1 /*
2 * Copyright (c) 2020-2022 Arm Limited.
3 *
4 * SPDX-License-Identifier: MIT
5 *
6 * Permission is hereby granted, free of charge, to any person obtaining a copy
7 * of this software and associated documentation files (the "Software"), to
8 * deal in the Software without restriction, including without limitation the
9 * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
10 * sell copies of the Software, and to permit persons to whom the Software is
11 * furnished to do so, subject to the following conditions:
12 *
13 * The above copyright notice and this permission notice shall be included in all
14 * copies or substantial portions of the Software.
15 *
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
19 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
20 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
21 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
22 * SOFTWARE.
23 */
24 #include "arm_compute/core/Helpers.h"
25 #include "arm_compute/core/ITensorPack.h"
26 #include "arm_compute/core/Window.h"
27 #include "arm_compute/core/experimental/Types.h"
28
29 #include <cmath>
30 #include <cstddef>
31
32 #include "src/core/NEON/SVEMath.h"
33 #include "src/core/NEON/SVESymm.h"
34 #include <arm_sve.h>
35
36 namespace arm_compute
37 {
38 namespace cpu
39 {
sve2_qsymm16_activation(const ITensor * src,ITensor * dst,const ActivationLayerInfo & act_info,const Window & window)40 void sve2_qsymm16_activation(const ITensor *src, ITensor *dst, const ActivationLayerInfo &act_info, const Window &window)
41 {
42 const auto window_start_x = static_cast<int>(window.x().start());
43 const auto window_end_x = static_cast<int>(window.x().end());
44 const ActivationLayerInfo::ActivationFunction act = act_info.activation();
45
46 Window win_collapsed = window.collapse_if_possible(window, Window::DimZ);
47 win_collapsed.set(Window::DimX, Window::Dimension(0, 1, 1));
48
49 Iterator input(src, win_collapsed);
50 Iterator output(dst, win_collapsed);
51
52 const UniformQuantizationInfo qi_in = src->info()->quantization_info().uniform();
53 const UniformQuantizationInfo qi_out = dst->info()->quantization_info().uniform();
54 const auto vconst_1 = svdup_n_f32(1.f);
55 const auto va_f32 = svdup_n_f32(act_info.a());
56 const auto vb_f32 = svdup_n_f32(act_info.b());
57
58 execute_window_loop(win_collapsed, [&](const Coordinates &)
59 {
60 const auto input_ptr = reinterpret_cast<const int16_t *>(input.ptr());
61 const auto output_ptr = reinterpret_cast<int16_t *>(output.ptr());
62
63 svint16_t tmp;
64
65 int x = window_start_x;
66 svbool_t pg = svwhilelt_b16(x, window_end_x);
67 do
68 {
69 const auto vin = svld1_s16(pg, input_ptr + x);
70 if(act == ActivationLayerInfo::ActivationFunction::LOGISTIC)
71 {
72 // De-quantize
73 auto vin_deq = svdequantize_qsymm16_z(pg, vin, qi_in.scale);
74 // Perform activation
75 const svfloat32x2_t tmp_dep = svcreate2_f32(svdiv_f32_z(pg, vconst_1, svadd_f32_z(pg, vconst_1, svexp_f32_z(pg, svneg_f32_z(pg, svget2_f32(vin_deq, 0))))),
76 svdiv_f32_z(pg, vconst_1, svadd_f32_z(pg, vconst_1, svexp_f32_z(pg, svneg_f32_z(pg, svget2_f32(vin_deq, 1))))));
77 // Re-quantize to new output space
78 tmp = svquantize_qsymm16_z(pg, tmp_dep, qi_out.scale);
79 }
80 else if(act == ActivationLayerInfo::ActivationFunction::TANH)
81 {
82 // De-quantize
83 auto vin_deq = svdequantize_qsymm16_z(pg, vin, qi_in.scale);
84 // Perform activation
85 const svfloat32x2_t tmp_dep = svcreate2_f32(svmul_f32_z(pg, va_f32, svtanh_f32_z(pg, svmul_f32_z(pg, svget2_f32(vin_deq, 0), vb_f32))),
86 svmul_f32_z(pg, va_f32, svtanh_f32_z(pg, svmul_f32_z(pg, svget2_f32(vin_deq, 1), vb_f32))));
87 // Re-quantize to new output space
88 tmp = svquantize_qsymm16_z(pg, tmp_dep, qi_out.scale);
89 }
90 else if(act == ActivationLayerInfo::ActivationFunction::LU_BOUNDED_RELU)
91 {
92 // De-quantize
93 auto vin_deq = svdequantize_qsymm16_z(pg, vin, qi_in.scale);
94 // Perform activation
95 const svfloat32x2_t tmp_dep = svcreate2_f32(svmin_f32_z(pg, va_f32, svmax_f32_z(pg, vb_f32, svget2_f32(vin_deq, 0))),
96 svmin_f32_z(pg, va_f32, svmax_f32_z(pg, vb_f32, svget2_f32(vin_deq, 1))));
97 // Re-quantize to new output space
98 tmp = svquantize_qsymm16_z(pg, tmp_dep, qi_out.scale);
99 }
100 else
101 {
102 ARM_COMPUTE_ERROR("Unsupported activation function");
103 }
104
105 svst1_s16(pg, output_ptr + x, tmp);
106
107 x += svcnth();
108 pg = svwhilelt_b16(x, window_end_x);
109
110 }
111 while(svptest_any(svptrue_b16(), pg));
112 },
113 input, output);
114 }
115 } // namespace cpu
116 } // namespace arm_compute
117