https://gcc.gnu.org/bugzilla/show_bug.cgi?id=112281
--- Comment #13 from GCC Commits <cvs-commit at gcc dot gnu.org> --- The releases/gcc-13 branch has been updated by Richard Biener <rgue...@gcc.gnu.org>: https://gcc.gnu.org/g:0b409fc34e9b1ff7f90456e73128e38970c1532b commit r13-8720-g0b409fc34e9b1ff7f90456e73128e38970c1532b Author: Richard Biener <rguent...@suse.de> Date: Mon Nov 20 13:39:52 2023 +0100 tree-optimization/112281 - loop distribution and zero dependence distances The following fixes an omission in dependence testing for loop distribution. When the overall dependence distance is not zero but the dependence direction in the innermost common loop is = there is a conflict between the partitions and we have to merge them. PR tree-optimization/112281 * tree-loop-distribution.cc (loop_distribution::pg_add_dependence_edges): For = in the innermost common loop record a partition conflict. * gcc.dg/torture/pr112281-1.c: New testcase. * gcc.dg/torture/pr112281-2.c: Likewise. (cherry picked from commit 3b34902417259031823bff7f853f615a60464bbd)
