RFA: PR 34415: dbr_schedule vs. uninitialised registers

Eric Botcazou ebotcazou@libertysurf.fr
Fri Dec 14 16:14:00 GMT 2007


> Well, that would work too, but would make the register unnecessarily
> live in cases where my patch wouldn't (i.e. between the barrier and
> the place where the register really does become live).  I'm happy
> to do it that way instead if you prefer though.

My understanding is that resource.c was written with the flow.c way of doing 
things in mind (in particular backward propagation) so, barring the scrapping 
of resource.c itself, I think we'd better keep using a backward problem, i.e. 
LR instead of LIVE, for resource.c.

-- 
Eric Botcazou



More information about the Gcc-patches mailing list