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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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