r130097 - in /trunk/gcc: ChangeLog fold-const.c...

[rguenth@gcc.gnu.org]

Author: rguenth
Date: Mon Nov 12 13:24:06 2007
New Revision: 130097

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=130097
Log:
2007-11-12  Richard Guenther  <rguenther@suse.de>

	PR middle-end/34027
	* fold-const.c (fold_binary): Fold n - (n / m) * m to n % m.
	(fold_binary): Fold unsinged FLOOR_DIV_EXPR to TRUNC_DIV_EXPR.

	* gcc.dg/pr34027-1.c: New testcase.
	* gcc.dg/pr34027-2.c: Likewise.

Added:
    trunk/gcc/testsuite/gcc.dg/pr34027-1.c
    trunk/gcc/testsuite/gcc.dg/pr34027-2.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/fold-const.c
    trunk/gcc/testsuite/ChangeLog