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| author | Jim Grosbach <grosbach@apple.com> | 2009-11-19 02:02:10 +0000 |
|---|---|---|
| committer | Jim Grosbach <grosbach@apple.com> | 2009-11-19 02:02:10 +0000 |
| commit | 20f4d34fe3609cda8b70956a36080e9cbcd327d4 (patch) | |
| tree | a52554bb91dd24edaa8f8af5e45ebdaa1d3a3ab7 /include/llvm/Transforms/Utils/Local.h | |
| parent | 77bd09b650984044778c0259262dbae82135c23f (diff) | |
| download | external_llvm-20f4d34fe3609cda8b70956a36080e9cbcd327d4.zip external_llvm-20f4d34fe3609cda8b70956a36080e9cbcd327d4.tar.gz external_llvm-20f4d34fe3609cda8b70956a36080e9cbcd327d4.tar.bz2 | |
Make EliminateDuplicatePHINodes() available as a utility function
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@89297 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'include/llvm/Transforms/Utils/Local.h')
| -rw-r--r-- | include/llvm/Transforms/Utils/Local.h | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/include/llvm/Transforms/Utils/Local.h b/include/llvm/Transforms/Utils/Local.h index 292af1d..e6687bb 100644 --- a/include/llvm/Transforms/Utils/Local.h +++ b/include/llvm/Transforms/Utils/Local.h @@ -107,7 +107,14 @@ void MergeBasicBlockIntoOnlyPred(BasicBlock *BB, Pass *P = 0); /// rewriting all the predecessors to branch to the successor block and return /// true. If we can't transform, return false. bool TryToSimplifyUncondBranchFromEmptyBlock(BasicBlock *BB); - + +/// EliminateDuplicatePHINodes - Check for and eliminate duplicate PHI +/// nodes in this block. This doesn't try to be clever about PHI nodes +/// which differ only in the order of the incoming values, but instcombine +/// orders them so it usually won't matter. +/// +bool EliminateDuplicatePHINodes(BasicBlock *BB); + /// SimplifyCFG - This function is used to do simplification of a CFG. For /// example, it adjusts branches to branches to eliminate the extra hop, it /// eliminates unreachable basic blocks, and does other "peephole" optimization |