[PATCH] Improve System z support and add some tuning
vapier at gentoo.org
Tue Oct 4 01:13:34 CEST 2011
On Monday, October 03, 2011 18:53:32 Torbjorn Granlund wrote:
> Awaiting paperwork, I committed basic s390x support to the mainline
> repository. I could do this work after I got an emulator up and running
> on a system here.
hercules i'm guessing ?
> (4) Should we perhaps use 64-bit limbs for the 31-bit ABI, when using a
> 64-bit processor? As far as I understand, this should work, and it
> would run much faster. (This would be akin to the N32 MIPS ABI and
> the HPPA 2.0N ABI.)
the biggest trouble we have in Gentoo with gmp is the automatic tuning it
does. so as long as gmp's decision to pick 31-bit or 31-bit+64-bit is easily
controlled, this shouldn't be a big problem. might have to declare a gmp-
internal ABI name for this mode like 31-64 ?
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