1 //===- BreakCriticalEdges.h - Critical Edge Elimination Pass --------------===//
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 // BreakCriticalEdges pass - Break all of the critical edges in the CFG by
10 // inserting a dummy basic block.  This pass may be "required" by passes that
11 // cannot deal with critical edges.  For this usage, the structure type is
12 // forward declared.  This pass obviously invalidates the CFG, but can update
13 // dominator trees.
14 //
15 //===----------------------------------------------------------------------===//
16 
17 #ifndef LLVM_TRANSFORMS_UTILS_BREAKCRITICALEDGES_H
18 #define LLVM_TRANSFORMS_UTILS_BREAKCRITICALEDGES_H
19 
20 #include "llvm/IR/PassManager.h"
21 
22 namespace llvm {
23 
24 class Function;
25 struct BreakCriticalEdgesPass : public PassInfoMixin<BreakCriticalEdgesPass> {
26   PreservedAnalyses run(Function &F, FunctionAnalysisManager &AM);
27 };
28 } // namespace llvm
29 #endif // LLVM_TRANSFORMS_UTILS_BREAKCRITICALEDGES_H
30