From bef850873787b23aa1dc02520d8ab224660b4e5e Mon Sep 17 00:00:00 2001 From: Owen Anderson Date: Tue, 27 Jun 2006 22:26:09 +0000 Subject: 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 --- lib/Transforms/Scalar/LoopUnswitch.cpp | 11 ++++++----- 1 file changed, 6 insertions(+), 5 deletions(-) (limited to 'lib') 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(*II)) { - (*II).replaceUsesOfWith(Split, Old); - } + + PHINode *PN; + for (BasicBlock::iterator II = SI->getSuccessor(i)->begin(); + (PN = dyn_cast(II)); ++II) { + Value *InVal = PN->removeIncomingValue(Split, false); + PN->addIncoming(InVal, Old); } SI->removeCase(i); -- cgit v1.2.3