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_x24(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_x24(
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 >= 24 * sizeof(uint16_t); n -= 24 * 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 i += 24;
42
43 const v128_t vsign0 = wasm_v128_and(vh0, vsign_mask);
44 const v128_t vsign1 = wasm_v128_and(vh1, vsign_mask);
45 const v128_t vsign2 = wasm_v128_and(vh2, vsign_mask);
46
47 const v128_t vnonsign0 = wasm_v128_xor(vh0, vsign0);
48 const v128_t vnonsign1 = wasm_v128_xor(vh1, vsign1);
49 const v128_t vnonsign2 = wasm_v128_xor(vh2, vsign2);
50
51 const v128_t vprenorm0 = wasm_i16x8_shl(vnonsign0, 13);
52 const v128_t vprenorm1 = wasm_i16x8_add(wasm_u16x8_shr(vnonsign0, 3), vexp_offset);
53 const v128_t vprenorm2 = wasm_i16x8_shl(vnonsign1, 13);
54 const v128_t vprenorm3 = wasm_i16x8_add(wasm_u16x8_shr(vnonsign1, 3), vexp_offset);
55 const v128_t vprenorm4 = wasm_i16x8_shl(vnonsign2, 13);
56 const v128_t vprenorm5 = wasm_i16x8_add(wasm_u16x8_shr(vnonsign2, 3), vexp_offset);
57
58 const v128_t vnorm0 = wasm_f32x4_mul(wasm_v16x8_shuffle(vprenorm0, vprenorm1, 0, 8, 1, 9, 2, 10, 3, 11), vexp_scale);
59 const v128_t vnorm1 = wasm_f32x4_mul(wasm_v16x8_shuffle(vprenorm0, vprenorm1, 4, 12, 5, 13, 6, 14, 7, 15), vexp_scale);
60 const v128_t vnorm2 = wasm_f32x4_mul(wasm_v16x8_shuffle(vprenorm2, vprenorm3, 0, 8, 1, 9, 2, 10, 3, 11), vexp_scale);
61 const v128_t vnorm3 = wasm_f32x4_mul(wasm_v16x8_shuffle(vprenorm2, vprenorm3, 4, 12, 5, 13, 6, 14, 7, 15), vexp_scale);
62 const v128_t vnorm4 = wasm_f32x4_mul(wasm_v16x8_shuffle(vprenorm4, vprenorm5, 0, 8, 1, 9, 2, 10, 3, 11), vexp_scale);
63 const v128_t vnorm5 = wasm_f32x4_mul(wasm_v16x8_shuffle(vprenorm4, vprenorm5, 4, 12, 5, 13, 6, 14, 7, 15), vexp_scale);
64
65 const v128_t vdenorm0 = wasm_f32x4_sub(wasm_v16x8_shuffle(vnonsign0, vmagic_mask, 0, 8, 1, 9, 2, 10, 3, 11), vmagic_bias);
66 const v128_t vdenorm1 = wasm_f32x4_sub(wasm_v16x8_shuffle(vnonsign0, vmagic_mask, 4, 12, 5, 13, 6, 14, 7, 15), vmagic_bias);
67 const v128_t vdenorm2 = wasm_f32x4_sub(wasm_v16x8_shuffle(vnonsign1, vmagic_mask, 0, 8, 1, 9, 2, 10, 3, 11), vmagic_bias);
68 const v128_t vdenorm3 = wasm_f32x4_sub(wasm_v16x8_shuffle(vnonsign1, vmagic_mask, 4, 12, 5, 13, 6, 14, 7, 15), vmagic_bias);
69 const v128_t vdenorm4 = wasm_f32x4_sub(wasm_v16x8_shuffle(vnonsign2, vmagic_mask, 0, 8, 1, 9, 2, 10, 3, 11), vmagic_bias);
70 const v128_t vdenorm5 = wasm_f32x4_sub(wasm_v16x8_shuffle(vnonsign2, vmagic_mask, 4, 12, 5, 13, 6, 14, 7, 15), vmagic_bias);
71
72 const v128_t vmask0 = wasm_i16x8_gt(vnonsign0, vdenorm_cutoff);
73 const v128_t vmask1 = wasm_i16x8_gt(vnonsign1, vdenorm_cutoff);
74 const v128_t vmask2 = wasm_i16x8_gt(vnonsign2, vdenorm_cutoff);
75 const v128_t vzero = wasm_i16x8_const_splat(0);
76
77 const v128_t vxmask0 = wasm_i32x4_extend_low_i16x8(vmask0);
78 const v128_t vxmask1 = wasm_i32x4_extend_high_i16x8(vmask0);
79 const v128_t vxmask2 = wasm_i32x4_extend_low_i16x8(vmask1);
80 const v128_t vxmask3 = wasm_i32x4_extend_high_i16x8(vmask1);
81 const v128_t vxmask4 = wasm_i32x4_extend_low_i16x8(vmask2);
82 const v128_t vxmask5 = wasm_i32x4_extend_high_i16x8(vmask2);
83
84 const v128_t vf0 = wasm_v128_or(wasm_v16x8_shuffle(vzero, vsign0, 0, 8, 1, 9, 2, 10, 3, 11),
85 wasm_v128_bitselect(vnorm0, vdenorm0, vxmask0));
86 const v128_t vf1 = wasm_v128_or(wasm_v16x8_shuffle(vzero, vsign0, 4, 12, 5, 13, 6, 14, 7, 15),
87 wasm_v128_bitselect(vnorm1, vdenorm1, vxmask1));
88 const v128_t vf2 = wasm_v128_or(wasm_v16x8_shuffle(vzero, vsign1, 0, 8, 1, 9, 2, 10, 3, 11),
89 wasm_v128_bitselect(vnorm2, vdenorm2, vxmask2));
90 const v128_t vf3 = wasm_v128_or(wasm_v16x8_shuffle(vzero, vsign1, 4, 12, 5, 13, 6, 14, 7, 15),
91 wasm_v128_bitselect(vnorm3, vdenorm3, vxmask3));
92 const v128_t vf4 = wasm_v128_or(wasm_v16x8_shuffle(vzero, vsign2, 0, 8, 1, 9, 2, 10, 3, 11),
93 wasm_v128_bitselect(vnorm4, vdenorm4, vxmask4));
94 const v128_t vf5 = wasm_v128_or(wasm_v16x8_shuffle(vzero, vsign2, 4, 12, 5, 13, 6, 14, 7, 15),
95 wasm_v128_bitselect(vnorm5, vdenorm5, vxmask5));
96
97 wasm_v128_store(output, vf0);
98 wasm_v128_store(output + 4, vf1);
99 wasm_v128_store(output + 8, vf2);
100 wasm_v128_store(output + 12, vf3);
101 wasm_v128_store(output + 16, vf4);
102 wasm_v128_store(output + 20, vf5);
103 output += 24;
104 }
105 for (; n >= 8 * sizeof(uint16_t); n -= 8 * sizeof(uint16_t)) {
106 const v128_t vh = wasm_v128_load(i);
107 i += 8;
108
109 const v128_t vsign = wasm_v128_and(vh, vsign_mask);
110
111 const v128_t vnonsign = wasm_v128_xor(vh, vsign);
112
113 const v128_t vprenorm_lo = wasm_i16x8_shl(vnonsign, 13);
114 const v128_t vprenorm_hi = wasm_i16x8_add(wasm_u16x8_shr(vnonsign, 3), vexp_offset);
115
116 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);
117 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);
118
119 const v128_t vdenorm_lo = wasm_f32x4_sub(wasm_v16x8_shuffle(vnonsign, vmagic_mask, 0, 8, 1, 9, 2, 10, 3, 11), vmagic_bias);
120 const v128_t vdenorm_hi = wasm_f32x4_sub(wasm_v16x8_shuffle(vnonsign, vmagic_mask, 4, 12, 5, 13, 6, 14, 7, 15), vmagic_bias);
121
122 const v128_t vmask = wasm_i16x8_gt(vnonsign, vdenorm_cutoff);
123 const v128_t vzero = wasm_i16x8_const_splat(0);
124
125 const v128_t vxmask_lo = wasm_i32x4_extend_low_i16x8(vmask);
126 const v128_t vf_lo = wasm_v128_or(wasm_v16x8_shuffle(vzero, vsign, 0, 8, 1, 9, 2, 10, 3, 11),
127 wasm_v128_bitselect(vnorm_lo, vdenorm_lo, vxmask_lo));
128
129 const v128_t vxmask_hi = wasm_i32x4_extend_high_i16x8(vmask);
130 const v128_t vf_hi = wasm_v128_or(wasm_v16x8_shuffle(vzero, vsign, 4, 12, 5, 13, 6, 14, 7, 15),
131 wasm_v128_bitselect(vnorm_hi, vdenorm_hi, vxmask_hi));
132
133 wasm_v128_store(output, vf_lo);
134 wasm_v128_store(output + 4, vf_hi);
135 output += 8;
136 }
137 if XNN_UNLIKELY(n != 0) {
138 assert(n >= 1 * sizeof(uint16_t));
139 assert(n <= 7 * sizeof(uint16_t));
140 const v128_t vh = wasm_v128_load(i);
141
142 const v128_t vsign = wasm_v128_and(vh, vsign_mask);
143
144 const v128_t vnonsign = wasm_v128_xor(vh, vsign);
145
146 const v128_t vprenorm_lo = wasm_i16x8_shl(vnonsign, 13);
147 const v128_t vprenorm_hi = wasm_i16x8_add(wasm_u16x8_shr(vnonsign, 3), vexp_offset);
148
149 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);
150 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);
151
152 const v128_t vdenorm_lo = wasm_f32x4_sub(wasm_v16x8_shuffle(vnonsign, vmagic_mask, 0, 8, 1, 9, 2, 10, 3, 11), vmagic_bias);
153 const v128_t vdenorm_hi = wasm_f32x4_sub(wasm_v16x8_shuffle(vnonsign, vmagic_mask, 4, 12, 5, 13, 6, 14, 7, 15), vmagic_bias);
154
155 const v128_t vmask = wasm_i16x8_gt(vnonsign, vdenorm_cutoff);
156 const v128_t vzero = wasm_i16x8_const_splat(0);
157
158 const v128_t vxmask_lo = wasm_i32x4_extend_low_i16x8(vmask);
159 v128_t vf = wasm_v128_or(wasm_v16x8_shuffle(vzero, vsign, 0, 8, 1, 9, 2, 10, 3, 11),
160 wasm_v128_bitselect(vnorm_lo, vdenorm_lo, vxmask_lo));
161
162 if (n & (4 * sizeof(uint16_t))) {
163 wasm_v128_store(output, vf);
164 output += 4;
165
166 const v128_t vxmask_hi = wasm_i32x4_extend_high_i16x8(vmask);
167 vf = wasm_v128_or(wasm_v16x8_shuffle(vzero, vsign, 4, 12, 5, 13, 6, 14, 7, 15),
168 wasm_v128_bitselect(vnorm_hi, vdenorm_hi, vxmask_hi));
169 }
170 if (n & (2 * sizeof(uint16_t))) {
171 *((double*) output) = wasm_f64x2_extract_lane(vf, 0);
172 output += 2;
173
174 vf = wasm_v64x2_shuffle(vf, vf, 1, 1);
175 }
176 if (n & (1 * sizeof(uint16_t))) {
177 *((float*) output) = wasm_f32x4_extract_lane(vf, 0);
178 }
179 }
180 }
181