1 // Auto-generated file. Do not edit!
2 // Template: src/f16-vsigmoid/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/vunary.h>
17
18
xnn_f16_vsigmoid_ukernel__avx2_rr1_p2_rcp_x16(size_t batch,const void * input,void * output,const union xnn_f16_sigmoid_params params[restrict XNN_MIN_ELEMENTS (1)])19 void xnn_f16_vsigmoid_ukernel__avx2_rr1_p2_rcp_x16(
20 size_t batch,
21 const void* input,
22 void* output,
23 const union xnn_f16_sigmoid_params params[restrict XNN_MIN_ELEMENTS(1)])
24 {
25 assert(batch % sizeof(uint16_t) == 0);
26
27 const __m256 vsign_mask = _mm256_load_ps(params->avx2_rr1_p2.sign_mask);
28 const __m256 vmagic_bias = _mm256_load_ps(params->avx2_rr1_p2.magic_bias);
29 const __m256 vlog2e = _mm256_load_ps(params->avx2_rr1_p2.log2e);
30 const __m256 vminus_ln2 = _mm256_load_ps(params->avx2_rr1_p2.minus_ln2);
31 const __m256 vc2 = _mm256_load_ps(params->avx2_rr1_p2.c2);
32 const __m256 vc1 = _mm256_load_ps(params->avx2_rr1_p2.c1);
33 const __m256 vone = _mm256_load_ps(params->avx2_rr1_p2.one);
34 const __m256 vdenorm_cutoff = _mm256_load_ps(params->avx2_rr1_p2.denorm_cutoff);
35
36 const uint16_t* i = (const uint16_t*) input;
37 uint16_t* o = (uint16_t*) output;
38 for (; batch >= 16 * sizeof(uint16_t); batch -= 16 * sizeof(uint16_t)) {
39 const __m256 vx0 = _mm256_cvtph_ps(_mm_loadu_si128((const __m128i*) i));
40 const __m256 vx1 = _mm256_cvtph_ps(_mm_loadu_si128((const __m128i*) (i + 8)));
41 i += 16;
42
43 const __m256 vz0 = _mm256_or_ps(vx0, vsign_mask);
44 const __m256 vz1 = _mm256_or_ps(vx1, vsign_mask);
45
46 __m256 vn0 = _mm256_fmadd_ps(vz0, vlog2e, vmagic_bias);
47 __m256 vn1 = _mm256_fmadd_ps(vz1, vlog2e, vmagic_bias);
48
49 const __m256 vs0 = _mm256_castsi256_ps(_mm256_slli_epi32(_mm256_castps_si256(vn0), 23));
50 const __m256 vs1 = _mm256_castsi256_ps(_mm256_slli_epi32(_mm256_castps_si256(vn1), 23));
51
52 vn0 = _mm256_sub_ps(vn0, vmagic_bias);
53 vn1 = _mm256_sub_ps(vn1, vmagic_bias);
54
55 __m256 vt0 = _mm256_fmadd_ps(vn0, vminus_ln2, vz0);
56 __m256 vt1 = _mm256_fmadd_ps(vn1, vminus_ln2, vz1);
57
58 const __m256 vp0 = _mm256_fmadd_ps(vc2, vt0, vc1);
59 const __m256 vp1 = _mm256_fmadd_ps(vc2, vt1, vc1);
60
61 vt0 = _mm256_mul_ps(vt0, vs0);
62 vt1 = _mm256_mul_ps(vt1, vs1);
63
64 const __m256 ve0 = _mm256_fmadd_ps(vt0, vp0, vs0);
65 const __m256 ve1 = _mm256_fmadd_ps(vt1, vp1, vs1);
66
67 const __m256 vd0 = _mm256_add_ps(ve0, vone);
68 const __m256 vd1 = _mm256_add_ps(ve1, vone);
69
70 const __m256 vr0 = _mm256_rcp_ps(vd0);
71 const __m256 vr1 = _mm256_rcp_ps(vd1);
72
73 __m256 vf0 = _mm256_mul_ps(ve0, vr0);
74 __m256 vf1 = _mm256_mul_ps(ve1, vr1);
75
76 vf0 = _mm256_andnot_ps(_mm256_cmp_ps(vz0, vdenorm_cutoff, _CMP_LT_OS), vf0);
77 vf1 = _mm256_andnot_ps(_mm256_cmp_ps(vz1, vdenorm_cutoff, _CMP_LT_OS), vf1);
78
79 vf0 = _mm256_blendv_ps(_mm256_sub_ps(vone, vf0), vf0, vx0);
80 vf1 = _mm256_blendv_ps(_mm256_sub_ps(vone, vf1), vf1, vx1);
81
82 _mm_storeu_si128((__m128i*) o, _mm256_cvtps_ph(vf0, _MM_FROUND_NO_EXC));
83 _mm_storeu_si128((__m128i*) (o + 8), _mm256_cvtps_ph(vf1, _MM_FROUND_NO_EXC));
84 o += 16;
85 }
86 for (; batch >= 8 * sizeof(uint16_t); batch -= 8 * sizeof(uint16_t)) {
87 const __m256 vx = _mm256_cvtph_ps(_mm_loadu_si128((const __m128i*) i));
88 i += 8;
89
90 const __m256 vz = _mm256_or_ps(vx, vsign_mask);
91
92 __m256 vn = _mm256_fmadd_ps(vz, vlog2e, vmagic_bias);
93 const __m256 vs = _mm256_castsi256_ps(_mm256_slli_epi32(_mm256_castps_si256(vn), 23));
94 vn = _mm256_sub_ps(vn, vmagic_bias);
95
96 __m256 vt = _mm256_fmadd_ps(vn, vminus_ln2, vz);
97
98 const __m256 vp = _mm256_fmadd_ps(vc2, vt, vc1);
99 vt = _mm256_mul_ps(vt, vs);
100 const __m256 ve = _mm256_fmadd_ps(vt, vp, vs);
101
102 const __m256 vd = _mm256_add_ps(ve, vone);
103 const __m256 vr = _mm256_rcp_ps(vd);
104 __m256 vf = _mm256_mul_ps(ve, vr);
105
106 vf = _mm256_andnot_ps(_mm256_cmp_ps(vz, vdenorm_cutoff, _CMP_LT_OS), vf);
107 vf = _mm256_blendv_ps(_mm256_sub_ps(vone, vf), vf, vx);
108
109 _mm_storeu_si128((__m128i*) o, _mm256_cvtps_ph(vf, _MM_FROUND_NO_EXC));
110 o += 8;
111 }
112 if XNN_UNLIKELY(batch != 0) {
113 assert(batch >= 1 * sizeof(uint16_t));
114 assert(batch <= 7 * sizeof(uint16_t));
115 const __m256 vx = _mm256_cvtph_ps(_mm_loadu_si128((const __m128i*) i));
116
117 const __m256 vz = _mm256_or_ps(vx, vsign_mask);
118
119 __m256 vn = _mm256_fmadd_ps(vz, vlog2e, vmagic_bias);
120 const __m256 vs = _mm256_castsi256_ps(_mm256_slli_epi32(_mm256_castps_si256(vn), 23));
121 vn = _mm256_sub_ps(vn, vmagic_bias);
122
123 __m256 vt = _mm256_fmadd_ps(vn, vminus_ln2, vz);
124
125 const __m256 vp = _mm256_fmadd_ps(vc2, vt, vc1);
126 vt = _mm256_mul_ps(vt, vs);
127 const __m256 ve = _mm256_fmadd_ps(vt, vp, vs);
128
129 const __m256 vd = _mm256_add_ps(ve, vone);
130 const __m256 vr = _mm256_rcp_ps(vd);
131 __m256 vf = _mm256_mul_ps(ve, vr);
132
133 vf = _mm256_andnot_ps(_mm256_cmp_ps(vz, vdenorm_cutoff, _CMP_LT_OS), vf);
134 vf = _mm256_blendv_ps(_mm256_sub_ps(vone, vf), vf, vx);
135
136 __m128i vh = _mm256_cvtps_ph(vf, _MM_FROUND_NO_EXC);
137 if (batch & (4 * sizeof(uint16_t))) {
138 _mm_storel_epi64((__m128i*) o, vh);
139 vh = _mm_unpackhi_epi64(vh, vh);
140 o += 4;
141 }
142 if (batch & (2 * sizeof(uint16_t))) {
143 _mm_storeu_si32(o, vh);
144 vh = _mm_srli_epi64(vh, 32);
145 o += 2;
146 }
147 if (batch & (1 * sizeof(uint16_t))) {
148 *o = (uint16_t) _mm_extract_epi16(vh, 0);
149 }
150 }
151 }
152