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

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

llvm-svn: 96732

1 files changed, 1 insertions, 0 deletions

diff --git a/llvm/include/llvm/CodeGen/DAGISelHeader.h b/llvm/include/llvm/CodeGen/DAGISelHeader.h
index 1e808ed217d..42583ec18b1 100644
--- a/llvm/include/llvm/CodeGen/DAGISelHeader.h
+++ b/llvm/include/llvm/CodeGen/DAGISelHeader.h
@@ -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);