[llvm-commits] [llvm] r131152 - /llvm/trunk/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp

[Stuart Hastings]

Author: stuart
Date: Tue May 10 16:20:03 2011
New Revision: 131152

URL: http://llvm.org/viewvc/llvm-project?rev=131152&view=rev
Log:
Correctly walk through nested and adjacent CALLSEQ_START nodes.  No
test case; I've only seen this on a release branch, and I can't get it
to reproduce on trunk.  rdar://problem/7662569

Modified:
    llvm/trunk/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp

Modified: llvm/trunk/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp?rev=131152&r1=131151&r2=131152&view=diff
==============================================================================
--- llvm/trunk/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp (original)
+++ llvm/trunk/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp Tue May 10 16:20:03 2011
@@ -324,6 +324,7 @@
     case ISD::CALLSEQ_START:
       if (!nested)
         return Node;
+      Node = Node->getOperand(0).getNode();
       nested--;
       break;
     case ISD::CALLSEQ_END:
@@ -331,7 +332,7 @@
       break;
     }
   }
-  return 0;
+  return (Node->getOpcode() == ISD::CALLSEQ_START) ? Node : 0;
 }
 
 /// LegalizeAllNodesNotLeadingTo - Recursively walk the uses of N, looking to