1 // Auto-generated file. Do not edit!
2 // Template: src/f32-vsqrt/neonfma-nr2fma1adj.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 #include <math.h>
12
13 #include <arm_neon.h>
14
15 #include <xnnpack/common.h>
16 #include <xnnpack/vunary.h>
17
18
xnn_f32_vsqrt_ukernel__neonfma_nr2fma1adj_x28(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__neonfma_nr2fma1adj_x28(
20 size_t n,
21 const float* x,
22 float* y,
23 const union xnn_f32_sqrt_params params[restrict XNN_MIN_ELEMENTS(1)]) XNN_DISABLE_TSAN
24 {
25 assert(n != 0);
26 assert(n % sizeof(float) == 0);
27
28 const float32x4_t vhalf = vmovq_n_f32(0.5f);
29 for (; n >= 28 * sizeof(float); n -= 28 * sizeof(float)) {
30 const float32x4_t vx0123 = vld1q_f32(x); x += 4;
31 const float32x4_t vx4567 = vld1q_f32(x); x += 4;
32 const float32x4_t vx89AB = vld1q_f32(x); x += 4;
33 const float32x4_t vxCDEF = vld1q_f32(x); x += 4;
34 const float32x4_t vxGHIJ = vld1q_f32(x); x += 4;
35 const float32x4_t vxKLMN = vld1q_f32(x); x += 4;
36 const float32x4_t vxOPQR = vld1q_f32(x); x += 4;
37
38 const float32x4_t vrsqrtx0123 = vrsqrteq_f32(vx0123);
39 const float32x4_t vrsqrtx4567 = vrsqrteq_f32(vx4567);
40 const float32x4_t vrsqrtx89AB = vrsqrteq_f32(vx89AB);
41 const float32x4_t vrsqrtxCDEF = vrsqrteq_f32(vxCDEF);
42 const float32x4_t vrsqrtxGHIJ = vrsqrteq_f32(vxGHIJ);
43 const float32x4_t vrsqrtxKLMN = vrsqrteq_f32(vxKLMN);
44 const float32x4_t vrsqrtxOPQR = vrsqrteq_f32(vxOPQR);
45
46 float32x4_t vsqrtx0123 = vmulq_f32(vrsqrtx0123, vx0123);
47 float32x4_t vhalfrsqrtx0123 = vmulq_f32(vrsqrtx0123, vhalf);
48 float32x4_t vsqrtx4567 = vmulq_f32(vrsqrtx4567, vx4567);
49 float32x4_t vhalfrsqrtx4567 = vmulq_f32(vrsqrtx4567, vhalf);
50 float32x4_t vsqrtx89AB = vmulq_f32(vrsqrtx89AB, vx89AB);
51 float32x4_t vhalfrsqrtx89AB = vmulq_f32(vrsqrtx89AB, vhalf);
52 float32x4_t vsqrtxCDEF = vmulq_f32(vrsqrtxCDEF, vxCDEF);
53 float32x4_t vhalfrsqrtxCDEF = vmulq_f32(vrsqrtxCDEF, vhalf);
54 float32x4_t vsqrtxGHIJ = vmulq_f32(vrsqrtxGHIJ, vxGHIJ);
55 float32x4_t vhalfrsqrtxGHIJ = vmulq_f32(vrsqrtxGHIJ, vhalf);
56 float32x4_t vsqrtxKLMN = vmulq_f32(vrsqrtxKLMN, vxKLMN);
57 float32x4_t vhalfrsqrtxKLMN = vmulq_f32(vrsqrtxKLMN, vhalf);
58 float32x4_t vsqrtxOPQR = vmulq_f32(vrsqrtxOPQR, vxOPQR);
59 float32x4_t vhalfrsqrtxOPQR = vmulq_f32(vrsqrtxOPQR, vhalf);
60
61 float32x4_t vresidual0123 = vfmsq_f32(vhalf, vsqrtx0123, vhalfrsqrtx0123);
62 float32x4_t vresidual4567 = vfmsq_f32(vhalf, vsqrtx4567, vhalfrsqrtx4567);
63 float32x4_t vresidual89AB = vfmsq_f32(vhalf, vsqrtx89AB, vhalfrsqrtx89AB);
64 float32x4_t vresidualCDEF = vfmsq_f32(vhalf, vsqrtxCDEF, vhalfrsqrtxCDEF);
65 float32x4_t vresidualGHIJ = vfmsq_f32(vhalf, vsqrtxGHIJ, vhalfrsqrtxGHIJ);
66 float32x4_t vresidualKLMN = vfmsq_f32(vhalf, vsqrtxKLMN, vhalfrsqrtxKLMN);
67 float32x4_t vresidualOPQR = vfmsq_f32(vhalf, vsqrtxOPQR, vhalfrsqrtxOPQR);
68
69 vhalfrsqrtx0123 = vfmaq_f32(vhalfrsqrtx0123, vresidual0123, vhalfrsqrtx0123);
70 vsqrtx0123 = vfmaq_f32(vsqrtx0123, vresidual0123, vsqrtx0123);
71 vhalfrsqrtx4567 = vfmaq_f32(vhalfrsqrtx4567, vresidual4567, vhalfrsqrtx4567);
72 vsqrtx4567 = vfmaq_f32(vsqrtx4567, vresidual4567, vsqrtx4567);
73 vhalfrsqrtx89AB = vfmaq_f32(vhalfrsqrtx89AB, vresidual89AB, vhalfrsqrtx89AB);
74 vsqrtx89AB = vfmaq_f32(vsqrtx89AB, vresidual89AB, vsqrtx89AB);
75 vhalfrsqrtxCDEF = vfmaq_f32(vhalfrsqrtxCDEF, vresidualCDEF, vhalfrsqrtxCDEF);
76 vsqrtxCDEF = vfmaq_f32(vsqrtxCDEF, vresidualCDEF, vsqrtxCDEF);
77 vhalfrsqrtxGHIJ = vfmaq_f32(vhalfrsqrtxGHIJ, vresidualGHIJ, vhalfrsqrtxGHIJ);
78 vsqrtxGHIJ = vfmaq_f32(vsqrtxGHIJ, vresidualGHIJ, vsqrtxGHIJ);
79 vhalfrsqrtxKLMN = vfmaq_f32(vhalfrsqrtxKLMN, vresidualKLMN, vhalfrsqrtxKLMN);
80 vsqrtxKLMN = vfmaq_f32(vsqrtxKLMN, vresidualKLMN, vsqrtxKLMN);
81 vhalfrsqrtxOPQR = vfmaq_f32(vhalfrsqrtxOPQR, vresidualOPQR, vhalfrsqrtxOPQR);
82 vsqrtxOPQR = vfmaq_f32(vsqrtxOPQR, vresidualOPQR, vsqrtxOPQR);
83
84 vresidual0123 = vfmsq_f32(vhalf, vsqrtx0123, vhalfrsqrtx0123);
85 vresidual4567 = vfmsq_f32(vhalf, vsqrtx4567, vhalfrsqrtx4567);
86 vresidual89AB = vfmsq_f32(vhalf, vsqrtx89AB, vhalfrsqrtx89AB);
87 vresidualCDEF = vfmsq_f32(vhalf, vsqrtxCDEF, vhalfrsqrtxCDEF);
88 vresidualGHIJ = vfmsq_f32(vhalf, vsqrtxGHIJ, vhalfrsqrtxGHIJ);
89 vresidualKLMN = vfmsq_f32(vhalf, vsqrtxKLMN, vhalfrsqrtxKLMN);
90 vresidualOPQR = vfmsq_f32(vhalf, vsqrtxOPQR, vhalfrsqrtxOPQR);
91
92 vhalfrsqrtx0123 = vfmaq_f32(vhalfrsqrtx0123, vresidual0123, vhalfrsqrtx0123);
93 vsqrtx0123 = vfmaq_f32(vsqrtx0123, vresidual0123, vsqrtx0123);
94 vhalfrsqrtx4567 = vfmaq_f32(vhalfrsqrtx4567, vresidual4567, vhalfrsqrtx4567);
95 vsqrtx4567 = vfmaq_f32(vsqrtx4567, vresidual4567, vsqrtx4567);
96 vhalfrsqrtx89AB = vfmaq_f32(vhalfrsqrtx89AB, vresidual89AB, vhalfrsqrtx89AB);
97 vsqrtx89AB = vfmaq_f32(vsqrtx89AB, vresidual89AB, vsqrtx89AB);
98 vhalfrsqrtxCDEF = vfmaq_f32(vhalfrsqrtxCDEF, vresidualCDEF, vhalfrsqrtxCDEF);
99 vsqrtxCDEF = vfmaq_f32(vsqrtxCDEF, vresidualCDEF, vsqrtxCDEF);
100 vhalfrsqrtxGHIJ = vfmaq_f32(vhalfrsqrtxGHIJ, vresidualGHIJ, vhalfrsqrtxGHIJ);
101 vsqrtxGHIJ = vfmaq_f32(vsqrtxGHIJ, vresidualGHIJ, vsqrtxGHIJ);
102 vhalfrsqrtxKLMN = vfmaq_f32(vhalfrsqrtxKLMN, vresidualKLMN, vhalfrsqrtxKLMN);
103 vsqrtxKLMN = vfmaq_f32(vsqrtxKLMN, vresidualKLMN, vsqrtxKLMN);
104 vhalfrsqrtxOPQR = vfmaq_f32(vhalfrsqrtxOPQR, vresidualOPQR, vhalfrsqrtxOPQR);
105 vsqrtxOPQR = vfmaq_f32(vsqrtxOPQR, vresidualOPQR, vsqrtxOPQR);
106
107 const float32x4_t vadjustment0123 = vfmsq_f32(vx0123, vsqrtx0123, vsqrtx0123);
108 const float32x4_t vadjustment4567 = vfmsq_f32(vx4567, vsqrtx4567, vsqrtx4567);
109 const float32x4_t vadjustment89AB = vfmsq_f32(vx89AB, vsqrtx89AB, vsqrtx89AB);
110 const float32x4_t vadjustmentCDEF = vfmsq_f32(vxCDEF, vsqrtxCDEF, vsqrtxCDEF);
111 const float32x4_t vadjustmentGHIJ = vfmsq_f32(vxGHIJ, vsqrtxGHIJ, vsqrtxGHIJ);
112 const float32x4_t vadjustmentKLMN = vfmsq_f32(vxKLMN, vsqrtxKLMN, vsqrtxKLMN);
113 const float32x4_t vadjustmentOPQR = vfmsq_f32(vxOPQR, vsqrtxOPQR, vsqrtxOPQR);
114
115 const float32x4_t vy0123 = vfmaq_f32(vsqrtx0123, vhalfrsqrtx0123, vadjustment0123);
116 const float32x4_t vy4567 = vfmaq_f32(vsqrtx4567, vhalfrsqrtx4567, vadjustment4567);
117 const float32x4_t vy89AB = vfmaq_f32(vsqrtx89AB, vhalfrsqrtx89AB, vadjustment89AB);
118 const float32x4_t vyCDEF = vfmaq_f32(vsqrtxCDEF, vhalfrsqrtxCDEF, vadjustmentCDEF);
119 const float32x4_t vyGHIJ = vfmaq_f32(vsqrtxGHIJ, vhalfrsqrtxGHIJ, vadjustmentGHIJ);
120 const float32x4_t vyKLMN = vfmaq_f32(vsqrtxKLMN, vhalfrsqrtxKLMN, vadjustmentKLMN);
121 const float32x4_t vyOPQR = vfmaq_f32(vsqrtxOPQR, vhalfrsqrtxOPQR, vadjustmentOPQR);
122
123 vst1q_f32(y, vy0123); y += 4;
124 vst1q_f32(y, vy4567); y += 4;
125 vst1q_f32(y, vy89AB); y += 4;
126 vst1q_f32(y, vyCDEF); y += 4;
127 vst1q_f32(y, vyGHIJ); y += 4;
128 vst1q_f32(y, vyKLMN); y += 4;
129 vst1q_f32(y, vyOPQR); y += 4;
130 }
131 if XNN_UNLIKELY(n != 0) {
132 do {
133 const float vx = *x++;
134 const float vy = sqrtf(vx);
135 *y++ = vy;
136 n -= sizeof(float);
137 } while (n != 0);
138 }
139 }
140