[llvm-dev] PostRAScheduler

[Ryan Taylor via llvm-dev]

Yes thanks, I saw that. I missed the target dependent pass.

On Thu, Jun 21, 2018, 3:17 AM Nicolai Hähnle via llvm-dev <
llvm-dev at lists.llvm.org> wrote:

> On 20.06.2018 17:51, Ryan Taylor via llvm-dev wrote:
> > Is there any specific documentation on this? Is there a point of contact
> > for this file that I might bug?
> >
> > So I have an instruction that needs noops inserted and it appears that
> > the noops are being inserted in the EmitSchedule function of the
> > PostRAScheduler. From the loop in EmitSchedule it looks like it's
> > inserting noops whenever SUnit is NULL. I don't see anything in the DAG
> > that appears odd or any empty nodes, how are these NULL SUnits inserted
> > into the Sequence?
>
> I'm not an expert on this, but I believe they are inserted via the
> target's ScheduleHazardRecognizer implementation.
>
> Cheers,
> Nicolai
>
> >
> > Thanks,
> >
> > Ryan
> >
> >
> > _______________________________________________
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> > llvm-dev at lists.llvm.org
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> >
>
>
> --
> Lerne, wie die Welt wirklich ist,
> Aber vergiss niemals, wie sie sein sollte.
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