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Ignore dbg info intrinsics when folding conditional branch to

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conditional branch predecessors.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@65509 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Zhou Sheng
2009-02-26 06:56:37 +00:00
parent 677c2c2a62
commit a8d57fe96b
2 changed files with 75 additions and 1 deletions
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lib/Transforms/Utils/SimplifyCFG.cpp
+5 -1
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@@ -1592,7 +1592,11 @@ static bool SimplifyCondBranchToCondBranch(BranchInst *PBI, BranchInst *BI) {
// If this is a conditional branch in an empty block, and if any
// predecessors is a conditional branch to one of our destinations,
// fold the conditions into logical ops and one cond br.
if (&BB->front() != BI)
BasicBlock::iterator BBI = BB->begin();
// Ignore dbg intrinsics.
while (isa<DbgInfoIntrinsic>(BBI))
++BBI;
if (&*BBI != BI)
return false;