alpha.c (direct_return): Move down after struct machine_function definition...

alpha.c (direct_return): Move down after struct machine_function definition...

	* config/alpha/alpha.c (direct_return): Move down after
	struct machine_function definition; use saved frame_size;
	return bool.
	(struct machine_function): Add sa_mask, sa_size, frame_size.
	(alpha_sa_mask, alpha_sa_size, compute_frame_size): Merge into ...
	(alpha_compute_frame_layout): ... new function.
	(TARGET_COMPUTE_FRAME_LAYOUT): New.
	(alpha_initial_elimination_offset): Use saved sa_size.
	(alpha_vms_initial_elimination_offset): Likewise.
	(alpha_vms_can_eliminate): Remove alpha_sa_size call.
	(alpha_expand_prologue): Use saved frame data.  Merge integer
	and fp register save loops.
	(alpha_expand_epilogue): Likewise.
	(alpha_start_function): Use saved frame data.
	* config/alpha/alpha-protos.h (direct_return): Update.
	(alpha_sa_size): Remove.

From-SVN: r271970