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Author Archives: jnthnwrthngtn
Towards a new general dispatch mechanism in MoarVM
My goodness, it appears I’m writing my first Raku internals blog post in over two years. Of course, two years ago it wasn’t even called Raku. Anyway, without further ado, let’s get on with this shared brainache. What is dispatch? … Continue reading
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3 Comments
Taking a break from Raku core development
I’d like to thank everyone who voted for me in the recent Raku Steering Council elections. By this point, I’ve been working on the language for well over a decade, first to help turn a language design I found fascinating … Continue reading
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My Perl 6 wishes for 2019
This evening, I enjoyed the New Year’s fireworks display over the beautiful Prague skyline. Well, the bit of it that was between me and the fireworks, anyway. Rather than having its fireworks display at midnight, Prague puts it at 6pm … Continue reading
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Speeding up object creation
Recently, a Perl 6 object creation benchmark result did the rounds on social media. This Perl 6 code: class Point { has $.x; has $.y; } my $total = 0; for ^1_000_000 { my $p = Point.new(x => 2, y => 3); … Continue reading
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5 Comments
Eliminating unrequired guards
MoarVM’s optimizer can perform speculative optimization. It does this by gathering statistics as the program is interpreted, and then analyzing them to find out what types and callees typically show up at given points in the program. If it spots … Continue reading
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Faster box/unbox and Int operations
My work on Perl 6 performance continues, thanks to a renewal of my grant from The Perl Foundation. I’m especially focusing on making common basic operations faster, the idea being that if those go faster than programs composed out of them also … Continue reading
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6 Comments
Redesigning Rakudo’s Scalar
What’s the most common type your Perl 6 code uses? I’ll bet you that in most programs you write, it’ll be Scalar. That might come as a surprise, because you pretty much never write Scalar in your code. But in: my $a = … Continue reading
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1 Comment
Dynamic lookups and context introspection with inlining
Inlining is one of the most important optimizations that MoarVM performs. Inlining lets us replace a call to some Block, Sub, or Method with the code that is inside of it. The most immediate benefit is to eliminate the overhead of calling, but that’s … Continue reading
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More precise deoptimization usage tracking
In my previous post here, I talked about deoptimization and its implications for usage information. If you didn’t read that post, I suggest reading it before continuing, since the work described in this post builds upon it. Further background on deoptimization and … Continue reading
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Better usage information in the MoarVM specializer
I’ve been doing lots of work on the MoarVM specializer of late, and will be writing a few posts here to explain it. This work has been covered by my grant from The Perl Foundation. This post covers the recent addition … Continue reading
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