LLVM 17.0.0git
UnifyFunctionExitNodes.h
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1//===-- UnifyFunctionExitNodes.h - Ensure fn's have one return --*- C++ -*-===//
2//
3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4// See https://llvm.org/LICENSE.txt for license information.
5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6//
7//===----------------------------------------------------------------------===//
8//
9// This pass is used to ensure that functions have at most one return and one
10// unreachable instruction in them.
11//
12//===----------------------------------------------------------------------===//
13
14#ifndef LLVM_TRANSFORMS_UTILS_UNIFYFUNCTIONEXITNODES_H
15#define LLVM_TRANSFORMS_UTILS_UNIFYFUNCTIONEXITNODES_H
16
17#include "llvm/IR/PassManager.h"
18#include "llvm/Pass.h"
19
20namespace llvm {
21
23public:
24 static char ID; // Pass identification, replacement for typeid
26
27 // We can preserve non-critical-edgeness when we unify function exit nodes
28 void getAnalysisUsage(AnalysisUsage &AU) const override;
29
30 bool runOnFunction(Function &F) override;
31};
32
34
36 : public PassInfoMixin<UnifyFunctionExitNodesPass> {
37public:
39};
40
41} // end namespace llvm
42
43#endif // LLVM_TRANSFORMS_UTILS_UNIFYFUNCTIONEXITNODES_H
#define F(x, y, z)
Definition: MD5.cpp:55
This header defines various interfaces for pass management in LLVM.
A container for analyses that lazily runs them and caches their results.
Definition: PassManager.h:620
Represent the analysis usage information of a pass.
FunctionPass class - This class is used to implement most global optimizations.
Definition: Pass.h:311
Pass interface - Implemented by all 'passes'.
Definition: Pass.h:94
A set of analyses that are preserved following a run of a transformation pass.
Definition: PassManager.h:152
bool runOnFunction(Function &F) override
runOnFunction - Virtual method overriden by subclasses to do the per-function processing of the pass.
void getAnalysisUsage(AnalysisUsage &AU) const override
getAnalysisUsage - This function should be overriden by passes that need analysis information to do t...
PreservedAnalyses run(Function &F, FunctionAnalysisManager &AM)
This is an optimization pass for GlobalISel generic memory operations.
Definition: AddressRanges.h:18
Pass * createUnifyFunctionExitNodesPass()
A CRTP mix-in to automatically provide informational APIs needed for passes.
Definition: PassManager.h:371