https://gcc.gnu.org/bugzilla/show_bug.cgi?id=94283
--- Comment #8 from CVS Commits <cvs-commit at gcc dot gnu.org> --- The releases/gcc-9 branch has been updated by Jakub Jelinek <ja...@gcc.gnu.org>: https://gcc.gnu.org/g:8ea7970c4968517fb73f42bcca40d316adacf215 commit r9-8470-g8ea7970c4968517fb73f42bcca40d316adacf215 Author: Jakub Jelinek <ja...@redhat.com> Date: Wed Mar 25 08:08:04 2020 +0100 if-conv: Delete dead stmts backwards in ifcvt_local_dce [PR94283] > > This patch caused: > > > > gcc /home/marxin/Programming/gcc/gcc/testsuite/gcc.c-torture/compile/990625-2.c -O3 -g -fno-tree-dce -c > > during GIMPLE pass: ifcvt > > /home/marxin/Programming/gcc/gcc/testsuite/gcc.c-torture/compile/990625-2.c: In function âbroken030599â: > > /home/marxin/Programming/gcc/gcc/testsuite/gcc.c-torture/compile/990625-2.c:2:1: internal compiler error: Segmentation fault > > Likely > > /* Delete dead statements. */ > gsi = gsi_start_bb (bb); > while (!gsi_end_p (gsi)) > { > > needs to instead work back-to-front for debug stmt adjustment to work Indeed, that seems to work. 2020-03-25 Richard Biener <rguent...@suse.de> Jakub Jelinek <ja...@redhat.com> PR debug/94283 * tree-if-conv.c (ifcvt_local_dce): Delete dead statements backwards. * gcc.dg/pr94283.c: New test. Co-authored-by: Richard Biener <rguent...@suse.de>
