1 // Auto-generated file. Do not edit!
2 // Template: src/qs8-vcvt/avx2.c.in
3 // Generator: tools/xngen
4 //
5 // Copyright 2022 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 <immintrin.h>
13
14 #include <xnnpack/common.h>
15 #include <xnnpack/intrinsics-polyfill.h>
16 #include <xnnpack/vcvt.h>
17
18
xnn_qu8_vcvt_ukernel__avx2_x64(size_t n,const uint8_t * x,uint8_t * y,const union xnn_qu8_cvt_params params[restrict XNN_MIN_ELEMENTS (1)])19 void xnn_qu8_vcvt_ukernel__avx2_x64(
20 size_t n,
21 const uint8_t* x,
22 uint8_t* y,
23 const union xnn_qu8_cvt_params params[restrict XNN_MIN_ELEMENTS(1)]) XNN_OOB_READS
24 {
25 assert(n != 0);
26 assert(n % sizeof(uint8_t) == 0);
27 assert(x != NULL);
28 assert(y != NULL);
29
30 const __m256i vinput_zero_point = _mm256_load_si256((const __m256i*) params->avx2.input_zero_point);
31 const __m256i vmultiplier = _mm256_load_si256((const __m256i*) params->avx2.multiplier);
32 const __m256i voutput_zero_point = _mm256_load_si256((const __m256i*) params->avx2.output_zero_point);
33 for (; n >= 64 * sizeof(uint8_t); n -= 64 * sizeof(uint8_t)) {
34 __m256i vacc0 = _mm256_cvtepu8_epi16(_mm_loadu_si128((const __m128i*) x));
35 __m256i vacc1 = _mm256_cvtepu8_epi16(_mm_loadu_si128((const __m128i*) (x + 16)));
36 __m256i vacc2 = _mm256_cvtepu8_epi16(_mm_loadu_si128((const __m128i*) (x + 32)));
37 __m256i vacc3 = _mm256_cvtepu8_epi16(_mm_loadu_si128((const __m128i*) (x + 48)));
38 x += 64;
39
40 vacc0 = _mm256_sub_epi16(vinput_zero_point, vacc0);
41 vacc1 = _mm256_sub_epi16(vinput_zero_point, vacc1);
42 vacc2 = _mm256_sub_epi16(vinput_zero_point, vacc2);
43 vacc3 = _mm256_sub_epi16(vinput_zero_point, vacc3);
44
45 vacc0 = _mm256_slli_epi16(vacc0, 7);
46 vacc1 = _mm256_slli_epi16(vacc1, 7);
47 vacc2 = _mm256_slli_epi16(vacc2, 7);
48 vacc3 = _mm256_slli_epi16(vacc3, 7);
49
50 vacc0 = _mm256_mulhrs_epi16(vacc0, vmultiplier);
51 vacc1 = _mm256_mulhrs_epi16(vacc1, vmultiplier);
52 vacc2 = _mm256_mulhrs_epi16(vacc2, vmultiplier);
53 vacc3 = _mm256_mulhrs_epi16(vacc3, vmultiplier);
54
55 vacc0 = _mm256_adds_epi16(vacc0, voutput_zero_point);
56 vacc1 = _mm256_adds_epi16(vacc1, voutput_zero_point);
57 vacc2 = _mm256_adds_epi16(vacc2, voutput_zero_point);
58 vacc3 = _mm256_adds_epi16(vacc3, voutput_zero_point);
59
60 __m256i vy0 = _mm256_packus_epi16(vacc0, vacc1);
61 __m256i vy1 = _mm256_packus_epi16(vacc2, vacc3);
62
63 vy0 = _mm256_permute4x64_epi64(vy0, _MM_SHUFFLE(3, 1, 2, 0));
64 vy1 = _mm256_permute4x64_epi64(vy1, _MM_SHUFFLE(3, 1, 2, 0));
65
66 _mm256_storeu_si256((__m256i*) y, vy0);
67 _mm256_storeu_si256((__m256i*) (y + 32), vy1);
68 y += 64;
69 }
70 for (; n >= 16 * sizeof(uint8_t); n -= 16 * sizeof(uint8_t)) {
71 __m256i vacc = _mm256_cvtepu8_epi16(_mm_loadu_si128((const __m128i*) x));
72 vacc = _mm256_sub_epi16(vinput_zero_point, vacc);
73 vacc = _mm256_slli_epi16(vacc, 7);
74 vacc = _mm256_mulhrs_epi16(vacc, vmultiplier);
75 vacc = _mm256_adds_epi16(vacc, voutput_zero_point);
76 x += 16;
77
78 const __m128i vacc_hi = _mm256_extracti128_si256(vacc, 1);
79 const __m128i vy = _mm_packus_epi16(_mm256_castsi256_si128(vacc), vacc_hi);
80 _mm_storeu_si128((__m128i*) y, vy);
81 y += 16;
82 }
83 if XNN_UNLIKELY(n != 0) {
84 assert(n >= 1 * sizeof(uint8_t));
85 assert(n <= 15 * sizeof(uint8_t));
86
87 __m256i vacc = _mm256_cvtepu8_epi16(_mm_loadu_si128((const __m128i*) x));
88 vacc = _mm256_sub_epi16(vinput_zero_point, vacc);
89 vacc = _mm256_slli_epi16(vacc, 7);
90 vacc = _mm256_mulhrs_epi16(vacc, vmultiplier);
91 vacc = _mm256_adds_epi16(vacc, voutput_zero_point);
92
93 const __m128i vacc_hi = _mm256_extracti128_si256(vacc, 1);
94 __m128i vy = _mm_packus_epi16(_mm256_castsi256_si128(vacc), vacc_hi);
95 if (n & (8 * sizeof(uint8_t))) {
96 _mm_storel_epi64((__m128i*) y, vy);
97 vy = _mm_unpackhi_epi64(vy, vy);
98 y += 8;
99 }
100 if (n & (4 * sizeof(uint8_t))) {
101 _mm_storeu_si32(y, vy);
102 vy = _mm_srli_epi64(vy, 32);
103 y += 4;
104 }
105 if (n & (2 * sizeof(uint8_t))) {
106 _mm_storeu_si16(y, vy);
107 vy = _mm_srli_epi32(vy, 16);
108 y += 2;
109 }
110 if (n & (1 * sizeof(uint8_t))) {
111 *y = (uint8_t) _mm_extract_epi8(vy, 0);
112 }
113 }
114 }
115