[Bug tree-optimization/126404] [16 Regression] ICE at -O2/3 on aarch64 during GIMPLE pass: vect

"cvs-commit at gcc dot gnu.org via Gcc-bugs" <[email protected]> Thu, 30 Jul 2026 08:39:23 +0000

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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=126404

--- Comment #8 from GCC Commits <cvs-commit at gcc dot gnu.org> ---
The releases/gcc-16 branch has been updated by Richard Biener
<[email protected]>:

https://gcc.gnu.org/g:8801728ac99a19763df4851e682f1cacfe7975fc

commit r16-9457-g8801728ac99a19763df4851e682f1cacfe7975fc
Author: Richard Biener <[email protected]>
Date:   Mon Jul 27 19:24:32 2026 +0200

    tree-optimization/126404 - fixup conversion detection in reductions

    The following makes sure to check the pattern stmt against being a
    conversion to skip but the original stmt for a mismatch in code.

            PR tree-optimization/126404
            * tree-vect-slp.cc (vect_analyze_slp_reduc_chain): Fixup
            conversion detection.

            * gcc.dg/vect/vect-pr126404.c: New testcase.

    (cherry picked from commit 3cd23c9fd60854cd9d160ce3b341a819025bfeb8)