rs6000.h (FUNCTION_ARG, [...]): Delete.

rs6000.h (FUNCTION_ARG, [...]): Delete.

	* config/rs6000/rs6000.h (FUNCTION_ARG, FUNCTION_ARG_ADVANCE): Delete.
	* config/rs6000/rs6000-protos.h (function_arg_advance): Delete.
	(function_arg): Delete.
	(function_arg_boundary): Take a const_tree.
	* config/rs6000/rs6000.c (function_arg_boundary): Likewise.
	(rs6000_spe_function_arg): Likewise.
	(rs6000_parm_start): Likewise.
	(rs6000_arg_size): Likewise.
	(rs6000_darwin64_record_arg_advance_recurse): Likewise.
	(rs6000_darwin64_record_arg): Likewise.  Take a bool instead of
	an int.
	(rs6000_mixed_function_arg): Likewise.
	(function_arg): Rename to...
	(rs6000_function_arg): ...this.
	(function_arg_advance): Rename to...
	(rs6000_function_arg_advance_1): ...this
	(rs6000_function_arg_advance): New function.  Call it.
	(setup_incoming_varargs): Call rs6000_function_arg_advance_1.
	(rs6000_return_in_memory): Adjust call to rs6000_darwin64_record_arg.
	(rs6000_function_value): Likewise.
	(TARGET_FUNCTION_ARG, TARGET_FUNCTION_ARG_ADVANCE): Define.

From-SVN: r163586