Under the new ABI, constructors don't return `this'.

	* cp-tree.h (warn_reorder): Declare.
	(special_function_kind): New enum.
	(global_base_init_list): Remove declaration.
	(emit_base_init): Don't return a value.
	(check_base_init): Don't declare.
	(is_aggr_typedef): Likewise.
	* decl.c (check_special_function_return_type): New function.
	(return_types): Remove.
	(grokdeclarator): Use check_special_function_return_type.
	(start_function): Don't initialize ctor_label under the new ABI.
	(finish_construtor_body): Don't create a corresponding LABEL_STMT.
	* init.c (begin_init_stmts): Move to top of file.
	(finish_init_stmts): Likewise.
	(warn_reorder): Don't declare.
	(emit_base_init): Don't create a STMT_EXPR here.  Don't return a
	value.
	(check_base_init): Remove.
	(is_aggr_typedef): Likewise.
	(build_new_1): Don't use the return value of a constructor.
	* semantics.c (setup_vtbl_ptr): Don't use the return value
	of emit_base_init.
	* typeck.c (check_return_expr): Don't magically convert return
	statements into `return this' in constructors under the new ABI.


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@33035 138bc75d-0d04-0410-961f-82ee72b054a4

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