cris.c (cris_function_value, [...]): New functions.

	* config/cris/cris.c (cris_function_value, cris_libcall_value,
	cris_function_value_regno_p): New functions.
	(cris_promote_function_mode): Update comment.
	(TARGET_FUNCTION_VALUE, TARGET_LIBCALL_VALUE): Declare.
	* config/cris/cris.h: (FUNCTION_VALUE, LIBCALL_VALUE): Remove.
	(FUNCTION_VALUE_REGNO_P): Redefine, use cris_function_value_regno_p.
	* config/cris/cris-protos.h (cris_function_value_regno_p): Declare.

From-SVN: r152992