Do not require variable debug info nodes to have a compile unit.
For implicit decls like "self" and "_cmd" in ObjC, these decls
should not have a location.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@70964 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Analysis/DebugInfo.cpp b/lib/Analysis/DebugInfo.cpp
index 61e8a10..5d1f7cb 100644
--- a/lib/Analysis/DebugInfo.cpp
+++ b/lib/Analysis/DebugInfo.cpp
@@ -295,7 +295,7 @@
     return false;
 
   DICompileUnit CU = getCompileUnit();
-  if (!CU.Verify()) 
+  if (!CU.isNull() && !CU.Verify()) 
     return false;
 
   DIType Ty = getType();
@@ -320,7 +320,6 @@
   if (!Ty.Verify())
     return false;
 
-
   return true;
 }