d: Remove handling of deleting GC allocated classes.

Now that the `delete' keyword has been removed from the front-end, only
compiler-generated uses of DeleteExp reach the code generator via the
auto-destruction of `scope class' variables.

The run-time library helpers that previously were used to delete GC
class objects can now be removed from the compiler.

gcc/d/ChangeLog:

	* expr.cc (ExprVisitor::visit (DeleteExp *)): Remove handling of
	deleting GC allocated classes.
	* runtime.def (DELCLASS): Remove.
	(DELINTERFACE): Remove.

1 files changed, 6 insertions, 18 deletions

diff --git a/gcc/d/expr.cc b/gcc/d/expr.cc
index d5e4df7..2a7fb69 100644
--- a/gcc/d/expr.cc
+++ b/gcc/d/expr.cc
@@ -1438,28 +1438,16 @@ public:
       {
 	/* For class object references, if there is a destructor for that class,
 	   the destructor is called for the object instance.  */
-	libcall_fn libcall;
+	gcc_assert (e->e1->op == EXP::variable);
 
-	if (e->e1->op == EXP::variable)
-	  {
-	    VarDeclaration *v = e->e1->isVarExp ()->var->isVarDeclaration ();
-	    if (v && v->onstack)
-	      {
-		libcall = tb1->isClassHandle ()->isInterfaceDeclaration ()
-		  ? LIBCALL_CALLINTERFACEFINALIZER : LIBCALL_CALLFINALIZER;
+	VarDeclaration *v = e->e1->isVarExp ()->var->isVarDeclaration ();
+	gcc_assert (v && v->onstack);
 
-		this->result_ = build_libcall (libcall, Type::tvoid, 1, t1);
-		return;
-	      }
-	  }
+	libcall_fn libcall = tb1->isClassHandle ()->isInterfaceDeclaration ()
+	  ? LIBCALL_CALLINTERFACEFINALIZER : LIBCALL_CALLFINALIZER;
 
-	/* Otherwise, the garbage collector is called to immediately free the
-	   memory allocated for the class instance.  */
-	libcall = tb1->isClassHandle ()->isInterfaceDeclaration ()
-	  ? LIBCALL_DELINTERFACE : LIBCALL_DELCLASS;
-
-	t1 = build_address (t1);
 	this->result_ = build_libcall (libcall, Type::tvoid, 1, t1);
+	return;
       }
     else
       {