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_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_int16_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_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 >= 16 * sizeof(uint16_t); n -= 16 * sizeof(uint16_t)) {
38 const v128_t vh0 = wasm_v128_load(i);
39 const v128_t vh1 = wasm_v128_load(i + 8);
40 i += 16;
41
42 const v128_t vsign0 = wasm_v128_and(vh0, vsign_mask);
43 const v128_t vsign1 = wasm_v128_and(vh1, vsign_mask);
44
45 const v128_t vnonsign0 = wasm_v128_xor(vh0, vsign0);
46 const v128_t vnonsign1 = wasm_v128_xor(vh1, vsign1);
47
48 const v128_t vprenorm0 = wasm_i16x8_shl(vnonsign0, 13);
49 const v128_t vprenorm1 = wasm_i16x8_add(wasm_u16x8_shr(vnonsign0, 3), vexp_offset);
50 const v128_t vprenorm2 = wasm_i16x8_shl(vnonsign1, 13);
51 const v128_t vprenorm3 = wasm_i16x8_add(wasm_u16x8_shr(vnonsign1, 3), vexp_offset);
52
53 const v128_t vnorm0 = wasm_f32x4_mul(wasm_v16x8_shuffle(vprenorm0, vprenorm1, 0, 8, 1, 9, 2, 10, 3, 11), vexp_scale);
54 const v128_t vnorm1 = wasm_f32x4_mul(wasm_v16x8_shuffle(vprenorm0, vprenorm1, 4, 12, 5, 13, 6, 14, 7, 15), vexp_scale);
55 const v128_t vnorm2 = wasm_f32x4_mul(wasm_v16x8_shuffle(vprenorm2, vprenorm3, 0, 8, 1, 9, 2, 10, 3, 11), vexp_scale);
56 const v128_t vnorm3 = wasm_f32x4_mul(wasm_v16x8_shuffle(vprenorm2, vprenorm3, 4, 12, 5, 13, 6, 14, 7, 15), vexp_scale);
57
58 const v128_t vdenorm0 = wasm_f32x4_sub(wasm_v16x8_shuffle(vnonsign0, vmagic_mask, 0, 8, 1, 9, 2, 10, 3, 11), vmagic_bias);
59 const v128_t vdenorm1 = wasm_f32x4_sub(wasm_v16x8_shuffle(vnonsign0, vmagic_mask, 4, 12, 5, 13, 6, 14, 7, 15), vmagic_bias);
60 const v128_t vdenorm2 = wasm_f32x4_sub(wasm_v16x8_shuffle(vnonsign1, vmagic_mask, 0, 8, 1, 9, 2, 10, 3, 11), vmagic_bias);
61 const v128_t vdenorm3 = wasm_f32x4_sub(wasm_v16x8_shuffle(vnonsign1, vmagic_mask, 4, 12, 5, 13, 6, 14, 7, 15), vmagic_bias);
62
63 const v128_t vmask0 = wasm_i16x8_gt(vnonsign0, vdenorm_cutoff);
64 const v128_t vmask1 = wasm_i16x8_gt(vnonsign1, vdenorm_cutoff);
65 const v128_t vzero = wasm_i16x8_const_splat(0);
66
67 const v128_t vxmask0 = wasm_i32x4_extend_low_i16x8(vmask0);
68 const v128_t vxmask1 = wasm_i32x4_extend_high_i16x8(vmask0);
69 const v128_t vxmask2 = wasm_i32x4_extend_low_i16x8(vmask1);
70 const v128_t vxmask3 = wasm_i32x4_extend_high_i16x8(vmask1);
71
72 const v128_t vf0 = wasm_v128_or(wasm_v16x8_shuffle(vzero, vsign0, 0, 8, 1, 9, 2, 10, 3, 11),
73 wasm_v128_bitselect(vnorm0, vdenorm0, vxmask0));
74 const v128_t vf1 = wasm_v128_or(wasm_v16x8_shuffle(vzero, vsign0, 4, 12, 5, 13, 6, 14, 7, 15),
75 wasm_v128_bitselect(vnorm1, vdenorm1, vxmask1));
76 const v128_t vf2 = wasm_v128_or(wasm_v16x8_shuffle(vzero, vsign1, 0, 8, 1, 9, 2, 10, 3, 11),
77 wasm_v128_bitselect(vnorm2, vdenorm2, vxmask2));
78 const v128_t vf3 = wasm_v128_or(wasm_v16x8_shuffle(vzero, vsign1, 4, 12, 5, 13, 6, 14, 7, 15),
79 wasm_v128_bitselect(vnorm3, vdenorm3, vxmask3));
80
81 wasm_v128_store(output, vf0);
82 wasm_v128_store(output + 4, vf1);
83 wasm_v128_store(output + 8, vf2);
84 wasm_v128_store(output + 12, vf3);
85 output += 16;
86 }
87 for (; n >= 8 * sizeof(uint16_t); n -= 8 * sizeof(uint16_t)) {
88 const v128_t vh = wasm_v128_load(i);
89 i += 8;
90
91 const v128_t vsign = wasm_v128_and(vh, vsign_mask);
92
93 const v128_t vnonsign = wasm_v128_xor(vh, vsign);
94
95 const v128_t vprenorm_lo = wasm_i16x8_shl(vnonsign, 13);
96 const v128_t vprenorm_hi = wasm_i16x8_add(wasm_u16x8_shr(vnonsign, 3), vexp_offset);
97
98 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);
99 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);
100
101 const v128_t vdenorm_lo = wasm_f32x4_sub(wasm_v16x8_shuffle(vnonsign, vmagic_mask, 0, 8, 1, 9, 2, 10, 3, 11), vmagic_bias);
102 const v128_t vdenorm_hi = wasm_f32x4_sub(wasm_v16x8_shuffle(vnonsign, vmagic_mask, 4, 12, 5, 13, 6, 14, 7, 15), vmagic_bias);
103
104 const v128_t vmask = wasm_i16x8_gt(vnonsign, vdenorm_cutoff);
105 const v128_t vzero = wasm_i16x8_const_splat(0);
106
107 const v128_t vxmask_lo = wasm_i32x4_extend_low_i16x8(vmask);
108 const v128_t vf_lo = wasm_v128_or(wasm_v16x8_shuffle(vzero, vsign, 0, 8, 1, 9, 2, 10, 3, 11),
109 wasm_v128_bitselect(vnorm_lo, vdenorm_lo, vxmask_lo));
110
111 const v128_t vxmask_hi = wasm_i32x4_extend_high_i16x8(vmask);
112 const v128_t vf_hi = wasm_v128_or(wasm_v16x8_shuffle(vzero, vsign, 4, 12, 5, 13, 6, 14, 7, 15),
113 wasm_v128_bitselect(vnorm_hi, vdenorm_hi, vxmask_hi));
114
115 wasm_v128_store(output, vf_lo);
116 wasm_v128_store(output + 4, vf_hi);
117 output += 8;
118 }
119 if XNN_UNLIKELY(n != 0) {
120 assert(n >= 1 * sizeof(uint16_t));
121 assert(n <= 7 * sizeof(uint16_t));
122 const v128_t vh = wasm_v128_load(i);
123
124 const v128_t vsign = wasm_v128_and(vh, vsign_mask);
125
126 const v128_t vnonsign = wasm_v128_xor(vh, vsign);
127
128 const v128_t vprenorm_lo = wasm_i16x8_shl(vnonsign, 13);
129 const v128_t vprenorm_hi = wasm_i16x8_add(wasm_u16x8_shr(vnonsign, 3), vexp_offset);
130
131 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);
132 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);
133
134 const v128_t vdenorm_lo = wasm_f32x4_sub(wasm_v16x8_shuffle(vnonsign, vmagic_mask, 0, 8, 1, 9, 2, 10, 3, 11), vmagic_bias);
135 const v128_t vdenorm_hi = wasm_f32x4_sub(wasm_v16x8_shuffle(vnonsign, vmagic_mask, 4, 12, 5, 13, 6, 14, 7, 15), vmagic_bias);
136
137 const v128_t vmask = wasm_i16x8_gt(vnonsign, vdenorm_cutoff);
138 const v128_t vzero = wasm_i16x8_const_splat(0);
139
140 const v128_t vxmask_lo = wasm_i32x4_extend_low_i16x8(vmask);
141 v128_t vf = wasm_v128_or(wasm_v16x8_shuffle(vzero, vsign, 0, 8, 1, 9, 2, 10, 3, 11),
142 wasm_v128_bitselect(vnorm_lo, vdenorm_lo, vxmask_lo));
143
144 if (n & (4 * sizeof(uint16_t))) {
145 wasm_v128_store(output, vf);
146 output += 4;
147
148 const v128_t vxmask_hi = wasm_i32x4_extend_high_i16x8(vmask);
149 vf = wasm_v128_or(wasm_v16x8_shuffle(vzero, vsign, 4, 12, 5, 13, 6, 14, 7, 15),
150 wasm_v128_bitselect(vnorm_hi, vdenorm_hi, vxmask_hi));
151 }
152 if (n & (2 * sizeof(uint16_t))) {
153 *((double*) output) = wasm_f64x2_extract_lane(vf, 0);
154 output += 2;
155
156 vf = wasm_v64x2_shuffle(vf, vf, 1, 1);
157 }
158 if (n & (1 * sizeof(uint16_t))) {
159 *((float*) output) = wasm_f32x4_extract_lane(vf, 0);
160 }
161 }
162 }
163