Fix PR12942: Allow two CUs to be generated from the same source file.

Thanks Eric for the review.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@169142 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/AsmPrinter/DwarfDebug.h b/lib/CodeGen/AsmPrinter/DwarfDebug.h
index 35bddee..d90a6d5 100644
--- a/lib/CodeGen/AsmPrinter/DwarfDebug.h
+++ b/lib/CodeGen/AsmPrinter/DwarfDebug.h
@@ -316,6 +316,9 @@
   // have exposed. See accessor functions below for description.
   bool IsDarwinGDBCompat;
 
+  // Counter for assigning globally unique IDs for CUs.
+  unsigned GlobalCUIndexCount;
+
   // DWARF5 Experimental Options
   bool HasDwarfAccelTables;
   bool HasDwarfFission;