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authorJay Foad <jay.foad@gmail.com>2011-06-21 10:02:43 +0000
committerJay Foad <jay.foad@gmail.com>2011-06-21 10:02:43 +0000
commit69254f67a54656ebf88fe854d0e8bf7fc58abda6 (patch)
treeb5e053aa43767a6c1ee457d9bf46386ff7dcfd9f /lib/Transforms
parent80be2a26541f81374e8f1625b2d9f08de5b1f5d8 (diff)
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Don't use PN->replaceUsesOfWith() to change a PHINode's incoming blocks,
because it won't work after my phi operand changes, because the incoming blocks will no longer be Uses. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@133512 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/Transforms')
-rw-r--r--lib/Transforms/Scalar/LoopDeletion.cpp4
1 files changed, 3 insertions, 1 deletions
diff --git a/lib/Transforms/Scalar/LoopDeletion.cpp b/lib/Transforms/Scalar/LoopDeletion.cpp
index 753a558..f7f3298 100644
--- a/lib/Transforms/Scalar/LoopDeletion.cpp
+++ b/lib/Transforms/Scalar/LoopDeletion.cpp
@@ -190,7 +190,9 @@ bool LoopDeletion::runOnLoop(Loop* L, LPPassManager& LPM) {
BasicBlock* exitingBlock = exitingBlocks[0];
BasicBlock::iterator BI = exitBlock->begin();
while (PHINode* P = dyn_cast<PHINode>(BI)) {
- P->replaceUsesOfWith(exitingBlock, preheader);
+ int j = P->getBasicBlockIndex(exitingBlock);
+ assert(j >= 0 && "Can't find exiting block in exit block's phi node!");
+ P->setIncomingBlock(j, preheader);
for (unsigned i = 1; i < exitingBlocks.size(); ++i)
P->removeIncomingValue(exitingBlocks[i]);
++BI;