[Bug tree-optimization/103219] [12 Regression] ICE Segmentation fault at -O3 (during GIMPLE pass: unrolljam) since r12-4526-gd8edfadfc7a9795b

[cvs-commit at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=103219

--- Comment #4 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:d1ca8aeaf34a717dffd8f4a1f0333d25c7d1c904

commit r12-5264-gd1ca8aeaf34a717dffd8f4a1f0333d25c7d1c904
Author: Richard Biener <rguent...@suse.de>
Date:   Mon Nov 15 11:07:55 2021 +0100

    tree-optimization/103219 - avoid ICE in unroll-and-jam

    For no particularly good reason unroll-and-jam uses single_dom_exit
    to determine the exit for the region it wants to run VN on.  That
    happens to ICE because of the dominance restriction.  Use single_exit
    instead.

    2021-11-15  Richard Biener  <rguent...@suse.de>

            PR tree-optimization/103219
            * gimple-loop-jam.c (tree_loop_unroll_and_jam): Use single_exit
            to determine the exit for the VN region.

            * gcc.dg/torture/pr103219.c: New testcase.