r151022 - in /trunk/gcc: ChangeLog fwprop.c

[amodra@gcc.gnu.org]

Author: amodra
Date: Sun Aug 23 02:57:26 2009
New Revision: 151022

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=151022
Log:
	PR target/41081
	* fwprop.c (try_fwprop_subst): Allow multiple sets.
	(get_reg_use_in): New function.
	(forward_propagate_subreg): Propagate through subreg of zero_extend
	or sign_extend.


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