Add an option to enable prototype "fission" capabilities and debug changes.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@167765 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/AsmPrinter/DwarfDebug.h b/lib/CodeGen/AsmPrinter/DwarfDebug.h
index 61d9a51..1188ffa 100644
--- a/lib/CodeGen/AsmPrinter/DwarfDebug.h
+++ b/lib/CodeGen/AsmPrinter/DwarfDebug.h
@@ -319,6 +319,7 @@
   // A holder for the DarwinGDBCompat flag so that the compile unit can use it.
   bool isDarwinGDBCompat;
   bool hasDwarfAccelTables;
+  bool hasDwarfFission;
 private:
 
   /// assignAbbrevNumber - Define a unique number for the abbreviation.
@@ -537,6 +538,7 @@
   /// output to the limitations of darwin gdb.
   bool useDarwinGDBCompat() { return isDarwinGDBCompat; }
   bool useDwarfAccelTables() { return hasDwarfAccelTables; }
+  bool useDwarfFission() { return hasDwarfFission; }
 };
 } // End of namespace llvm