Add an accessor method to DwarfWriter to tell of debugging info should be emitted.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@65092 91177308-0d34-0410-b5e6-96231b3b80d8

include/llvm/CodeGen/DwarfWriter.h

@@ -101,6 +101,9 @@ public:
   ///
   void RecordVariable(GlobalVariable *GV, unsigned FrameIndex);
 
+  /// ShouldEmitDwarfDebug - Returns true if Dwarf debugging declarations should
+  /// be emitted.
+  bool ShouldEmitDwarfDebug() const;
 };