Parse @encode expressions.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@41273 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/Sema/Sema.h b/Sema/Sema.h
index 42beb84..5056335 100644
--- a/Sema/Sema.h
+++ b/Sema/Sema.h
@@ -326,6 +326,11 @@
   
   // ParseObjCStringLiteral - Parse Objective-C string literals.
   virtual ExprResult ParseObjCStringLiteral(ExprTy *string);
+  virtual ExprResult ParseObjCEncodeExpression(SourceLocation AtLoc,
+                                               SourceLocation LParenLoc,
+                                               TypeTy *Ty,
+                                               SourceLocation RParenLoc);
+  
 private:
   // UsualUnaryConversions - promotes integers (C99 6.3.1.1p2) and converts
   // functions and arrays to their respective pointers (C99 6.3.2.1).