdenorm_lo = wasm_f32x4_sub(wasm_v16x8_shuffle(vnonsign, vmagic_mask, 0, 8, 1, 9, 2, 10, 3, 11), vmagic_bias);
138 const v128_t vdenorm_hi = wasm_f32x4_sub(wasm_v16x8_shuffle(vnonsign, vmagic_mask, 4, 12, 5, 13, 6, 14, 7, 15), vmagic_bias);
139
140 const v128_t vmask = wasm_i16x8_gt(vnonsign, vdenorm_cutoff);
141 const v128_t vzero = wasm_i16x8_const_splat(0);
142
143 const v128_t vxmask_lo = wasm_i32x4_extend_low_i16x8(vmask);
144 const v128_t vf_lo = wasm_v128_or(wasm_v16x8_shuffle(vzero, vsign, 0, 8, 1, 9, 2, 10, 3, 11),
145 wasm_v128_bitselect(vnorm_lo, vdenorm_lo, vxmask_lo));
146
147 const v128_t vxmask_hi = wasm_i32x4_extend_high_i16x8(vmask);
148 const v128_t vf_hi = wasm_v128_or(wasm_v16x8_shuffle(vzero, vsign, 4, 12, 5, 13, 6, 14, 7, 15),
149 wasm_v128_bitselect(vnorm_hi, vdenorm_hi, vxmask_hi));
150
151 wasm_v128_store(output, vf_lo);
152 wasm_v128_store(output + 4, vf_hi);
153 output += 8;
154 }
155 if XNN_UNLIKELY(n != 0) {
156 assert(n >= 1 * sizeof(uint16_t));
157 assert(n <= 7 * sizeof(uint16_t));
158 const v128_t vh = wasm_v128_load(i);
159
160 const v128_t vsign = wasm_v128_and(vh, vsign_mask);
161
162 const v128_t vnonsign = wasm_v128_xor(vh, vsign);
163
164 const v128_t vprenorm_lo = wasm_i16x8_shl(vnonsign, 13);
165 const v128_t vprenorm_hi = wasm_i16x8_add(wasm_u16x8_shr(vnonsign, 3), vexp_offset);
166
167 const v128_t vnorm_lo = wasm_f32x4_mul(wasm_v16x8_shuffle(vprenorm_lo, vprenorm_hi, 0, 8, 1, 9, 2, 10, 3, 11), vexp_scale);
168 const v128_t vnorm_hi = wasm_f32x4_mul(wasm_v16x8_shuffle(vprenorm_lo, vprenorm_hi, 4, 12, 5, 13, 6, 14, 7, 15), vexp_scale);
169
170 const v128_t vdenorm_lo = wasm_f32x4_sub(wasm_v16x8_shuffle(vnonsign, vmagic_mask, 0, 8, 1, 9, 2, 10, 3, 11), vmagic_bias);
171 const v128_t vdenorm_hi = wasm_f32x4_sub(wasm_v16x8_shuffle(vnonsign, vmagic_mask, 4, 12, 5, 13, 6, 14, 7, 15), vmagic_bias);
172
173 const v128_t vmask = wasm_i16x8_gt(vnonsign, vdenorm_cutoff);
174 const v128_t vzero = wasm_i16x8_const_splat(0);
175
176 const v128_t vxmask_lo = wasm_i32x4_extend_low_i16x8(vmask);
177 v128_t vf = wasm_v128_or(wasm_v16x8_shuffle(vzero, vsign, 0, 8, 1, 9, 2, 10, 3, 11),
178 wasm_v128_bitselect(vnorm_lo, vdenorm_lo, vxmask_lo));
179
180 if (n & (4 * sizeof(uint16_t))) {
181 wasm_v128_store(output, vf);
182 output += 4;
183
184 const v128_t vxmask_hi = wasm_i32x4_extend_high_i16x8(vmask);
185 vf = wasm_v128_or(wasm_v16x8_shuffle(vzero, vsign, 4, 12, 5, 13, 6, 14, 7, 15),
186 wasm_v128_bitselect(vnorm_hi, vdenorm_hi, vxmask_hi));
187 }
188 if (n & (2 * sizeof(uint16_t))) {
189 *((double*) output) = wasm_f64x2_extract_lane(vf, 0);
190 output += 2;
191
192 vf = wasm_v64x2_shuffle(vf, vf, 1, 1);
193 }
194 if (n & (1 * sizeof(uint16_t))) {
195 *((float*) output) = wasm_f32x4_extract_lane(vf, 0);
196 }
197 }
198 }
199