https://gcc.gnu.org/bugzilla/show_bug.cgi?id=113373
--- Comment #8 from GCC 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:86f3cbdaa6f60eaff1cdb4ab2f1a9bc796b67207 commit r14-8330-g86f3cbdaa6f60eaff1cdb4ab2f1a9bc796b67207 Author: Richard Biener <rguent...@suse.de> Date: Fri Jan 19 13:55:09 2024 +0100 tree-optimization/113373 - add missing LC PHIs for live operations The following makes reduction epilogue code generation happy by properly adding LC PHIs to the exit blocks for multiple exit vectorized loops. Some refactoring might make the flow easier to follow but I've refrained from doing that with this patch. I've kept some fixes in reduction epilogue generation from the earlier attempt fixing this PR. PR tree-optimization/113373 * tree-vect-loop-manip.cc (slpeel_tree_duplicate_loop_to_edge_cfg): Create LC PHIs in the exit blocks where necessary. * tree-vect-loop.cc (vectorizable_live_operation): Do not try to handle missing LC PHIs. (find_connected_edge): Remove. (vect_create_epilog_for_reduction): Cleanup use of auto_vec. * gcc.dg/vect/vect-early-break_104-pr113373.c: New testcase.
