+ treat_class_rvalues_as_lvalues,
+ allow_cast_as_lvalue);
+
+ case NOP_EXPR:
+ /* If expression doesn't change the type, we consider it as an
+ lvalue even when cast_as_lvalue extension isn't selected.
+ That's because parts of the compiler are alleged to be sloppy
+ about sticking in NOP_EXPR node for no good reason. */
+ if (allow_cast_as_lvalue ||
+ same_type_p (TYPE_MAIN_VARIANT (TREE_TYPE (ref)),
+ TYPE_MAIN_VARIANT (TREE_TYPE (TREE_OPERAND (ref, 0)))))
+ return lvalue_p_1 (TREE_OPERAND (ref, 0),
+ treat_class_rvalues_as_lvalues,
+ allow_cast_as_lvalue);
+ else
+ return clk_none;