https://gcc.gnu.org/bugzilla/show_bug.cgi?id=121454

--- Comment #2 from ro at CeBiTec dot Uni-Bielefeld.DE <ro at CeBiTec dot 
Uni-Bielefeld.DE> ---
> I suspect this is due to
>
> commit 53f491ccd1e59fad77fb2cb30d1a58b9e5e5f63c
> Author: Richard Biener <rguent...@suse.de>
> Date:   Wed Aug 6 12:31:13 2025 +0200
>
>     tree-optimization/121405 - missed VN with aggregate copy
>
> although I haven't verified that yet.

Confirmed: with the patch reverted locally, an i686-pc-linux-gnu
bootstrap is into make check now.

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