r184548 - in /trunk/gcc: ChangeLog fold-const.c...

[rguenth@gcc.gnu.org]

Author: rguenth
Date: Fri Feb 24 11:14:17 2012
New Revision: 184548

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=184548
Log:
2012-02-24  Richard Guenther  <rguenther@suse.de>

	PR middle-end/52355
	* fold-const.c (fold_addr_of_array_ref_difference): New function.
	(fold_binary_loc): Use it to extend the existing &a[i] - &a[j]
	folding.

	* gcc.dg/pr52355.c: New testcase.

Added:
    trunk/gcc/testsuite/gcc.dg/pr52355.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/fold-const.c
    trunk/gcc/testsuite/ChangeLog