Welcome to the main channel on the development of MoarVM, a virtual machine for NQP and Rakudo (moarvm.org). This channel is being logged for historical purposes.
Set by lizmat on 24 May 2021.
00:00 reportable6 left 00:01 reportable6 joined 01:01 tellable6 left, quotable6 left, nativecallable6 left, shareable6 left, statisfiable6 left, linkable6 left, committable6 left, squashable6 left, sourceable6 left, coverable6 left, releasable6 left, benchable6 left, evalable6 left, unicodable6 left, bisectable6 left, greppable6 left, reportable6 left, notable6 left, bloatable6 left 01:02 unicodable6 joined, bloatable6 joined, squashable6 joined, quotable6 joined, coverable6 joined 01:03 releasable6 joined, shareable6 joined, committable6 joined, benchable6 joined, tellable6 joined, notable6 joined, sourceable6 joined, linkable6 joined 01:04 bisectable6 joined, greppable6 joined, nativecallable6 joined, reportable6 joined, statisfiable6 joined, evalable6 joined 05:05 dogbert11 joined 05:08 dogbert17 left 05:29 squashable6 left 05:31 squashable6 joined 05:45 dogbert11 left 05:46 dogbert11 joined 05:47 dogbert17 joined 05:51 dogbert11 left 05:54 dogbert17 left 06:00 reportable6 left, reportable6 joined 06:03 dogbert17 joined 06:30 dogbert11 joined 06:34 dogbert17 left 06:45 dogbert11 left 06:46 dogbert11 joined 06:59 dogbert11 left, dogbert11 joined 07:06 dogbert11 left 07:09 dogbert11 joined 07:14 epony joined 07:15 dogbert17 joined 07:19 dogbert11 left 07:21 dogbert17 left 07:22 dogbert17 joined 07:46 sena_kun joined 08:05 brrt joined
brrt \o 08:27
08:38 brrt left
timo brrt o/ 09:13
you probably have a better idea than me / already know details about this topic: using lea instructions instead of add; when is it worth it, can the exprjit be easily taught how to apply it just by making a proper tile? can we fuse an a + n * b in the assembly into a lea when we see it without a more complicated optimization pass? 09:16
i even saw something like "5 * n turns into n + 4 * n" 09:25
09:40 sena_kun left 09:42 sena_kun joined 09:52 sena_kun left
nine Before adding new features I'd rather like the expr jit to be fixed... It is known to generate racy code and I simply gave up on trying to fix that. 10:18
12:00 reportable6 left 12:01 reportable6 joined
timo oh oops 12:04
what does it race with? like, when you try to write code that works with atomics it re-orders things against your wishes?
(but also, maybe there is a tuit shaped like lea from someone who can't do the racyness fix, and maybe brrt has a tuit shaped like explaining the lea thing, etc) 12:05
... where are my tuits?
both in a literal, and a metaphorical sense
nine (template: gethow 13:12
(let: (($how (^getf (^stable $1) MVMSTable HOW)))
(if (nz $how)
(call (^func MVM_6model_get_how)
You would think that we're fetching $how once into a register, check it and then return it. But in reality this generates 2 mov instructions reading from that memory location, resulting in a TOCTTOU race condition
jack9 how to inspect moar bytecode 13:45
13:58 linkable6 left, evalable6 left, evalable6 joined 14:00 linkable6 joined
nine jack9: moar --dump foo.mbc 14:05
tellable6 nine, I'll pass your message to jack9
lizmat And yet another Rakudo Weekly News hits the Net: rakudoweekly.blog/2023/01/23/2023-...nk-you-jj/ 15:06
15:12 epony left 15:13 epony joined, linkable6 left, linkable6 joined 15:16 linkable6 left 15:18 Geth left, Geth joined, linkable6 joined 15:22 Geth left, Geth joined 15:24 linkable6 left, linkable6 joined 18:00 reportable6 left 18:03 reportable6 joined 20:44 discord-raku-bot left, discord-raku-bot joined 21:13 [Coke] left 22:15 bisectable6 left, bisectable6 joined