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| author | Dan Gohman <gohman@apple.com> | 2010-01-05 15:45:31 +0000 |
|---|---|---|
| committer | Dan Gohman <gohman@apple.com> | 2010-01-05 15:45:31 +0000 |
| commit | 90fe0bd68cdbeb980c08628c4992dffad0dc728f (patch) | |
| tree | 45ee1fa2edc9cb207d147301a3f8da79a5d7888c /include/llvm/Transforms/Utils/BasicBlockUtils.h | |
| parent | ad2cee44e02b4fa8d5888a80e39c01a9604b409e (diff) | |
| download | llvm-90fe0bd68cdbeb980c08628c4992dffad0dc728f.tar.gz llvm-90fe0bd68cdbeb980c08628c4992dffad0dc728f.tar.bz2 llvm-90fe0bd68cdbeb980c08628c4992dffad0dc728f.tar.xz | |
Make RecursivelyDeleteTriviallyDeadInstructions,
RecursivelyDeleteDeadPHINode, and DeleteDeadPHIs return a flag
indicating whether they made any changes.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@92732 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'include/llvm/Transforms/Utils/BasicBlockUtils.h')
| -rw-r--r-- | include/llvm/Transforms/Utils/BasicBlockUtils.h | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/include/llvm/Transforms/Utils/BasicBlockUtils.h b/include/llvm/Transforms/Utils/BasicBlockUtils.h index f1a99978ab..3f4571ebdd 100644 --- a/include/llvm/Transforms/Utils/BasicBlockUtils.h +++ b/include/llvm/Transforms/Utils/BasicBlockUtils.h @@ -40,8 +40,9 @@ void FoldSingleEntryPHINodes(BasicBlock *BB); /// DeleteDeadPHIs - Examine each PHI in the given block and delete it if it /// is dead. Also recursively delete any operands that become dead as /// a result. This includes tracing the def-use list from the PHI to see if -/// it is ultimately unused or if it reaches an unused cycle. -void DeleteDeadPHIs(BasicBlock *BB); +/// it is ultimately unused or if it reaches an unused cycle. Return true +/// if any PHIs were deleted. +bool DeleteDeadPHIs(BasicBlock *BB); /// MergeBlockIntoPredecessor - Attempts to merge a block into its predecessor, /// if possible. The return value indicates success or failure. |