https://gcc.gnu.org/bugzilla/show_bug.cgi?id=106249
--- Comment #6 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:c479c40f8c8fee0fb70e8a365b61c55739f448e1 commit r13-1653-gc479c40f8c8fee0fb70e8a365b61c55739f448e1 Author: Richard Biener <rguent...@suse.de> Date: Wed Jul 13 08:27:57 2022 +0200 tree-optimization/106249 - unroll-and-jam and LC SSA upate When I delayed the LC SSA update in unroll-and-jam this exposed an issue that tree_transform_and_unroll_loop does a full function LC SSA verification when new_loop is NULL (when it doesn't need to do versioning). That wasn't intended. I also took the chance to make the versioning in tree_transform_and_unroll_loop use TODO_update_ssa_nophi for the loop versioning SSA update which I somehow missed earlier. PR tree-optimization/106249 * tree-ssa-loop-manip.cc (tree_transform_and_unroll_loop): Only verify LC SSA of the new_loop if we created it. Use TODO_update_ssa_nophi for the SSA update after versioning the loop. * gcc.dg/pr106249.c: New testcase.
