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Avoid creating duplicate CFG edges in the IfConversion pass.

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Patch by Stefan Hepp.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@173395 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Jakob Stoklund Olesen 2013-01-24 23:59:08 +00:00
parent b3755e7fa2
commit dd4fc446b5
1 changed files with 1 additions and 1 deletions
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2
lib/CodeGen/IfConversion.cpp
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@ -1557,7 +1557,7 @@ void IfConverter::MergeBlocks(BBInfo &ToBBI, BBInfo &FromBBI, bool AddEdges) {
if (Succ == FallThrough)
continue;
FromBBI.BB->removeSuccessor(Succ);
if (AddEdges)
if (AddEdges && !ToBBI.BB->isSuccessor(Succ))
ToBBI.BB->addSuccessor(Succ);
}