diff options
Diffstat (limited to 'lib/Transforms/Scalar/JumpThreading.cpp')
| -rw-r--r-- | lib/Transforms/Scalar/JumpThreading.cpp | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/lib/Transforms/Scalar/JumpThreading.cpp b/lib/Transforms/Scalar/JumpThreading.cpp index 5de5fb3b77..114603dabb 100644 --- a/lib/Transforms/Scalar/JumpThreading.cpp +++ b/lib/Transforms/Scalar/JumpThreading.cpp @@ -164,7 +164,8 @@ bool JumpThreading::ProcessBlock(BasicBlock *BB) { // because now the condition in this block can be threaded through // predecessors of our predecessor block. if (BasicBlock *SinglePred = BB->getSinglePredecessor()) - if (SinglePred->getTerminator()->getNumSuccessors() == 1) { + if (SinglePred->getTerminator()->getNumSuccessors() == 1 && + SinglePred != BB) { // Remember if SinglePred was the entry block of the function. If so, we // will need to move BB back to the entry position. bool isEntry = SinglePred == &SinglePred->getParent()->getEntryBlock(); |