1 /*
2 * Copyright (c) Facebook, Inc. and its affiliates.
3 * All rights reserved.
4 *
5 * This source code is licensed under the BSD-style license found in the
6 * LICENSE file in the root directory of this source tree.
7 */
8
9 #include <assert.h>
10
11 #include <emmintrin.h>
12
13 #include <qnnpack/u8maxpool.h>
14
pytorch_u8maxpool_ukernel_sub16__sse2(size_t n,size_t ks,size_t kc,const uint8_t ** input,uint8_t * output,size_t input_increment,size_t output_increment,const union pytorch_qnnp_u8_clamping_params params[RESTRICT_STATIC1])15 void pytorch_u8maxpool_ukernel_sub16__sse2(
16 size_t n,
17 size_t ks,
18 size_t kc,
19 const uint8_t** input,
20 uint8_t* output,
21 size_t input_increment,
22 size_t output_increment,
23 const union pytorch_qnnp_u8_clamping_params params[RESTRICT_STATIC 1]) {
24 assert(n != 0);
25 assert(ks != 0);
26 assert(kc != 0);
27 assert(kc < 16);
28
29 const __m128i voutput_max =
30 _mm_load_si128((const __m128i*)params->sse2.output_max);
31 const __m128i voutput_min =
32 _mm_load_si128((const __m128i*)params->sse2.output_min);
33
34 do {
35 __m128i vmax = _mm_setzero_si128();
36
37 size_t m = ks;
38 do {
39 const uint8_t* i = *input++;
40 i += kc;
41 __m128i vi = vmax;
42 if (kc & 1) {
43 i -= 1;
44 vi = _mm_cvtsi32_si128(*i);
45 }
46 if (kc & 2) {
47 vi = _mm_slli_epi32(vi, 16);
48 i -= 2;
49 vi = _mm_insert_epi16(vi, *((const uint16_t*)i), 0);
50 }
51 if (kc & 4) {
52 i -= 4;
53 vi = _mm_unpacklo_epi32(
54 _mm_cvtsi32_si128((int)*((const uint32_t*)i)), vi);
55 }
56 if (kc & 8) {
57 i -= 8;
58 vi = _mm_unpacklo_epi64(_mm_loadl_epi64((const __m128i*)i), vi);
59 }
60 vmax = _mm_max_epu8(vmax, vi);
61 } while (--m != 0);
62 input = (const uint8_t**)((uintptr_t)input + input_increment);
63 __m128i vout = _mm_max_epu8(_mm_min_epu8(vmax, voutput_max), voutput_min);
64
65 if (kc & 8) {
66 _mm_storel_epi64((__m128i*)output, vout);
67 output += 8;
68 vout = _mm_unpackhi_epi64(vout, vout);
69 }
70 if (kc & 4) {
71 *((uint32_t*)output) = (uint32_t)_mm_cvtsi128_si32(vout);
72 output += 4;
73 vout = _mm_srli_epi64(vout, 32);
74 }
75 if (kc & 2) {
76 *((uint16_t*)output) = (uint16_t)_mm_extract_epi16(vout, 0);
77 output += 2;
78 vout = _mm_srli_epi32(vout, 16);
79 }
80 if (kc & 1) {
81 *((uint8_t*)output) = (uint8_t)_mm_cvtsi128_si32(vout);
82 output += 1;
83 }
84 output = (uint8_t*)((uintptr_t)output + output_increment);
85 } while (--n != 0);
86 }
87