r114483 - in /trunk/gcc: ChangeLog fold-const.c...

[rguenth@gcc.gnu.org]

Author: rguenth
Date: Thu Jun  8 08:49:19 2006
New Revision: 114483

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=114483
Log:
2006-06-08  Richard Guenther  <rguenther@suse.de>

	PR middle-end/27116
	* fold-const.c (negate_expr_p): We can negate BIT_NOT_EXPR
	only, if overflow is defined and not trapping.
	(negate_expr): Likewise.

	* gcc.dg/torture/pr27116.c: New testcase.
	* gcc.dg/pr15785-1.c: Remove test for invalid transformation.

Added:
    trunk/gcc/testsuite/gcc.dg/torture/pr27116.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/fold-const.c
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/testsuite/gcc.dg/pr15785-1.c