https://gcc.gnu.org/bugzilla/show_bug.cgi?id=114435

--- Comment #10 from Richard Biener <rguenth at gcc dot gnu.org> ---
(In reply to Richard Biener from comment #9)
> So the "pcom messes up SLP" part should be fixed now.  The pass dependence
> of invariant/store motion and unswitching (and likely also loop splitting) is
> something different.  We may want to track this in a seprate bug.

Note there's a conditional (on graphite) LIM pass after high-level loop opts,
it might be an option to turn it into an unconditional instance.

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