r198595 - in /trunk/gcc: ChangeLog combine.c

[jakub@gcc.gnu.org]

Author: jakub
Date: Sat May  4 12:41:52 2013
New Revision: 198595

URL: http://gcc.gnu.org/viewcvs?rev=198595&root=gcc&view=rev
Log:
	* combine.c (combine_simplify_rtx) <case SUBREG>: If nonzero_bits
	on op shows all bits zero in mode of a lowpart subreg, return zero.

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