https://gcc.gnu.org/bugzilla/show_bug.cgi?id=112281
--- Comment #14 from GCC Commits <cvs-commit at gcc dot gnu.org> --- The releases/gcc-12 branch has been updated by Richard Biener <rgue...@gcc.gnu.org>: https://gcc.gnu.org/g:5db4b5449df8f59a61438f8db1836dbc9b53f02e commit r12-10456-g5db4b5449df8f59a61438f8db1836dbc9b53f02e 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)
