1 // Auto-generated file. Do not edit!
2 // Template: src/f32-f16-vcvt/f16c.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 <immintrin.h>
13
14 #include <xnnpack/common.h>
15 #include <xnnpack/intrinsics-polyfill.h>
16 #include <xnnpack/vcvt.h>
17
18
xnn_f32_f16_vcvt_ukernel__f16c_x8(size_t n,const float * input,void * output,const union xnn_f32_f16_cvt_params params[restrict XNN_MIN_ELEMENTS (1)])19 void xnn_f32_f16_vcvt_ukernel__f16c_x8(
20 size_t n,
21 const float* input,
22 void* output,
23 const union xnn_f32_f16_cvt_params params[restrict XNN_MIN_ELEMENTS(1)])
24 {
25 assert(n != 0);
26 assert(n % sizeof(float) == 0);
27 assert(input != NULL);
28 assert(output != NULL);
29
30 uint16_t* o = (uint16_t*) output;
31 for (; n >= 8 * sizeof(float); n -= 8 * sizeof(float)) {
32 const __m256 vf = _mm256_loadu_ps(input);
33 input += 8;
34
35 _mm_storeu_si128((__m128i*) o, _mm256_cvtps_ph(vf, _MM_FROUND_NO_EXC));
36 o += 8;
37 }
38 if XNN_UNLIKELY(n != 0) {
39 assert(n >= 1 * sizeof(float));
40 assert(n <= 7 * sizeof(float));
41 const __m256i vmask = _mm256_loadu_si256((const __m256i*) ((uintptr_t) ¶ms->f16c.mask_table[7] - n));
42
43 const __m256 vf = _mm256_maskload_ps(input, vmask);
44
45 __m128 vf_lo = _mm256_castps256_ps128(vf);
46 if (n & (4 * sizeof(float))) {
47 _mm_storel_epi64((__m128i*) o, _mm_cvtps_ph(vf_lo, _MM_FROUND_NO_EXC));
48 vf_lo = _mm256_extractf128_ps(vf, 1);
49 o += 4;
50 }
51 __m128i vh = _mm_cvtps_ph(vf_lo, _MM_FROUND_NO_EXC);
52 if (n & (2 * sizeof(float))) {
53 _mm_storeu_si32(o, vh);
54 vh = _mm_srli_epi64(vh, 32);
55 o += 2;
56 }
57 if (n & (1 * sizeof(float))) {
58 *((uint16_t*) o) = _mm_extract_epi16(vh, 0);
59 }
60 }
61 }
62