1 // Auto-generated file. Do not edit!
2 // Template: src/f32-vsqrt/wasmsimd-sqrt.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 <wasm_simd128.h>
14
15 #include <xnnpack/common.h>
16 #include <xnnpack/vunary.h>
17
18
xnn_f32_vsqrt_ukernel__wasmsimd_sqrt_x8(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__wasmsimd_sqrt_x8(
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_OOB_READS
24 {
25 assert(n != 0);
26 assert(n % sizeof(float) == 0);
27
28 for (; n >= 8 * sizeof(float); n -= 8 * sizeof(float)) {
29 const v128_t vx0123 = wasm_v128_load(x);
30 const v128_t vx4567 = wasm_v128_load(x + 4);
31 x += 8;
32
33 const v128_t vy0123 = wasm_f32x4_sqrt(vx0123);
34 const v128_t vy4567 = wasm_f32x4_sqrt(vx4567);
35
36 wasm_v128_store(y, vy0123);
37 wasm_v128_store(y + 4, vy4567);
38 y += 8;
39 }
40 for (; n >= 4 * sizeof(float); n -= 4 * sizeof(float)) {
41 const v128_t vx = wasm_v128_load(x);
42 x += 4;
43 const v128_t vy = wasm_f32x4_sqrt(vx);
44 wasm_v128_store(y, vy);
45 y += 4;
46 }
47 if XNN_UNLIKELY(n != 0) {
48 const v128_t vx = wasm_v128_load(x);
49 v128_t vy = wasm_f32x4_sqrt(vx);
50 if (n & (2 * sizeof(float))) {
51 *((double*) y) = wasm_f64x2_extract_lane(vy, 0);
52 vy = wasm_v64x2_shuffle(vy, vy, 1, 1);
53 y += 2;
54 }
55 if (n & (1 * sizeof(float))) {
56 *y = wasm_f32x4_extract_lane(vy, 0);
57 }
58 }
59 }
60