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From: "cvs-commit at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/116380] [13/14/15 regression] ICE on valid
 code at -O3 with "-fno-tree-scev-cprop" on x86_64-linux-gnu: Segmentation
 fault
Date: Wed, 21 Aug 2024 12:48:11 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D116380

--- Comment #5 from GCC Commits <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Richard Biener <rguenth@gcc.gnu.org>:

https://gcc.gnu.org/g:af0d2d95a5f767d92bd64f959679fb4612247b0b

commit r15-3069-gaf0d2d95a5f767d92bd64f959679fb4612247b0b
Author: Richard Biener <rguenther@suse.de>
Date:   Wed Aug 21 13:56:40 2024 +0200

    tree-optimization/116380 - bogus SSA update with loop distribution

    When updating LC PHIs after copying loops we have to handle defs
    defined outside of the loop appropriately (by not setting them to
    NULL ...).  This mimics how we handle this in the SSA updating
    code of the vectorizer.

            PR tree-optimization/116380
            * tree-loop-distribution.cc (copy_loop_before): Handle
            out-of-loop defs appropriately.

            * gcc.dg/torture/pr116380.c: New testcase.=