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/*========================== begin_copyright_notice ============================
Copyright (C) 2025 Intel Corporation
SPDX-License-Identifier: MIT
============================= end_copyright_notice ===========================*/
#include "common/LLVMWarningsPush.hpp"
#include <llvm/IR/Instructions.h>
#include <llvm/Pass.h>
#include <llvm/ADT/DenseSet.h>
#include <llvm/ADT/SetVector.h>
#include "common/LLVMWarningsPop.hpp"
#include "AllocationLivenessAnalyzer.h"
namespace llvm {
class Function;
} // namespace llvm
namespace IGC {
class MergeAllocas : public AllocationLivenessAnalyzer {
public:
struct AllocaInfo {
llvm::SmallVector<AllocaInfo *> nonOverlapingAllocas;
llvm::AllocaInst *allocaI;
AllocationLivenessAnalyzer::LivenessData *livenessData;
unsigned int addressSpace;
std::size_t allocationSize;
std::size_t remainingSize;
std::size_t alignment;
// start offset of this alloca in top level alloca (if any)
std::size_t offset;
bool isUniform;
};
MergeAllocas(char &pid) : AllocationLivenessAnalyzer(pid) {}
bool runOnFunction(llvm::Function &F) override;
virtual bool skipInstruction(llvm::Function &F, AllocationLivenessAnalyzer::LivenessData &LD) = 0;
void getAdditionalAnalysisUsage(llvm::AnalysisUsage &AU) const override {};
private:
std::vector<AllocaInfo> AllAllocasInfos;
};
} // namespace IGC
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