1 // Auto-generated file. Do not edit!
2 // Template: src/qs8-f32-vcvt/sse2.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 <emmintrin.h>
13
14 #include <xnnpack/common.h>
15 #include <xnnpack/intrinsics-polyfill.h>
16 #include <xnnpack/vcvt.h>
17
18
xnn_qs8_f32_vcvt_ukernel__sse2_x32(size_t n,const int8_t * x,float * y,const union xnn_qs8_f32_cvt_params params[restrict XNN_MIN_ELEMENTS (1)])19 void xnn_qs8_f32_vcvt_ukernel__sse2_x32(
20 size_t n,
21 const int8_t* x,
22 float* y,
23 const union xnn_qs8_f32_cvt_params params[restrict XNN_MIN_ELEMENTS(1)]) XNN_OOB_READS
24 {
25 assert(n != 0);
26 assert(n % sizeof(int8_t) == 0);
27 assert(x != NULL);
28 assert(y != NULL);
29
30 const __m128i vsign_mask = _mm_load_si128((const __m128i*) params->sse2.sign_mask);
31 const __m128i vmagic_exp = _mm_load_si128((const __m128i*) params->sse2.magic_exp);
32 const __m128 vmagic_bias = _mm_load_ps(params->sse2.magic_bias);
33 const __m128 vscale = _mm_load_ps(params->sse2.scale);
34 const __m128i vzero = _mm_setzero_si128();
35 for (; n >= 32 * sizeof(int8_t); n -= 32 * sizeof(int8_t)) {
36 __m128i vx01234567 = _mm_loadl_epi64((const __m128i*) x);
37 __m128i vx89ABCDEF = _mm_loadl_epi64((const __m128i*) (x + 8));
38 __m128i vxGHIJKLMN = _mm_loadl_epi64((const __m128i*) (x + 16));
39 __m128i vxOPQRSTUV = _mm_loadl_epi64((const __m128i*) (x + 24));
40 x += 32;
41
42 vx01234567 = _mm_xor_si128(vx01234567, vsign_mask);
43 vx89ABCDEF = _mm_xor_si128(vx89ABCDEF, vsign_mask);
44 vxGHIJKLMN = _mm_xor_si128(vxGHIJKLMN, vsign_mask);
45 vxOPQRSTUV = _mm_xor_si128(vxOPQRSTUV, vsign_mask);
46
47 vx01234567 = _mm_unpacklo_epi8(vx01234567, vzero);
48 vx89ABCDEF = _mm_unpacklo_epi8(vx89ABCDEF, vzero);
49 vxGHIJKLMN = _mm_unpacklo_epi8(vxGHIJKLMN, vzero);
50 vxOPQRSTUV = _mm_unpacklo_epi8(vxOPQRSTUV, vzero);
51
52 __m128 vy0123 = _mm_castsi128_ps(_mm_unpacklo_epi16(vx01234567, vmagic_exp));
53 __m128 vy4567 = _mm_castsi128_ps(_mm_unpackhi_epi16(vx01234567, vmagic_exp));
54 __m128 vy89AB = _mm_castsi128_ps(_mm_unpacklo_epi16(vx89ABCDEF, vmagic_exp));
55 __m128 vyCDEF = _mm_castsi128_ps(_mm_unpackhi_epi16(vx89ABCDEF, vmagic_exp));
56 __m128 vyGHIJ = _mm_castsi128_ps(_mm_unpacklo_epi16(vxGHIJKLMN, vmagic_exp));
57 __m128 vyKLMN = _mm_castsi128_ps(_mm_unpackhi_epi16(vxGHIJKLMN, vmagic_exp));
58 __m128 vyOPQR = _mm_castsi128_ps(_mm_unpacklo_epi16(vxOPQRSTUV, vmagic_exp));
59 __m128 vySTUV = _mm_castsi128_ps(_mm_unpackhi_epi16(vxOPQRSTUV, vmagic_exp));
60
61 vy0123 = _mm_sub_ps(vy0123, vmagic_bias);
62 vy4567 = _mm_sub_ps(vy4567, vmagic_bias);
63 vy89AB = _mm_sub_ps(vy89AB, vmagic_bias);
64 vyCDEF = _mm_sub_ps(vyCDEF, vmagic_bias);
65 vyGHIJ = _mm_sub_ps(vyGHIJ, vmagic_bias);
66 vyKLMN = _mm_sub_ps(vyKLMN, vmagic_bias);
67 vyOPQR = _mm_sub_ps(vyOPQR, vmagic_bias);
68 vySTUV = _mm_sub_ps(vySTUV, vmagic_bias);
69
70 vy0123 = _mm_mul_ps(vy0123, vscale);
71 vy4567 = _mm_mul_ps(vy4567, vscale);
72 vy89AB = _mm_mul_ps(vy89AB, vscale);
73 vyCDEF = _mm_mul_ps(vyCDEF, vscale);
74 vyGHIJ = _mm_mul_ps(vyGHIJ, vscale);
75 vyKLMN = _mm_mul_ps(vyKLMN, vscale);
76 vyOPQR = _mm_mul_ps(vyOPQR, vscale);
77 vySTUV = _mm_mul_ps(vySTUV, vscale);
78
79 _mm_storeu_ps(y, vy0123);
80 _mm_storeu_ps(y + 4, vy4567);
81 _mm_storeu_ps(y + 8, vy89AB);
82 _mm_storeu_ps(y + 12, vyCDEF);
83 _mm_storeu_ps(y + 16, vyGHIJ);
84 _mm_storeu_ps(y + 20, vyKLMN);
85 _mm_storeu_ps(y + 24, vyOPQR);
86 _mm_storeu_ps(y + 28, vySTUV);
87 y += 32;
88 }
89 for (; n >= 8 * sizeof(int8_t); n -= 8 * sizeof(int8_t)) {
90 __m128i vx = _mm_loadl_epi64((const __m128i*) x);
91 vx = _mm_xor_si128(vx, vsign_mask);
92 vx = _mm_unpacklo_epi8(vx, vzero);
93 x += 8;
94
95 __m128 vy_lo = _mm_castsi128_ps(_mm_unpacklo_epi16(vx, vmagic_exp));
96 __m128 vy_hi = _mm_castsi128_ps(_mm_unpackhi_epi16(vx, vmagic_exp));
97
98 vy_lo = _mm_sub_ps(vy_lo, vmagic_bias);
99 vy_hi = _mm_sub_ps(vy_hi, vmagic_bias);
100
101 vy_lo = _mm_mul_ps(vy_lo, vscale);
102 vy_hi = _mm_mul_ps(vy_hi, vscale);
103
104 _mm_storeu_ps(y, vy_lo);
105 _mm_storeu_ps(y + 4, vy_hi);
106 y += 8;
107 }
108 if XNN_UNLIKELY(n != 0) {
109 assert(n >= 1 * sizeof(int8_t));
110 assert(n <= 7 * sizeof(int8_t));
111
112 __m128i vx = _mm_loadl_epi64((const __m128i*) x);
113 vx = _mm_xor_si128(vx, vsign_mask);
114 vx = _mm_unpacklo_epi8(vx, vzero);
115
116 __m128 vy = _mm_castsi128_ps(_mm_unpacklo_epi16(vx, vmagic_exp));
117 vy = _mm_sub_ps(vy, vmagic_bias);
118 vy = _mm_mul_ps(vy, vscale);
119
120 if (n & (4 * sizeof(int8_t))) {
121 _mm_storeu_ps(y, vy);
122 vy = _mm_castsi128_ps(_mm_unpackhi_epi16(vx, vmagic_exp));
123 vy = _mm_sub_ps(vy, vmagic_bias);
124 vy = _mm_mul_ps(vy, vscale);
125 y += 4;
126 }
127 if (n & (2 * sizeof(int8_t))) {
128 _mm_storel_pi((__m64*) y, vy);
129 vy = _mm_movehl_ps(vy, vy);
130 y += 2;
131 }
132 if (n & (1 * sizeof(int8_t))) {
133 _mm_store_ss(y, vy);
134 }
135 }
136 }
137