1 // Auto-generated file. Do not edit!
2 // Template: src/f32-qs8-vcvt/sse.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/vcvt.h>
16
17
xnn_f32_qs8_vcvt_ukernel__sse2_x16(size_t n,const float * x,int8_t * y,const union xnn_f32_qs8_cvt_params params[restrict XNN_MIN_ELEMENTS (1)])18 void xnn_f32_qs8_vcvt_ukernel__sse2_x16(
19 size_t n,
20 const float* x,
21 int8_t* y,
22 const union xnn_f32_qs8_cvt_params params[restrict XNN_MIN_ELEMENTS(1)]) XNN_OOB_READS
23 {
24 assert(n != 0);
25 assert(n % sizeof(float) == 0);
26 assert(x != NULL);
27 assert(y != NULL);
28
29 const __m128 vscale = _mm_load_ps(params->sse2.scale);
30 const __m128 voutput_max_less_zero_point = _mm_load_ps(params->sse2.output_max_less_zero_point);
31 const __m128i voutput_zero_point = _mm_load_si128((const __m128i*) params->sse2.output_zero_point);
32 const __m128i voutput_min = _mm_load_si128((const __m128i*) params->sse2.output_min);
33
34 for (; n >= 16 * sizeof(float); n -= 16 * sizeof(float)) {
35 __m128 vx0123 = _mm_loadu_ps(x);
36 __m128 vx4567 = _mm_loadu_ps(x + 4);
37 __m128 vx89AB = _mm_loadu_ps(x + 8);
38 __m128 vxCDEF = _mm_loadu_ps(x + 12);
39 x += 16;
40
41 vx0123 = _mm_mul_ps(vx0123, vscale);
42 vx4567 = _mm_mul_ps(vx4567, vscale);
43 vx89AB = _mm_mul_ps(vx89AB, vscale);
44 vxCDEF = _mm_mul_ps(vxCDEF, vscale);
45
46 vx0123 = _mm_min_ps(vx0123, voutput_max_less_zero_point);
47 vx4567 = _mm_min_ps(vx4567, voutput_max_less_zero_point);
48 vx89AB = _mm_min_ps(vx89AB, voutput_max_less_zero_point);
49 vxCDEF = _mm_min_ps(vxCDEF, voutput_max_less_zero_point);
50
51 const __m128i vy0123 = _mm_cvtps_epi32(vx0123);
52 const __m128i vy4567 = _mm_cvtps_epi32(vx4567);
53 const __m128i vy89AB = _mm_cvtps_epi32(vx89AB);
54 const __m128i vyCDEF = _mm_cvtps_epi32(vxCDEF);
55
56 __m128i vy01234567 = _mm_packs_epi32(vy0123, vy4567);
57 __m128i vy89ABCDEF = _mm_packs_epi32(vy89AB, vyCDEF);
58
59 vy01234567 = _mm_adds_epi16(vy01234567, voutput_zero_point);
60 vy89ABCDEF = _mm_adds_epi16(vy89ABCDEF, voutput_zero_point);
61
62 vy01234567 = _mm_max_epi16(vy01234567, voutput_min);
63 vy89ABCDEF = _mm_max_epi16(vy89ABCDEF, voutput_min);
64
65 __m128i vy0123456789ABCDEF = _mm_packs_epi16(vy01234567, vy89ABCDEF);
66
67
68 _mm_storeu_si128((__m128i*) y, vy0123456789ABCDEF);
69 y += 16;
70 }
71 for (; n >= 8 * sizeof(float); n -= 8 * sizeof(float)) {
72 __m128 vx_lo = _mm_loadu_ps(x);
73 __m128 vx_hi = _mm_loadu_ps(x + 4);
74 x += 8;
75
76 vx_lo = _mm_mul_ps(vx_lo, vscale);
77 vx_hi = _mm_mul_ps(vx_hi, vscale);
78
79 vx_lo = _mm_min_ps(vx_lo, voutput_max_less_zero_point);
80 vx_hi = _mm_min_ps(vx_hi, voutput_max_less_zero_point);
81
82 const __m128i vy_lo = _mm_cvtps_epi32(vx_lo);
83 const __m128i vy_hi = _mm_cvtps_epi32(vx_hi);
84
85 __m128i vy = _mm_packs_epi32(vy_lo, vy_hi);
86 vy = _mm_adds_epi16(vy, voutput_zero_point);
87 vy = _mm_max_epi16(vy, voutput_min);
88 vy = _mm_packs_epi16(vy, vy);
89
90 _mm_storel_epi64((__m128i*) y, vy);
91 y += 8;
92 }
93 if XNN_UNLIKELY(n != 0) {
94 __m128 vx_lo = _mm_loadu_ps(x);
95 const float* x_hi = (const float*) ((uintptr_t) x + (n & (4 * sizeof(float))));
96 __m128 vx_hi = _mm_loadu_ps(x_hi);
97
98 vx_lo = _mm_mul_ps(vx_lo, vscale);
99 vx_hi = _mm_mul_ps(vx_hi, vscale);
100
101 vx_lo = _mm_min_ps(vx_lo, voutput_max_less_zero_point);
102 vx_hi = _mm_min_ps(vx_hi, voutput_max_less_zero_point);
103
104 const __m128i vy_lo = _mm_cvtps_epi32(vx_lo);
105 const __m128i vy_hi = _mm_cvtps_epi32(vx_hi);
106
107 __m128i vy = _mm_packs_epi32(vy_lo, vy_hi);
108 vy = _mm_adds_epi16(vy, voutput_zero_point);
109 vy = _mm_max_epi16(vy, voutput_min);
110 vy = _mm_packs_epi16(vy, vy);
111
112 if (n & (4 * sizeof(float))) {
113 *((uint32_t*) y) = (uint32_t) _mm_cvtsi128_si32(vy);
114 y += 4;
115 vy = _mm_srli_epi64(vy, 32);
116 }
117 {
118 uint32_t vy_lo = (uint32_t) _mm_cvtsi128_si32(vy);
119 if (n & (2 * sizeof(float))) {
120 *((uint16_t*) y) = (uint16_t) vy_lo;
121 y += 2;
122 vy_lo >>= 16;
123 }
124 if (n & (1 * sizeof(float))) {
125 *y = (int8_t) vy_lo;
126 }
127 }
128 }
129 }
130