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/*========================== begin_copyright_notice ============================
Copyright (C) 2021 Intel Corporation
SPDX-License-Identifier: MIT
============================= end_copyright_notice ===========================*/
#pragma once
#include "IGC/common/StringMacros.hpp"
#include "Compiler/CodeGenPublic.h"
#include "Compiler/CISACodeGen/helper.h"
#include "Compiler/MetaDataUtilsWrapper.h"
#include "common/LLVMWarningsPush.hpp"
#include <llvm/IR/PassManager.h>
#include "common/LLVMWarningsPop.hpp"
namespace IGC
{
class DivergentBarrierPass : public llvm::ModulePass
{
public:
DivergentBarrierPass(void* Ctx = nullptr) :
llvm::ModulePass(ID), Ctx(Ctx) {}
bool runOnModule(llvm::Module& M) override;
void getAnalysisUsage(llvm::AnalysisUsage& AU) const override
{
AU.addRequired<MetaDataUtilsWrapper>();
AU.addRequired<CodeGenContextWrapper>();
}
static char ID;
llvm::StringRef getPassName() const override
{
return "DivergentBarrierPass";
}
private:
struct FenceArgs
{
bool CommitEnable = true;
bool L3_Flush_RW_Data = false;
bool L3_Flush_Constant_Data = false;
bool L3_Flush_Texture_Data = false;
bool L3_Flush_Instructions = false;
bool Global = false;
bool L1_Invalidate = false;
};
CodeGenContext* m_CGCtx = nullptr;
IGCMD::MetaDataUtils* m_MDUtils = nullptr;
bool processShader(llvm::Function* F);
bool hasDivergentBarrier(
const std::vector<llvm::Instruction*>& Barriers) const;
llvm::Function* createContinuation(llvm::BasicBlock* EntryBB);
void updateFenceArgs(
const llvm::GenIntrinsicInst* I, FenceArgs& Args) const;
void generateBody(
llvm::Function* Wrapper,
llvm::Function* Entry,
const std::vector<llvm::Function*>& Continuations,
const FenceArgs &FA);
llvm::Value* getGroupSize(llvm::Function& F) const;
llvm::Value* allocateSLM(llvm::IRBuilder<> &IRB);
llvm::CallInst* insertFence(llvm::IRBuilder<>& IRB, const FenceArgs& FA) const;
void handleSpillFill(llvm::Function* F) const;
void* Ctx = nullptr;
};
void initializeDivergentBarrierPassPass(llvm::PassRegistry&);
llvm::ModulePass* createDivergentBarrierPass(void* Ctx);
}//namespace IGC
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