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51 lines
1.4 KiB
C++
51 lines
1.4 KiB
C++
/*========================== begin_copyright_notice ============================
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Copyright (C) 2017-2021 Intel Corporation
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SPDX-License-Identifier: MIT
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============================= end_copyright_notice ===========================*/
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#pragma once
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#include "Compiler/CISACodeGen/DeSSA.hpp"
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#include "Compiler/CISACodeGen/PatternMatchPass.hpp"
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#include "Compiler/MetaDataUtilsWrapper.h"
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#include "common/LLVMWarningsPush.hpp"
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#include <llvm/Pass.h>
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#include "common/LLVMWarningsPop.hpp"
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namespace IGC {
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class CodeGenContextWrapper;
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class BlockCoalescing : public llvm::FunctionPass {
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public:
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static char ID;
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BlockCoalescing();
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virtual void getAnalysisUsage(llvm::AnalysisUsage &AU) const override {
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AU.setPreservesAll();
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AU.addRequired<DeSSA>();
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AU.addRequired<CodeGenPatternMatch>();
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AU.addRequired<MetaDataUtilsWrapper>();
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AU.addRequired<CodeGenContextWrapper>();
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}
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bool runOnFunction(llvm::Function &F) override;
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virtual llvm::StringRef getPassName() const override { return "BlockCoalescing"; }
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bool IsEmptyBlock(llvm::BasicBlock *bb);
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/// look for the next none-empty basick block
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llvm::BasicBlock *SkipEmptyBasicBlock(llvm::BasicBlock *bb);
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/// look for the destination to jump to if the block is empty
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llvm::BasicBlock *FollowEmptyBlock(llvm::BasicBlock *bb);
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protected:
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llvm::DenseSet<llvm::BasicBlock *> m_emptyBlocks;
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private:
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bool hasEmptyBlockLoop(llvm::BasicBlock *EmptyBlock);
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};
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} // namespace IGC
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