mirror of https://github.com/alibaba/MNN.git
87 lines
2.2 KiB
C++
87 lines
2.2 KiB
C++
//
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// Arm82Relu.cpp
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// MNN
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//
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// Created by MNN on 2020/2/13.
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// Copyright © 2018, Alibaba Group Holding Limited
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//
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#ifdef __aarch64__
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#include "backend/arm82/Arm82Relu.hpp"
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#include "backend/arm82/Arm82Backend.hpp"
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#include "core/Macro.h"
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#include "MNN_generated.h"
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#ifdef MNN_USE_NEON
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#include <arm_neon.h>
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#endif
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namespace MNN {
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Arm82Relu::Arm82Relu(Backend *backend, const Op *op):Execution(backend){
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}
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ErrorCode Arm82Relu::onExecute(const std::vector<Tensor *> &inputs, const std::vector<Tensor *> &outputs){
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auto input = inputs[0];
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auto output = outputs[0];
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const int elementSize = input->elementSize();
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const int sizeDivUnit = elementSize / ARMV82_CHANNEL_UNIT;
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const int remainCount = elementSize - sizeDivUnit * ARMV82_CHANNEL_UNIT;
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const auto src = input->host<FLOAT16>();
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auto dst = output->host<FLOAT16>();
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#ifdef MNN_USE_NEON
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float16x8_t value_0 = vmovq_n_f16(0);
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#endif
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if(sizeDivUnit > 0){
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for(int i = 0; i < sizeDivUnit; ++i){
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const auto srcPtr = src + i * ARMV82_CHANNEL_UNIT;
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auto dstPtr = dst + i * ARMV82_CHANNEL_UNIT;
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#ifdef MNN_USE_NEON
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float16x8_t a = vld1q_f16(srcPtr);
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vst1q_f16(dstPtr, vmaxq_f16(a, value_0));
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#else
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for(int i = 0; i < ARMV82_CHANNEL_UNIT; ++i){
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dstPtr[i] = srcPtr[i];
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if(srcPtr[i] < 0){
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dstPtr[i] = 0;
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}
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}
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#endif
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}
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}
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if(remainCount > 0){
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for(int i = sizeDivUnit * ARMV82_CHANNEL_UNIT; i < elementSize; ++i){
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dst[i] = src[i];
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if(src[i] < 0){
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dst[i] = 0;
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}
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}
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}
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return NO_ERROR;
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}
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class Arm82ReluCreator : public Arm82Backend::Arm82Creator {
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virtual Execution *onCreate(const std::vector<Tensor *> &inputs, const std::vector<Tensor *> &outputs,
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const MNN::Op *op, Backend *backend) const override {
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auto param = op->main_as_Relu();
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if(param->slope() != 0){
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return nullptr;
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}
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return new Arm82Relu(backend, op);
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}
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};
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REGISTER_ARM82_OP_CREATOR(OpType_ReLU, Arm82ReluCreator);
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} // namespace MNN
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#endif |