r218241 - in /trunk/gcc: ChangeLog combine.c

[segher@gcc.gnu.org]

Author: segher
Date: Mon Dec  1 18:26:20 2014
New Revision: 218241

URL: https://gcc.gnu.org/viewcvs?rev=218241&root=gcc&view=rev
Log:
	* combine.c (struct insn_link): New field `regno'.
	(alloc_insn_link): New parameter `regno'.  Use it.
	(find_single_use): Check the new field.
	(can_combine_def_p, can_combine_use_p): New functions.  Split
	off from ...
	(create_log_links): ... here.  Correct data type of `regno'.
	Adjust call to alloc_insn_link.
	(adjust_for_new_dest): Find regno, use it in call to
	alloc_insn_link.
	(try_combine): Check reg_used_between_p when combining a PARALLEL
	as earlier insn.  Adjust call to alloc_insn_link.
	(distribute_links): Check the new field.

Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/combine.c