sparc.c (function_arg_partial_nregs): Never return 1 for complex integral modes whose...

sparc.c (function_arg_partial_nregs): Never return 1 for complex integral modes whose size is lesser or equal to a word.

	* config/sparc/sparc.c (function_arg_partial_nregs) [TARGET_ARCH64]:
	Never return 1 for complex integral modes whose size is lesser or
	equal to a word.
	(function_arg_pass_by_reference) [TARGET_ARCH64]: Mention CTImode
	in the comment.
	(function_arg_advance) [TARGET_ARCH64]: Don't special-case complex
	modes.
	(sparc_va_arg) [TARGET_ARCH64]: Handle any types whose is greater
	than 16 bytes by reference.

From-SVN: r73044