https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84746
Richard Biener <rguenth at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Priority|P1 |P2 Known to work| |8.0 Target Milestone|8.0 |7.4 Summary|[8 Regression] ICE on valid |[7 Regression] ICE on valid |code at -O2 and -O3: |code at -O2 and -O3: |Segmentation fault |Segmentation fault Priority|P2 |P1 Known to work|8.0 | Target Milestone|7.4 |8.0 Summary|[7 Regression] ICE on valid |[8 Regression] ICE on valid |code at -O2 and -O3: |code at -O2 and -O3: |Segmentation fault |Segmentation fault --- Comment #8 from Richard Biener <rguenth at gcc dot gnu.org> --- Fixed on trunk, I'm eventually going to backport a variant of this. --- Comment #9 from Richard Biener <rguenth at gcc dot gnu.org> --- Author: rguenth Date: Thu Mar 8 09:23:44 2018 New Revision: 258361 URL: https://gcc.gnu.org/viewcvs?rev=258361&root=gcc&view=rev Log: 2018-03-08 Richard Biener <rguent...@suse.de> PR tree-optimization/84746 * tree-ssa-pre.c (find_leader_in_sets): Deal with SET1 being NULL. (phi_translate): Pass in destination ANTIC_OUT set. (phi_translate_1): Likewise. For a simplified result lookup a leader in ANTIC_OUT and AVAIL_OUT, not the ANTIC_IN sets. (phi_translate_set): Adjust. (do_pre_regular_insertion): Likewise. (do_pre_partial_partial_insertion): Likewise. * gcc.dg/torture/pr84746.c: New testcase. Added: trunk/gcc/testsuite/gcc.dg/torture/pr84746.c Modified: trunk/gcc/ChangeLog trunk/gcc/testsuite/ChangeLog trunk/gcc/tree-ssa-pre.c