r149779 - in /trunk/gcc: ChangeLog combine.c

[nemet@gcc.gnu.org]

Author: nemet
Date: Sat Jul 18 21:48:19 2009
New Revision: 149779

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=149779
Log:
	* combine.c (try_widen_shift_mode) <LSHIFTRT>: Allow widening if the
	high-order bits are zero.

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