[Bug tree-optimization/126852] [17 Regression] ICE on valid code at -O3 with "-mavx2 -fno-vect-cost-model -fno-tree-pre" on x86_64-linux-gnu: verify_ssa failed

"cvs-commit at gcc dot gnu.org via Gcc-bugs" <[email protected]> Fri, 14 Aug 2026 09:58:07 +0000

Newsgroups	gmane.comp.gcc.bugs
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=126852

--- Comment #3 from GCC Commits <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Richard Biener <[email protected]>:

https://gcc.gnu.org/g:6a000bf53e6f42cff3774822227f47e39d2b76d5

commit r17-3282-g6a000bf53e6f42cff3774822227f47e39d2b76d5
Author: Richard Biener <[email protected]>
Date:   Fri Aug 14 10:57:17 2026 +0200

    tree-optimization/126852 - verify SLP schedule also for PHIs

    We have to verify the PHI argument nodes insertion place dominates
    the PHI argument edge sources.

            PR tree-optimization/126852
            * tree-vect-slp.cc (vect_schedule_slp_node): Verify schedule
            for PHIs.

            * gcc.dg/vect/bb-slp-pr126852.c: New testcase.