https://gcc.gnu.org/bugzilla/show_bug.cgi?id=109849
--- Comment #13 from CVS Commits <cvs-commit at gcc dot gnu.org> --- The master branch has been updated by Richard Biener <rgue...@gcc.gnu.org>: https://gcc.gnu.org/g:5476de2618ffb77f3a52e59e2c9f10b018329689 commit r14-1161-g5476de2618ffb77f3a52e59e2c9f10b018329689 Author: Richard Biener <rguent...@suse.de> Date: Wed May 24 12:36:28 2023 +0200 tree-optimization/109849 - fix fallout of PRE hoisting change The PR109849 fix made us no longer hoist some memory loads because of the expression set intersection. We can still avoid to compute the union by simply taking the first sets expressions and leave the pruning of expressions with values not suitable for hoisting to sorted_array_from_bitmap_set. PR tree-optimization/109849 * tree-ssa-pre.cc (do_hoist_insertion): Do not intersect expressions but take the first sets. * gcc.dg/tree-ssa/ssa-hoist-9.c: New testcase.
