1 // Auto-generated file. Do not edit!
2 // Template: src/qs8-vlrelu/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/vlrelu.h>
17
18
xnn_qu8_vlrelu_ukernel__avx2_x16(size_t n,const uint8_t * x,uint8_t * y,const union xnn_qu8_lrelu_params params[restrict XNN_MIN_ELEMENTS (1)])19 void xnn_qu8_vlrelu_ukernel__avx2_x16(
20 size_t n,
21 const uint8_t* x,
22 uint8_t* y,
23 const union xnn_qu8_lrelu_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 vpositive_multiplier = _mm256_load_si256((const __m256i*) params->avx2.positive_multiplier);
32 const __m256i vnegative_multiplier = _mm256_load_si256((const __m256i*) params->avx2.negative_multiplier);
33 const __m256i voutput_zero_point = _mm256_load_si256((const __m256i*) params->avx2.output_zero_point);
34 for (; n >= 16 * sizeof(uint8_t); n -= 16 * sizeof(uint8_t)) {
35 __m256i vacc = _mm256_cvtepu8_epi16(_mm_loadu_si128((const __m128i*) x));
36 __m256i vmultiplier = _mm256_cmpgt_epi16(vacc, vinput_zero_point);
37 vacc = _mm256_sub_epi16(vinput_zero_point, vacc);
38 vmultiplier = _mm256_blendv_epi8(vnegative_multiplier, vpositive_multiplier, vmultiplier);
39 vacc = _mm256_slli_epi16(vacc, 7);
40 vacc = _mm256_mulhrs_epi16(vacc, vmultiplier);
41 vacc = _mm256_adds_epi16(vacc, voutput_zero_point);
42 x += 16;
43
44 const __m128i vacc_hi = _mm256_extracti128_si256(vacc, 1);
45 const __m128i vy = _mm_packus_epi16(_mm256_castsi256_si128(vacc), vacc_hi);
46 _mm_storeu_si128((__m128i*) y, vy);
47 y += 16;
48 }
49 if XNN_UNLIKELY(n != 0) {
50 assert(n >= 1 * sizeof(uint8_t));
51 assert(n <= 15 * sizeof(uint8_t));
52
53 __m256i vacc = _mm256_cvtepu8_epi16(_mm_loadu_si128((const __m128i*) x));
54 __m256i vmultiplier = _mm256_cmpgt_epi16(vacc, vinput_zero_point);
55 vacc = _mm256_sub_epi16(vinput_zero_point, vacc);
56 vmultiplier = _mm256_blendv_epi8(vnegative_multiplier, vpositive_multiplier, vmultiplier);
57 vacc = _mm256_slli_epi16(vacc, 7);
58 vacc = _mm256_mulhrs_epi16(vacc, vmultiplier);
59 vacc = _mm256_adds_epi16(vacc, voutput_zero_point);
60
61 const __m128i vacc_hi = _mm256_extracti128_si256(vacc, 1);
62 __m128i vy = _mm_packus_epi16(_mm256_castsi256_si128(vacc), vacc_hi);
63 if (n & (8 * sizeof(uint8_t))) {
64 _mm_storel_epi64((__m128i*) y, vy);
65 vy = _mm_unpackhi_epi64(vy, vy);
66 y += 8;
67 }
68 if (n & (4 * sizeof(uint8_t))) {
69 _mm_storeu_si32(y, vy);
70 vy = _mm_srli_epi64(vy, 32);
71 y += 4;
72 }
73 if (n & (2 * sizeof(uint8_t))) {
74 _mm_storeu_si16(y, vy);
75 vy = _mm_srli_epi32(vy, 16);
76 y += 2;
77 }
78 if (n & (1 * sizeof(uint8_t))) {
79 *y = (uint8_t) _mm_extract_epi8(vy, 0);
80 }
81 }
82 }
83