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Fix PR2032. Inform the alias analysis of changes to the underlying program.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47111 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Nick Lewycky 2008-02-14 07:11:24 +00:00
parent dcd188d33f
commit 95f0ba2703
1 changed files with 2 additions and 0 deletions
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lib/Transforms/Scalar/GVN.cpp
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@ -857,6 +857,8 @@ Value *GVN::GetValueForBlock(BasicBlock *BB, LoadInst* orig,
PN->addIncoming(val, *PI);
}
AliasAnalysis& AA = getAnalysis<AliasAnalysis>();
AA.copyValue(orig, PN);
// Attempt to collapse PHI nodes that are trivially redundant
Value* v = CollapsePhi(PN);