Giving targets a say in match.pd

[Oleg Endo]

On Fri, 2026-06-05 at 14:40 +0200, Georg-Johann Lay via Gcc wrote:
> Am 05.06.26 um 13:55 schrieb Richard Biener:
> 
> 
> > In general I agree with Andrew that match.pd, for this kind of "optimizations",
> > needs to apply costing.
> 
> As far as I understand, that approach works at tree -> rtl lowering when
> rtx costs are available.  IIUC there's nothing like costs at match.pd time.
> 

I'd be great if we didn't have to implement another cost function in the
backend for that ;)


Best regards,
Oleg Endo