Simplify code and add comments, in code that generate debug info for constant integer globals, based on Chris's feedback.

llvm-svn: 110694
diff --git a/clang/lib/CodeGen/CodeGenFunction.h b/clang/lib/CodeGen/CodeGenFunction.h
index e0673d9..325940d 100644
--- a/clang/lib/CodeGen/CodeGenFunction.h
+++ b/clang/lib/CodeGen/CodeGenFunction.h
@@ -1373,7 +1373,7 @@
   LValue EmitStmtExprLValue(const StmtExpr *E);
   LValue EmitPointerToDataMemberBinaryExpr(const BinaryOperator *E);
   LValue EmitObjCSelectorLValue(const ObjCSelectorExpr *E);
-  void   EmitDeclRefExprDbgValue(const DeclRefExpr *E, const APValue &AV);
+  void   EmitDeclRefExprDbgValue(const DeclRefExpr *E, llvm::ConstantInt *Init);
   //===--------------------------------------------------------------------===//
   //                         Scalar Expression Emission
   //===--------------------------------------------------------------------===//