implement code generation for scalar stmt expressions.

llvm-svn: 41656
diff --git a/clang/CodeGen/CodeGenFunction.h b/clang/CodeGen/CodeGenFunction.h
index af8d80b..a597f43 100644
--- a/clang/CodeGen/CodeGenFunction.h
+++ b/clang/CodeGen/CodeGenFunction.h
@@ -265,7 +265,7 @@
   //===--------------------------------------------------------------------===//
 
   void EmitStmt(const Stmt *S);
-  void EmitCompoundStmt(const CompoundStmt &S);
+  RValue EmitCompoundStmt(const CompoundStmt &S, bool GetLast = false);
   void EmitLabelStmt(const LabelStmt &S);
   void EmitGotoStmt(const GotoStmt &S);
   void EmitIfStmt(const IfStmt &S);