1 // Auto-generated file. Do not edit!
2 // Template: src/f32-vsqrt/avx512f-nr1fma1adj.c.in
3 // Generator: tools/xngen
4 //
5 // Copyright 2020 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_f32_vsqrt_ukernel__avx512f_nr1fma1adj_x128(size_t n,const float * x,float * y,const union xnn_f32_sqrt_params params[restrict XNN_MIN_ELEMENTS (1)])19 void xnn_f32_vsqrt_ukernel__avx512f_nr1fma1adj_x128(
20 size_t n,
21 const float* x,
22 float* y,
23 const union xnn_f32_sqrt_params params[restrict XNN_MIN_ELEMENTS(1)])
24 {
25 assert(n != 0);
26 assert(n % sizeof(float) == 0);
27
28 const __m512 vhalf = _mm512_set1_ps(params->fma.half);
29 for (; n >= 128 * sizeof(float); n -= 128 * sizeof(float)) {
30 const __m512 vx0 = _mm512_loadu_ps(x);
31 const __m512 vx1 = _mm512_loadu_ps(x + 16);
32 const __m512 vx2 = _mm512_loadu_ps(x + 32);
33 const __m512 vx3 = _mm512_loadu_ps(x + 48);
34 const __m512 vx4 = _mm512_loadu_ps(x + 64);
35 const __m512 vx5 = _mm512_loadu_ps(x + 80);
36 const __m512 vx6 = _mm512_loadu_ps(x + 96);
37 const __m512 vx7 = _mm512_loadu_ps(x + 112);
38 x += 128;
39
40 const __m512 vrsqrtx0 = _mm512_rsqrt14_ps(vx0);
41 const __m512 vrsqrtx1 = _mm512_rsqrt14_ps(vx1);
42 const __m512 vrsqrtx2 = _mm512_rsqrt14_ps(vx2);
43 const __m512 vrsqrtx3 = _mm512_rsqrt14_ps(vx3);
44 const __m512 vrsqrtx4 = _mm512_rsqrt14_ps(vx4);
45 const __m512 vrsqrtx5 = _mm512_rsqrt14_ps(vx5);
46 const __m512 vrsqrtx6 = _mm512_rsqrt14_ps(vx6);
47 const __m512 vrsqrtx7 = _mm512_rsqrt14_ps(vx7);
48
49 __m512 vsqrtx0 = _mm512_mul_ps(vrsqrtx0, vx0);
50 __m512 vhalfrsqrtx0 = _mm512_mul_ps(vrsqrtx0, vhalf);
51 __m512 vsqrtx1 = _mm512_mul_ps(vrsqrtx1, vx1);
52 __m512 vhalfrsqrtx1 = _mm512_mul_ps(vrsqrtx1, vhalf);
53 __m512 vsqrtx2 = _mm512_mul_ps(vrsqrtx2, vx2);
54 __m512 vhalfrsqrtx2 = _mm512_mul_ps(vrsqrtx2, vhalf);
55 __m512 vsqrtx3 = _mm512_mul_ps(vrsqrtx3, vx3);
56 __m512 vhalfrsqrtx3 = _mm512_mul_ps(vrsqrtx3, vhalf);
57 __m512 vsqrtx4 = _mm512_mul_ps(vrsqrtx4, vx4);
58 __m512 vhalfrsqrtx4 = _mm512_mul_ps(vrsqrtx4, vhalf);
59 __m512 vsqrtx5 = _mm512_mul_ps(vrsqrtx5, vx5);
60 __m512 vhalfrsqrtx5 = _mm512_mul_ps(vrsqrtx5, vhalf);
61 __m512 vsqrtx6 = _mm512_mul_ps(vrsqrtx6, vx6);
62 __m512 vhalfrsqrtx6 = _mm512_mul_ps(vrsqrtx6, vhalf);
63 __m512 vsqrtx7 = _mm512_mul_ps(vrsqrtx7, vx7);
64 __m512 vhalfrsqrtx7 = _mm512_mul_ps(vrsqrtx7, vhalf);
65
66 const __m512 vresidual0 = _mm512_fnmadd_ps(vsqrtx0, vhalfrsqrtx0, vhalf);
67 const __m512 vresidual1 = _mm512_fnmadd_ps(vsqrtx1, vhalfrsqrtx1, vhalf);
68 const __m512 vresidual2 = _mm512_fnmadd_ps(vsqrtx2, vhalfrsqrtx2, vhalf);
69 const __m512 vresidual3 = _mm512_fnmadd_ps(vsqrtx3, vhalfrsqrtx3, vhalf);
70 const __m512 vresidual4 = _mm512_fnmadd_ps(vsqrtx4, vhalfrsqrtx4, vhalf);
71 const __m512 vresidual5 = _mm512_fnmadd_ps(vsqrtx5, vhalfrsqrtx5, vhalf);
72 const __m512 vresidual6 = _mm512_fnmadd_ps(vsqrtx6, vhalfrsqrtx6, vhalf);
73 const __m512 vresidual7 = _mm512_fnmadd_ps(vsqrtx7, vhalfrsqrtx7, vhalf);
74
75 vhalfrsqrtx0 = _mm512_fmadd_ps(vhalfrsqrtx0, vresidual0, vhalfrsqrtx0);
76 vsqrtx0 = _mm512_fmadd_ps(vsqrtx0, vresidual0, vsqrtx0);
77 vhalfrsqrtx1 = _mm512_fmadd_ps(vhalfrsqrtx1, vresidual1, vhalfrsqrtx1);
78 vsqrtx1 = _mm512_fmadd_ps(vsqrtx1, vresidual1, vsqrtx1);
79 vhalfrsqrtx2 = _mm512_fmadd_ps(vhalfrsqrtx2, vresidual2, vhalfrsqrtx2);
80 vsqrtx2 = _mm512_fmadd_ps(vsqrtx2, vresidual2, vsqrtx2);
81 vhalfrsqrtx3 = _mm512_fmadd_ps(vhalfrsqrtx3, vresidual3, vhalfrsqrtx3);
82 vsqrtx3 = _mm512_fmadd_ps(vsqrtx3, vresidual3, vsqrtx3);
83 vhalfrsqrtx4 = _mm512_fmadd_ps(vhalfrsqrtx4, vresidual4, vhalfrsqrtx4);
84 vsqrtx4 = _mm512_fmadd_ps(vsqrtx4, vresidual4, vsqrtx4);
85 vhalfrsqrtx5 = _mm512_fmadd_ps(vhalfrsqrtx5, vresidual5, vhalfrsqrtx5);
86 vsqrtx5 = _mm512_fmadd_ps(vsqrtx5, vresidual5, vsqrtx5);
87 vhalfrsqrtx6 = _mm512_fmadd_ps(vhalfrsqrtx6, vresidual6, vhalfrsqrtx6);
88 vsqrtx6 = _mm512_fmadd_ps(vsqrtx6, vresidual6, vsqrtx6);
89 vhalfrsqrtx7 = _mm512_fmadd_ps(vhalfrsqrtx7, vresidual7, vhalfrsqrtx7);
90 vsqrtx7 = _mm512_fmadd_ps(vsqrtx7, vresidual7, vsqrtx7);
91
92 const __m512 vadjustment0 = _mm512_fnmadd_ps(vsqrtx0, vsqrtx0, vx0);
93 const __m512 vadjustment1 = _mm512_fnmadd_ps(vsqrtx1, vsqrtx1, vx1);
94 const __m512 vadjustment2 = _mm512_fnmadd_ps(vsqrtx2, vsqrtx2, vx2);
95 const __m512 vadjustment3 = _mm512_fnmadd_ps(vsqrtx3, vsqrtx3, vx3);
96 const __m512 vadjustment4 = _mm512_fnmadd_ps(vsqrtx4, vsqrtx4, vx4);
97 const __m512 vadjustment5 = _mm512_fnmadd_ps(vsqrtx5, vsqrtx5, vx5);
98 const __m512 vadjustment6 = _mm512_fnmadd_ps(vsqrtx6, vsqrtx6, vx6);
99 const __m512 vadjustment7 = _mm512_fnmadd_ps(vsqrtx7, vsqrtx7, vx7);
100
101 const __m512 vy0 = _mm512_fmadd_ps(vhalfrsqrtx0, vadjustment0, vsqrtx0);
102 const __m512 vy1 = _mm512_fmadd_ps(vhalfrsqrtx1, vadjustment1, vsqrtx1);
103 const __m512 vy2 = _mm512_fmadd_ps(vhalfrsqrtx2, vadjustment2, vsqrtx2);
104 const __m512 vy3 = _mm512_fmadd_ps(vhalfrsqrtx3, vadjustment3, vsqrtx3);
105 const __m512 vy4 = _mm512_fmadd_ps(vhalfrsqrtx4, vadjustment4, vsqrtx4);
106 const __m512 vy5 = _mm512_fmadd_ps(vhalfrsqrtx5, vadjustment5, vsqrtx5);
107 const __m512 vy6 = _mm512_fmadd_ps(vhalfrsqrtx6, vadjustment6, vsqrtx6);
108 const __m512 vy7 = _mm512_fmadd_ps(vhalfrsqrtx7, vadjustment7, vsqrtx7);
109
110 _mm512_storeu_ps(y, vy0);
111 _mm512_storeu_ps(y + 16, vy1);
112 _mm512_storeu_ps(y + 32, vy2);
113 _mm512_storeu_ps(y + 48, vy3);
114 _mm512_storeu_ps(y + 64, vy4);
115 _mm512_storeu_ps(y + 80, vy5);
116 _mm512_storeu_ps(y + 96, vy6);
117 _mm512_storeu_ps(y + 112, vy7);
118 y += 128;
119 }
120 for (; n >= 16 * sizeof(float); n -= 16 * sizeof(float)) {
121 const __m512 vx = _mm512_loadu_ps(x);
122 x += 16;
123
124 const __m512 vrsqrtx = _mm512_rsqrt14_ps(vx);
125 __m512 vsqrtx = _mm512_mul_ps(vrsqrtx, vx);
126 __m512 vhalfrsqrtx = _mm512_mul_ps(vrsqrtx, vhalf);
127 const __m512 vresidual = _mm512_fnmadd_ps(vsqrtx, vhalfrsqrtx, vhalf);
128 vhalfrsqrtx = _mm512_fmadd_ps(vhalfrsqrtx, vresidual, vhalfrsqrtx);
129 vsqrtx = _mm512_fmadd_ps(vsqrtx, vresidual, vsqrtx);
130 const __m512 vadjustment = _mm512_fnmadd_ps(vsqrtx, vsqrtx, vx);
131 const __m512 vy = _mm512_fmadd_ps(vhalfrsqrtx, vadjustment, vsqrtx);
132
133 _mm512_storeu_ps(y, vy);
134 y += 16;
135 }
136 if XNN_UNLIKELY(n != 0) {
137 assert(n >= 1 * sizeof(float));
138 assert(n <= 15 * sizeof(float));
139 // Prepare mask for valid 32-bit elements (depends on n).
140 n >>= 2 /* log2(sizeof(float)) */;
141 const __mmask16 vmask = _cvtu32_mask16((uint16_t) ((uint32_t) (UINT32_C(1) << n) - UINT32_C(1)));
142
143 const __m512 vx = _mm512_maskz_loadu_ps(vmask, x);
144 const __m512 vrsqrtx = _mm512_rsqrt14_ps(vx);
145 __m512 vsqrtx = _mm512_mul_ps(vrsqrtx, vx);
146 __m512 vhalfrsqrtx = _mm512_mul_ps(vrsqrtx, vhalf);
147 const __m512 vresidual = _mm512_fnmadd_ps(vsqrtx, vhalfrsqrtx, vhalf);
148 vhalfrsqrtx = _mm512_fmadd_ps(vhalfrsqrtx, vresidual, vhalfrsqrtx);
149 vsqrtx = _mm512_fmadd_ps(vsqrtx, vresidual, vsqrtx);
150 const __m512 vadjustment = _mm512_fnmadd_ps(vsqrtx, vsqrtx, vx);
151 const __m512 vy = _mm512_fmadd_ps(vhalfrsqrtx, vadjustment, vsqrtx);
152
153 _mm512_mask_storeu_ps(y, vmask, vy);
154 }
155 }
156