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author | Owen Anderson <resistor@mac.com> | 2006-06-27 22:26:09 +0000 |
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committer | Owen Anderson <resistor@mac.com> | 2006-06-27 22:26:09 +0000 |
commit | bef850873787b23aa1dc02520d8ab224660b4e5e (patch) | |
tree | 661ffabf84df1360ef835b3a00dc76eb6c7e71f3 /lib | |
parent | 2f62a9eb2e3576b06231ab4906bb83e023eb5864 (diff) | |
download | llvm-bef850873787b23aa1dc02520d8ab224660b4e5e.tar.gz llvm-bef850873787b23aa1dc02520d8ab224660b4e5e.tar.bz2 llvm-bef850873787b23aa1dc02520d8ab224660b4e5e.tar.xz |
Fix for 2006-06-27-DeadSwitchCase.ll
Be more careful when updating Phi nodes after eliminating dead switch cases. Fix
proposed by Chris.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28947 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib')
-rw-r--r-- | lib/Transforms/Scalar/LoopUnswitch.cpp | 11 |
1 files changed, 6 insertions, 5 deletions
diff --git a/lib/Transforms/Scalar/LoopUnswitch.cpp b/lib/Transforms/Scalar/LoopUnswitch.cpp index 222d1782bd..d33dcb7c0b 100644 --- a/lib/Transforms/Scalar/LoopUnswitch.cpp +++ b/lib/Transforms/Scalar/LoopUnswitch.cpp @@ -971,11 +971,12 @@ void LoopUnswitch::RewriteLoopBodyWithConditionConstant(Loop *L, Value *LIC, Old->getTerminator()->eraseFromParent(); - for (BasicBlock::iterator II = SI->getSuccessor(i)->begin(), - IE = SI->getSuccessor(i)->end(); II != IE; ++II) { - if (isa<PHINode>(*II)) { - (*II).replaceUsesOfWith(Split, Old); - } + + PHINode *PN; + for (BasicBlock::iterator II = SI->getSuccessor(i)->begin(); + (PN = dyn_cast<PHINode>(II)); ++II) { + Value *InVal = PN->removeIncomingValue(Split, false); + PN->addIncoming(InVal, Old); } SI->removeCase(i); |