------- Comment #2 from sayle at gcc dot gnu dot org 2006-02-18 05:22 ------- Subject: Bug 25600
Author: sayle Date: Sat Feb 18 05:22:46 2006 New Revision: 111226 URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=111226 Log: PR middle-end/25600 * fold-const.c (fold_binary): Fold (X >> C) != 0 into X < 0 when C is one less than the width of X (and related transformations). * simplify_rtx.c (simplify_unary_operation_1): Transform (neg (lt x 0)) into either (ashiftrt X C) or (lshiftrt X C) depending on STORE_FLAG_VALUE, were C is one less then the width of X. Modified: trunk/gcc/ChangeLog trunk/gcc/fold-const.c trunk/gcc/simplify-rtx.c -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=25600
