On 2016-12-06 14:35:43 -0600, Nico Williams wrote: > On Tue, Dec 06, 2016 at 12:27:51PM -0800, Andres Freund wrote: > > On 2016-12-06 14:19:21 -0600, Nico Williams wrote: > > > > I concur with your feeling that hand-rolled JIT is right out. But > > > > > > Yeah, that way lies maintenance madness. > > > > I'm not quite that sure about that. I had a lot of fun doing some > > hand-rolled x86 JITing. Not that is a ward against me being mad. But > > more seriously: Manually doing a JIT gives you a lot faster compilation > > times, which makes JIT applicable in a lot more situations. > > What I meant is that each time there are new ISA extensions, or > differences in how relevant/significant different implementations of the > same ISA implement certain instructions, and/or every time you want to > add a new architecture... someone has to do a lot of very low-level > work.
Yea, that's why I didn't pursue this path further. I *personally* think it'd be perfectly fine to only support JITing on linux x86_64 and aarch64 for now. And those I'd be willing to work on. But since I know that's not project policy... - Andres -- Sent via pgsql-hackers mailing list (pgsql-hackers@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers
