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/*========================== begin_copyright_notice ============================
Copyright (C) 2025 Intel Corporation
SPDX-License-Identifier: MIT
============================= end_copyright_notice ===========================*/
#pragma once
#include "Compiler/CodeGenContextWrapper.hpp"
#include "Compiler/IGCPassSupport.h"
#include "Compiler/CISACodeGen/helper.h"
namespace IGC {
typedef std::tuple<size_t, size_t> IndicesTuple;
typedef std::map<size_t, llvm::ExtractValueInst *> ExtractValueMap;
typedef std::map<size_t, llvm::InsertValueInst *> IncomingValuesMap;
// Constant values to describe zeroinitializer and non-zeroinitializer indices of phi incoming values.
const size_t Zero = 0;
const size_t NonZero = 1;
class SplitStructurePhisPass : public llvm::FunctionPass {
public:
static char ID;
SplitStructurePhisPass();
virtual llvm::StringRef getPassName() const override { return "Split structure phis"; }
virtual void getAnalysisUsage(llvm::AnalysisUsage &AU) const override { AU.setPreservesCFG(); }
virtual bool runOnFunction(llvm::Function &F) override;
private:
IndicesTuple getIndices(llvm::PHINode *Phi);
bool isStructOfVectorsType(llvm::Type *Ty);
bool checkNonZeroIncValue(llvm::Value *IncVal, IncomingValuesMap &InsertValues);
bool isPhiNodeParsedByExtrVal(llvm::PHINode *Phi, ExtractValueMap &ExtractValues);
bool isLastInsertValueInst(llvm::InsertValueInst *InsertValInst, llvm::PHINode *OldPhi);
void createVectorPhi(llvm::PHINode *OldPhi, const IndicesTuple &Indices, llvm::ExtractValueInst *ExtractInst,
llvm::InsertValueInst *InsertVal);
void createScalarPhi(llvm::PHINode *OldPhi, llvm::Type *NewScalarType, const IndicesTuple &Indices,
llvm::ExtractValueInst *OldExtractInst, llvm::InsertValueInst *OldInsertValInst);
void cleanUp();
// Phi nodes and their zeroinitializer and non-zeroinitializer indices.
llvm::DenseMap<llvm::PHINode *, std::tuple<IndicesTuple, ExtractValueMap, IncomingValuesMap>> PhiNodes;
llvm::SmallSet<llvm::InsertValueInst *, 8> InsertValueInstsToRemove;
llvm::SmallSet<llvm::ExtractValueInst *, 8> ExtractValueInstsToRemove;
llvm::SmallSet<llvm::PHINode *, 8> PhiNodeInstsToRemove;
};
} // namespace IGC
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