r179284 - in /trunk/gcc: ChangeLog ifcvt.c

[law@gcc.gnu.org]

Author: law
Date: Tue Sep 27 16:49:17 2011
New Revision: 179284

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=179284
Log:
	* ifcvt.c (cheap_bb_rtx_cost_p): Add SCALE argument.  Scale
	non-jumping insns by REG_BR_PROB_BASE and the maximum cost
	by SCALE.
	(find_if_case_1): Use the probability of the THEN clause when
	determining if speculation is profitable.
	(find_if_case_2): Similarly for the ELSE clause.



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