* stmt.c (parse_output_constraint): New function, split out
	from ...
	(expand_asm_operands): ... here.  Use parse_output_constraint.
	* tree.h (parse_output_constraint): Declare it.

	* semantics.c (finish_asm_stmt): Mark the output operands
	to an asm addressable, if necessary.

From-SVN: r43941