handle optional in flags that aren't present.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@96731 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/include/llvm/CodeGen/DAGISelHeader.h b/include/llvm/CodeGen/DAGISelHeader.h
index 7e6728ea807e56143a9685f6e467ba923b72d177..1e808ed217dc0a40decee0f28c4a5e0dedd09ee7 100644 (file)
--- a/include/llvm/CodeGen/DAGISelHeader.h
+++ b/include/llvm/CodeGen/DAGISelHeader.h
@@ -672,7 +672,7 @@ SDNode *SelectCodeCommon(SDNode *NodeToMatch, const unsigned char *MatcherTable,
       // If this has chain/flag inputs, add them.
       if (EmitNodeInfo & OPFL_Chain)
         Ops.push_back(InputChain);
-      if (EmitNodeInfo & OPFL_Flag)
+      if ((EmitNodeInfo & OPFL_Flag) && InputFlag.getNode() != 0)
         Ops.push_back(InputFlag);
       
       // Create the node.