Do not construct DIE for already processed MDNode.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@107237 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/AsmPrinter/DwarfDebug.cpp b/lib/CodeGen/AsmPrinter/DwarfDebug.cpp
index 73aa8d8..50c0fea 100644
--- a/lib/CodeGen/AsmPrinter/DwarfDebug.cpp
+++ b/lib/CodeGen/AsmPrinter/DwarfDebug.cpp
@@ -2766,7 +2766,8 @@
           }
         }
       }
-      constructScopeDIE(*AI);
+      if (ProcessedSPNodes.count((*AI)->getScopeNode()) == 0)
+        constructScopeDIE(*AI);
     }
     
     DIE *CurFnDIE = constructScopeDIE(CurrentFnDbgScope);