[OpenCL] Improve destructor support in C++ for OpenCL

This re-applies r366422 with a fix for Bug PR42665 and a new regression
test.

llvm-svn: 366670
diff --git a/clang/lib/CodeGen/CodeGenFunction.h b/clang/lib/CodeGen/CodeGenFunction.h
index 06ef2df..c3060d1 100644
--- a/clang/lib/CodeGen/CodeGenFunction.h
+++ b/clang/lib/CodeGen/CodeGenFunction.h
@@ -675,7 +675,8 @@
   /// PushDestructorCleanup - Push a cleanup to call the
   /// complete-object variant of the given destructor on the object at
   /// the given address.
-  void PushDestructorCleanup(const CXXDestructorDecl *Dtor, Address Addr);
+  void PushDestructorCleanup(const CXXDestructorDecl *Dtor, QualType T,
+                             Address Addr);
 
   /// PopCleanupBlock - Will pop the cleanup entry on the stack and
   /// process all branch fixups.
@@ -2554,8 +2555,8 @@
   static Destroyer destroyCXXObject;
 
   void EmitCXXDestructorCall(const CXXDestructorDecl *D, CXXDtorType Type,
-                             bool ForVirtualBase, bool Delegating,
-                             Address This);
+                             bool ForVirtualBase, bool Delegating, Address This,
+                             QualType ThisTy);
 
   void EmitNewArrayInitializer(const CXXNewExpr *E, QualType elementType,
                                llvm::Type *ElementTy, Address NewPtr,
@@ -3677,9 +3678,9 @@
                               llvm::Value *ImplicitParam,
                               QualType ImplicitParamTy, const CallExpr *E,
                               CallArgList *RtlArgs);
-  RValue EmitCXXDestructorCall(GlobalDecl Dtor,
-                               const CGCallee &Callee,
-                               llvm::Value *This, llvm::Value *ImplicitParam,
+  RValue EmitCXXDestructorCall(GlobalDecl Dtor, const CGCallee &Callee,
+                               llvm::Value *This, QualType ThisTy,
+                               llvm::Value *ImplicitParam,
                                QualType ImplicitParamTy, const CallExpr *E);
   RValue EmitCXXMemberCallExpr(const CXXMemberCallExpr *E,
                                ReturnValueSlot ReturnValue);