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_x96(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_x96(
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 >= 96 * sizeof(float); n -= 96 * 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 x += 96;
37
38 const __m512 vrsqrtx0 = _mm512_rsqrt14_ps(vx0);
39 const __m512 vrsqrtx1 = _mm512_rsqrt14_ps(vx1);
40 const __m512 vrsqrtx2 = _mm512_rsqrt14_ps(vx2);
41 const __m512 vrsqrtx3 = _mm512_rsqrt14_ps(vx3);
42 const __m512 vrsqrtx4 = _mm512_rsqrt14_ps(vx4);
43 const __m512 vrsqrtx5 = _mm512_rsqrt14_ps(vx5);
44
45 __m512 vsqrtx0 = _mm512_mul_ps(vrsqrtx0, vx0);
46 __m512 vhalfrsqrtx0 = _mm512_mul_ps(vrsqrtx0, vhalf);
47 __m512 vsqrtx1 = _mm512_mul_ps(vrsqrtx1, vx1);
48 __m512 vhalfrsqrtx1 = _mm512_mul_ps(vrsqrtx1, vhalf);
49 __m512 vsqrtx2 = _mm512_mul_ps(vrsqrtx2, vx2);
50 __m512 vhalfrsqrtx2 = _mm512_mul_ps(vrsqrtx2, vhalf);
51 __m512 vsqrtx3 = _mm512_mul_ps(vrsqrtx3, vx3);
52 __m512 vhalfrsqrtx3 = _mm512_mul_ps(vrsqrtx3, vhalf);
53 __m512 vsqrtx4 = _mm512_mul_ps(vrsqrtx4, vx4);
54 __m512 vhalfrsqrtx4 = _mm512_mul_ps(vrsqrtx4, vhalf);
55 __m512 vsqrtx5 = _mm512_mul_ps(vrsqrtx5, vx5);
56 __m512 vhalfrsqrtx5 = _mm512_mul_ps(vrsqrtx5, vhalf);
57
58 const __m512 vresidual0 = _mm512_fnmadd_ps(vsqrtx0, vhalfrsqrtx0, vhalf);
59 const __m512 vresidual1 = _mm512_fnmadd_ps(vsqrtx1, vhalfrsqrtx1, vhalf);
60 const __m512 vresidual2 = _mm512_fnmadd_ps(vsqrtx2, vhalfrsqrtx2, vhalf);
61 const __m512 vresidual3 = _mm512_fnmadd_ps(vsqrtx3, vhalfrsqrtx3, vhalf);
62 const __m512 vresidual4 = _mm512_fnmadd_ps(vsqrtx4, vhalfrsqrtx4, vhalf);
63 const __m512 vresidual5 = _mm512_fnmadd_ps(vsqrtx5, vhalfrsqrtx5, vhalf);
64
65 vhalfrsqrtx0 = _mm512_fmadd_ps(vhalfrsqrtx0, vresidual0, vhalfrsqrtx0);
66 vsqrtx0 = _mm512_fmadd_ps(vsqrtx0, vresidual0, vsqrtx0);
67 vhalfrsqrtx1 = _mm512_fmadd_ps(vhalfrsqrtx1, vresidual1, vhalfrsqrtx1);
68 vsqrtx1 = _mm512_fmadd_ps(vsqrtx1, vresidual1, vsqrtx1);
69 vhalfrsqrtx2 = _mm512_fmadd_ps(vhalfrsqrtx2, vresidual2, vhalfrsqrtx2);
70 vsqrtx2 = _mm512_fmadd_ps(vsqrtx2, vresidual2, vsqrtx2);
71 vhalfrsqrtx3 = _mm512_fmadd_ps(vhalfrsqrtx3, vresidual3, vhalfrsqrtx3);
72 vsqrtx3 = _mm512_fmadd_ps(vsqrtx3, vresidual3, vsqrtx3);
73 vhalfrsqrtx4 = _mm512_fmadd_ps(vhalfrsqrtx4, vresidual4, vhalfrsqrtx4);
74 vsqrtx4 = _mm512_fmadd_ps(vsqrtx4, vresidual4, vsqrtx4);
75 vhalfrsqrtx5 = _mm512_fmadd_ps(vhalfrsqrtx5, vresidual5, vhalfrsqrtx5);
76 vsqrtx5 = _mm512_fmadd_ps(vsqrtx5, vresidual5, vsqrtx5);
77
78 const __m512 vadjustment0 = _mm512_fnmadd_ps(vsqrtx0, vsqrtx0, vx0);
79 const __m512 vadjustment1 = _mm512_fnmadd_ps(vsqrtx1, vsqrtx1, vx1);
80 const __m512 vadjustment2 = _mm512_fnmadd_ps(vsqrtx2, vsqrtx2, vx2);
81 const __m512 vadjustment3 = _mm512_fnmadd_ps(vsqrtx3, vsqrtx3, vx3);
82 const __m512 vadjustment4 = _mm512_fnmadd_ps(vsqrtx4, vsqrtx4, vx4);
83 const __m512 vadjustment5 = _mm512_fnmadd_ps(vsqrtx5, vsqrtx5, vx5);
84
85 const __m512 vy0 = _mm512_fmadd_ps(vhalfrsqrtx0, vadjustment0, vsqrtx0);
86 const __m512 vy1 = _mm512_fmadd_ps(vhalfrsqrtx1, vadjustment1, vsqrtx1);
87 const __m512 vy2 = _mm512_fmadd_ps(vhalfrsqrtx2, vadjustment2, vsqrtx2);
88 const __m512 vy3 = _mm512_fmadd_ps(vhalfrsqrtx3, vadjustment3, vsqrtx3);
89 const __m512 vy4 = _mm512_fmadd_ps(vhalfrsqrtx4, vadjustment4, vsqrtx4);
90 const __m512 vy5 = _mm512_fmadd_ps(vhalfrsqrtx5, vadjustment5, vsqrtx5);
91
92 _mm512_storeu_ps(y, vy0);
93 _mm512_storeu_ps(y + 16, vy1);
94 _mm512_storeu_ps(y + 32, vy2);
95 _mm512_storeu_ps(y + 48, vy3);
96 _mm512_storeu_ps(y + 64, vy4);
97 _mm512_storeu_ps(y + 80, vy5);
98 y += 96;
99 }
100 for (; n >= 16 * sizeof(float); n -= 16 * sizeof(float)) {
101 const __m512 vx = _mm512_loadu_ps(x);
102 x += 16;
103
104 const __m512 vrsqrtx = _mm512_rsqrt14_ps(vx);
105 __m512 vsqrtx = _mm512_mul_ps(vrsqrtx, vx);
106 __m512 vhalfrsqrtx = _mm512_mul_ps(vrsqrtx, vhalf);
107 const __m512 vresidual = _mm512_fnmadd_ps(vsqrtx, vhalfrsqrtx, vhalf);
108 vhalfrsqrtx = _mm512_fmadd_ps(vhalfrsqrtx, vresidual, vhalfrsqrtx);
109 vsqrtx = _mm512_fmadd_ps(vsqrtx, vresidual, vsqrtx);
110 const __m512 vadjustment = _mm512_fnmadd_ps(vsqrtx, vsqrtx, vx);
111 const __m512 vy = _mm512_fmadd_ps(vhalfrsqrtx, vadjustment, vsqrtx);
112
113 _mm512_storeu_ps(y, vy);
114 y += 16;
115 }
116 if XNN_UNLIKELY(n != 0) {
117 assert(n >= 1 * sizeof(float));
118 assert(n <= 15 * sizeof(float));
119 // Prepare mask for valid 32-bit elements (depends on n).
120 n >>= 2 /* log2(sizeof(float)) */;
121 const __mmask16 vmask = _cvtu32_mask16((uint16_t) ((uint32_t) (UINT32_C(1) << n) - UINT32_C(1)));
122
123 const __m512 vx = _mm512_maskz_loadu_ps(vmask, x);
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_mask_storeu_ps(y, vmask, vy);
134 }
135 }
136