Re: arcbios_calls.S data hazards

[Steve Rumble <stephen.m.rumble%gmail.com@localhost>]

On Tue, Dec 9, 2025 at 1:09 PM Maciej W. Rozycki <macro%orcam.me.uk@localhost> wrote:
>
> On Mon, 8 Dec 2025, Steve Rumble wrote:
>
> > Also, since we're invoking via gcc (-x assembler-with-cpp) and aren't
> > specifying an optimisation level, it looks like gcc passes its -O0
> > default into as, overriding as' -O2 default. If I pass -O2 to either
> > gcc or into as specifically (via -Wa), as does appear to fill other
> > delay slots where it can. I imagine we're producing suboptimal output
> > where reordering is currently being used.
>
>  Perhaps it's worth considering then?

Yes, though I think it's low priority. fp emulation is the only
significant use of reordering I found.

Steve