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/*========================== begin_copyright_notice ============================
Copyright (C) 2017-2021 Intel Corporation
SPDX-License-Identifier: MIT
============================= end_copyright_notice ===========================*/
#pragma once
#include "Compiler/CISACodeGen/helper.h"
#include "Compiler/CISACodeGen/ShaderCodeGen.hpp"
#include "Compiler/MetaDataUtilsWrapper.h"
#include "Compiler/MetaDataApi/MetaDataApi.h"
#include "common/LLVMWarningsPush.hpp"
#include <llvm/IR/PassManager.h>
#include <llvm/IR/IRBuilder.h>
#include <llvm/IR/InstVisitor.h>
#include "common/LLVMWarningsPop.hpp"
namespace IGC {
/// @brief This pass fixes the usage of GetBufferPtr, remove the combination of GetBufferPtr and GetElementPtr
class FixResourcePtr : public llvm::FunctionPass {
public:
/// Pass identification, replacement for typeid
static char ID;
/// @brief Constructor
FixResourcePtr();
/// @brief Destructor
~FixResourcePtr() {}
/// @brief Provides name of pass
virtual llvm::StringRef getPassName() const override { return "FixResourcePtrPass"; }
/// @brief Main entry point.
/// @param F The destination function.
virtual bool runOnFunction(llvm::Function &F) override;
virtual void getAnalysisUsage(llvm::AnalysisUsage &AU) const override { IGC_UNUSED(AU); }
private:
llvm::Value *ResolveBufferIndex(llvm::Value *bufferIndex, llvm::Value *vectorIndex = nullptr);
void RemoveGetBufferPtr(llvm::GenIntrinsicInst *bufPtr, llvm::Value *bufIdx);
void FindGetElementPtr(llvm::Instruction *bufPtr, llvm::Instruction *searchPtr);
void FindLoadStore(llvm::Instruction *bufPtr, llvm::Instruction *eltPtr, llvm::Instruction *searchPtr);
llvm::Value *GetByteOffset(llvm::Instruction *eltPtr);
llvm::Value *CreateLoadIntrinsic(llvm::LoadInst *inst, llvm::Instruction *bufPtr, llvm::Value *offsetVal);
llvm::Value *CreateStoreIntrinsic(llvm::StoreInst *inst, llvm::Instruction *bufPtr, llvm::Value *offsetVal);
/// @brief Indicates if the pass changed the processed function
bool m_changed;
/// Function we are processing
llvm::Function *curFunc;
/// Need data-layout for fixing pointer
const llvm::DataLayout *DL;
/// agent to modify the llvm-ir
llvm::IRBuilder<> *builder;
/// list of clean up after change
std::vector<llvm::Instruction *> eraseList;
};
} // namespace IGC
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