https://gcc.gnu.org/bugzilla/show_bug.cgi?id=116713
pietro <pietro.gcc at sociotechnical dot xyz> changed:
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--- Comment #1 from pietro <pietro.gcc at sociotechnical dot xyz> ---
(In reply to Oleg Endo from comment #0)
> In some cases __builtin_prefetch will be eliminated and thus it can't be
> reliably used for SH4 store queue writes.
>
> An example here: https://godbolt.org/z/TGsed8cnq
It doesn't get eliminated on SH2A/SH3/SH4 on that example. It does get moved to
before the writes to sq_part between O1 and O2 though:
https://godbolt.org/z/sP8PPKz3K
