Support code generation of 'this' exprs

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@69050 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/CGExprScalar.cpp b/lib/CodeGen/CGExprScalar.cpp
index 928ad29..98c41e2 100644
--- a/lib/CodeGen/CGExprScalar.cpp
+++ b/lib/CodeGen/CGExprScalar.cpp
@@ -256,9 +256,14 @@
     return Visit(E->getSubExpr());
   }
   Value *VisitUnaryOffsetOf(const UnaryOperator *E);
+    
+  // C++
   Value *VisitCXXDefaultArgExpr(CXXDefaultArgExpr *DAE) {
     return Visit(DAE->getExpr());
   }
+  Value *VisitCXXThisExpr(CXXThisExpr *TE) {
+    return CGF.LoadCXXThis();
+  }      
     
   // Binary Operators.
   Value *EmitMul(const BinOpInfo &Ops) {