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/*========================== begin_copyright_notice ============================
Copyright (C) 2017-2021 Intel Corporation
SPDX-License-Identifier: MIT
============================= end_copyright_notice ===========================*/
#ifndef __GEN_UPDATE_CB__
#define __GEN_UPDATE_CB__
#include "Compiler/CodeGenPublic.h"
#include "common/LLVMWarningsPush.hpp"
#include <llvm/IR/Function.h>
#include <llvm/IR/Instructions.h>
#include <llvm/IR/Intrinsics.h>
#include <llvm/IR/InstIterator.h>
#include <llvm/ADT/SetVector.h>
#include <llvm/Transforms/Utils/Local.h>
#include <llvm/Transforms/Utils/BasicBlockUtils.h>
#include <llvm/Transforms/Utils/ValueMapper.h>
#include "common/LLVMWarningsPop.hpp"
void initializeGenUpdateCBPass(llvm::PassRegistry&);
namespace IGC
{
class GenUpdateCB : public llvm::FunctionPass
{
public:
static char ID;
GenUpdateCB() : llvm::FunctionPass(ID)
{
initializeGenUpdateCBPass(*llvm::PassRegistry::getPassRegistry());
}
virtual llvm::StringRef getPassName() const { return "GenUpdateCB"; }
virtual bool runOnFunction(llvm::Function& F);
virtual void getAnalysisUsage(llvm::AnalysisUsage& AU) const
{
AU.setPreservesCFG();
AU.addRequired<CodeGenContextWrapper>();
AU.addRequired<llvm::DominatorTreeWrapperPass>();
}
private:
bool isConstantBufferLoad(llvm::LoadInst* inst, unsigned& bufId);
bool allSrcConstantOrImm(llvm::Instruction* inst);
bool updateCbAllowedInst(llvm::Instruction* inst);
void InsertInstTree(llvm::Instruction* inst, llvm::Instruction* pos);
llvm::Instruction* CreateModule(llvm::Module* newModule);
const unsigned FLAG_LOAD = 1;
const unsigned FLAG_RESINFO = 2;
CodeGenContext* m_ctx;
// For each instruction in m_CbUpadteMap, we record whether it's
// coming from a load or resinfo.
llvm::DenseMap<llvm::Value*, unsigned> m_CbUpdateMap;
llvm::ValueToValueMapTy vmap;
llvm::Module* m_ConstantBufferReplaceShaderPatterns = nullptr;
uint m_ConstantBufferReplaceShaderPatternsSize = 0;
uint m_ConstantBufferUsageMask = 0;
uint m_maxCBcases = 128;
};
}
#endif
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