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Correctly walk through nested and adjacent CALLSEQ_START nodes. No

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test case; I've only seen this on a release branch, and I can't get it
to reproduce on trunk.  rdar://problem/7662569


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@131152 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Stuart Hastings 2011-05-10 21:20:03 +00:00
parent 6253c7ca60
commit d673057c96
1 changed files with 2 additions and 1 deletions
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3
lib/CodeGen/SelectionDAG/LegalizeDAG.cpp
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@ -324,6 +324,7 @@ static SDNode *FindCallStartFromCallEnd(SDNode *Node) {
case ISD::CALLSEQ_START:
if (!nested)
return Node;
Node = Node->getOperand(0).getNode();
nested--;
break;
case ISD::CALLSEQ_END:
@ -331,7 +332,7 @@ static SDNode *FindCallStartFromCallEnd(SDNode *Node) {
break;
}
}
return 0;
return (Node->getOpcode() == ISD::CALLSEQ_START) ? Node : 0;
}
/// LegalizeAllNodesNotLeadingTo - Recursively walk the uses of N, looking to