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when a match fails and we have to rollback, make sure to keep 'N' in

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sync with the top of stack.  This fixes a bunch of failures on larger
testcases.

llvm-svn: 96732
This commit is contained in:
Chris Lattner 2010-02-21 07:55:48 +00:00
parent e8842eb260
commit c7fac8c8b2
1 changed files with 1 additions and 0 deletions
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include/llvm/CodeGen/DAGISelHeader.h
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@ -760,6 +760,7 @@ SDNode *SelectCodeCommon(SDNode *NodeToMatch, const unsigned char *MatcherTable,
const MatchScope &LastScope = MatchScopes.back();
RecordedNodes.resize(LastScope.NumRecordedNodes);
NodeStack.resize(LastScope.NodeStackSize);
N = NodeStack.back();
if (LastScope.NumMatchedMemRefs != MatchedMemRefs.size())
MatchedMemRefs.resize(LastScope.NumMatchedMemRefs);