Il 13/10/2012 00:25, Steven Bosscher ha scritto: > On Fri, Oct 12, 2012 at 11:16 PM, Jan Hubicka <hubi...@ucw.cz> wrote: >>> On Fri, Oct 12, 2012 at 10:44 PM, Jan Hubicka <hubi...@ucw.cz> wrote: >>>> 1) computing liveness with REG_EQUAL included prior RD that means a lot >>>> of shuffling of REG_DEAD notes >>> >>> I was already working on a patch for this. I'll send it here later tonight. >> >> Great, thanks! This is probably most sensible approach even if we will need >> to >> recompute liveness before/after webizer. > > I don't think we have to touch the liveness sets. We can compute an > extra set of registers live only for REG_EQUAL/REG_EQUIV notes. > Attached is what I had in mind. Untested, etc. it's late (and the > Yankees are playing) so I'll get back to properly testing this > tomorrow.
Can we just simulate liveness for web, and drop REG_EQUAL/REG_EQUIV notes that refer to a dead pseudo? Paolo
