46 lines
1.4 KiB
C
46 lines
1.4 KiB
C
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//===-- UnifyFunctionExitNodes.h - Ensure fn's have one return --*- C++ -*-===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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//
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// This pass is used to ensure that functions have at most one return and one
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// unreachable instruction in them.
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_TRANSFORMS_UTILS_UNIFYFUNCTIONEXITNODES_H
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#define LLVM_TRANSFORMS_UTILS_UNIFYFUNCTIONEXITNODES_H
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#include "llvm/IR/PassManager.h"
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#include "llvm/Pass.h"
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namespace llvm {
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class BasicBlock;
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class UnifyFunctionExitNodesLegacyPass : public FunctionPass {
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public:
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static char ID; // Pass identification, replacement for typeid
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UnifyFunctionExitNodesLegacyPass();
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// We can preserve non-critical-edgeness when we unify function exit nodes
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void getAnalysisUsage(AnalysisUsage &AU) const override;
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bool runOnFunction(Function &F) override;
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};
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Pass *createUnifyFunctionExitNodesPass();
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class UnifyFunctionExitNodesPass
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: public PassInfoMixin<UnifyFunctionExitNodesPass> {
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public:
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PreservedAnalyses run(Function &F, FunctionAnalysisManager &AM);
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};
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} // end namespace llvm
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#endif // LLVM_TRANSFORMS_UTILS_UNIFYFUNCTIONEXITNODES_H
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