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/*========================== begin_copyright_notice ============================
Copyright (C) 2019-2021 Intel Corporation
SPDX-License-Identifier: MIT
============================= end_copyright_notice ===========================*/
#pragma once
#include "Compiler/CodeGenContextWrapper.hpp"
#include "Compiler/IGCPassSupport.h"
#include "common/LLVMWarningsPush.hpp"
#include <llvm/IR/Constants.h>
#include <llvm/IR/Dominators.h>
#include <llvm/Analysis/DependenceAnalysis.h>
#include <llvm/IR/Function.h>
#include <llvm/IR/InstVisitor.h>
#include <llvm/IR/InstrTypes.h>
#include <llvm/IR/Instructions.h>
#include <llvm/ADT/SmallSet.h>
#include <llvm/Pass.h>
#include "common/LLVMWarningsPop.hpp"
using namespace llvm;
namespace IGC {
class SampleMultiversioning : public llvm::FunctionPass, public llvm::InstVisitor<SampleMultiversioning> {
public:
static char ID;
CodeGenContext *pContext;
DominatorTree *DT = nullptr;
SampleMultiversioning(CodeGenContext *pContext);
SampleMultiversioning();
~SampleMultiversioning() {}
virtual llvm::StringRef getPassName() const override { return "Sample Multiversioning"; }
virtual bool runOnFunction(llvm::Function &F) override;
virtual void getAnalysisUsage(llvm::AnalysisUsage &AU) const override {
AU.addRequired<CodeGenContextWrapper>();
AU.addRequired<llvm::DominatorTreeWrapperPass>();
}
private:
bool isOnlyExtractedAfterSample(Value *SampleInst, SmallVector<Instruction *, 4> &ExtrVals);
bool isOnlyMultiplied(Instruction *Sample, Instruction *Val, SmallSet<Instruction *, 4> &MulVals);
Instruction *getPureFunction(Value *Val);
bool isOnlyMultipliedAfterSample(Instruction *Val, SmallSet<Instruction *, 4> &MulVals);
};
} // namespace IGC
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