[Bug tree-optimization/107997] [10/11/12/13 Regression] r13-4389-gfd8dd6c0384969 probably uncovered an issue building the Linux kernel

[cvs-commit at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=107997

--- Comment #21 from GCC Commits <cvs-commit at gcc dot gnu.org> ---
The releases/gcc-14 branch has been updated by Richard Biener
<rguenth@gcc.gnu.org>:

https://gcc.gnu.org/g:cf074920bec5acafb4a1783bfe4121b8b869938d

commit r14-12439-gcf074920bec5acafb4a1783bfe4121b8b869938d
Author: Richard Biener <rguenther@suse.de>
Date:   Mon Sep 8 14:32:38 2025 +0200

    tree-optimization/121844 - IVOPTs and asm goto in latch

    When there's an asm goto in the latch of a loop we may not use
    IP_END IVs since instantiating those would (need to) split the
    latch edge which in turn invalidates IP_NORMAL position handling.
    This is a revision of the PR107997 fix.

            PR tree-optimization/107997
            PR tree-optimization/121844
            * tree-ssa-loop-ivopts.cc (allow_ip_end_pos_p): Do not allow
            IP_END for latches ending with a control stmt.
            (create_new_iv): Do not split the latch edge, instead assert
            that's not necessary.

            * gcc.dg/torture/pr121844.c: New testcase.

    (cherry picked from commit 00cd34b1046076a3272f8e8e85c97dc8f4d2ea44)