Expose a way to get the beginning of the dwarf string section.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@143920 91177308-0d34-0410-b5e6-96231b3b80d8

lib/CodeGen/AsmPrinter/DwarfDebug.h

@@ -513,6 +513,10 @@ public:
   /// getStringPoolEntry - returns an entry into the string pool with the given
   /// string text.
   MCSymbol *getStringPoolEntry(StringRef Str);
+
+  /// getDwarfStrSectionSym - returns the symbol that starts the dwarf string
+  /// section.
+  MCSymbol *getDwarfStrSectionSym();
 };
 } // End of namespace llvm