* gcse.c (modify_mem_list): Convert to an array of VECs.
	(canon_modify_mem_list, compute_transp): Tweak formatting.
	(alloc_gcse_mem): Likewise.  Adjust for modify_mem_list change.
	(load_killed_in_block_p): Likewise.
	(record_last_mem_set_info): Likewise.
	(clear_modify_mem_tables): Likewise.

From-SVN: r171992