https://gcc.gnu.org/bugzilla/show_bug.cgi?id=97623
--- Comment #22 from CVS Commits <cvs-commit at gcc dot gnu.org> --- The releases/gcc-10 branch has been updated by Richard Biener <rgue...@gcc.gnu.org>: https://gcc.gnu.org/g:eddcb627ccfbd97e025cf366cc3f3bad76211785 commit r10-9246-geddcb627ccfbd97e025cf366cc3f3bad76211785 Author: Richard Biener <rguent...@suse.de> Date: Tue Nov 3 15:03:41 2020 +0100 tree-optimization/97623 - Avoid PRE hoist insertion iteration We are not really interested in PRE opportunities exposed by hoisting but only the other way around. So this moves hoist insertion after PRE iteration finished and removes hoist insertion iteration alltogether. It also guards access to NEW_SETS properly. 2020-11-11 Richard Biener <rguent...@suse.de> PR tree-optimization/97623 * tree-ssa-pre.c (insert): Move hoist insertion after PRE insertion iteration and do not iterate it. (create_expression_by_pieces): Guard NEW_SETS access. (insert_into_preds_of_block): Likewise. * gcc.dg/tree-ssa/ssa-hoist-3.c: Adjust. * gcc.dg/tree-ssa/ssa-hoist-7.c: Likewise. * gcc.dg/tree-ssa/ssa-pre-30.c: Likewise.
