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/CodeGenFunction.h b/lib/CodeGen/CodeGenFunction.h
index 4342332..e96b815 100644
--- a/lib/CodeGen/CodeGenFunction.h
+++ b/lib/CodeGen/CodeGenFunction.h
@@ -454,6 +454,10 @@
   // of a variable length array type.
   llvm::Value *GetVLASize(const VariableArrayType *);
 
+  /// LoadCXXThis - Load the value of 'this'. This function is only valid while
+  /// generating code for an C++ member function.
+  llvm::Value *LoadCXXThis();
+  
   //===--------------------------------------------------------------------===//
   //                            Declaration Emission
   //===--------------------------------------------------------------------===//