iiinova — where your digital self keeps evolving

titzerbl.bsky.social @titzerbl.bsky.social · 13/06/2026

If you spent ten million dollars *per day* with absolutely nothing to show for it, it would take three hundred years (THREE CENTURIES!) to blow what Elon is worth on paper. You can only make so much money by creating and inflating your own fake currency. The system is completely broken.

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titzerbl.bsky.social @titzerbl.bsky.social · 13/06/2026

If you earned..."earned"...five hundred million dollars *per year* since the birth of Jesus, you would still not have as much money as Elon is worth on paper. You can only make so much money by creating and inflating your own fake currency. The system is completely broken.

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titzerbl.bsky.social @titzerbl.bsky.social · 28/05/2026

They changed the favicon of every single google service so I can't find my calendar in my tabs anymore. This about the 100,000th time some UI designers I never met just broke my brain's pattern recognition for no reason at all. Are they aware that people *use* computers for work?

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Bailey Hayes @bailey-hayes.bsky.social · 14/05/2026

Elizabeth Gilbert wrote an excellent article on how to use #Wasm for service chaining and composition with WASIP3! bytecodealliance.org/articles/how... #WebAssembly #BytecodeAlliance

bytecodealliance.org

How Wasm components enable pluggable tooling through interposition

And how the splicer framework makes it tractable at any interface edge.

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titzerbl.bsky.social @titzerbl.bsky.social · 15/05/2026

Installing MX-Linux on old Chromebook to have a device I can abuse. Abysmally clunk firmware update process required a HW write protect bypass. Following a particularly crappy Ubuntu 26 first go, I conclude that if the UI is going to be shitty, it's better if shitty *and fast*. Go MX-Linux!

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titzerbl.bsky.social @titzerbl.bsky.social · 26/02/2026

People who know me know my grumpiness about UI changes and obsolescence. While I appreciate the challenge of adding new features and onboarding users, popping up a walkthrough in my face is annoying. Most of the time I want a NOT RIGHT NOW button. I'll get to it later, please stop bothering me.

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titzerbl.bsky.social @titzerbl.bsky.social · 23/02/2026

I have struggled with Rosetta 2 not liking Virgil x86-64 binaries for some time. Today I put Claude on it. It's fascinating watch it go through pretty heroic attempts to figure out the issue. We are hours and compiler patches deep in this, together.

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titzerbl.bsky.social @titzerbl.bsky.social · 17/02/2026

Merged the stable release for Virgil III-10. Virgil has real lambdas that are on by default (with return type inference stuff!) and all the optimization levels work. github.com/titzer/virgi...

github.com

Stable Release III-10 by titzer · Pull Request #529 · titzer/virgil

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titzerbl.bsky.social @titzerbl.bsky.social · 16/02/2026

Every new thing about MacOS upgrades infuriates me. Much ink has been spilled about the rounded corners, but how about the fact that the terminal application now has two columns' worth of horizontal padding that is now unusable. No reason at all. Just wasting space.

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titzerbl.bsky.social @titzerbl.bsky.social · 10/02/2026

*sigh* After two months of fits and starts, I finally landed the big global regalloc refactor that passes the CI, and both Virgil and Wizard tests all pass now at -O3. I just have to fix the symbols for debugging, then stable rev...

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titzerbl.bsky.social @titzerbl.bsky.social · 20/01/2026

Elizabeth's work on Whamm triggered a New Stack article!

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titzerbl.bsky.social @titzerbl.bsky.social · 14/01/2026

So that "simple" register allocator bugfix metastasized into a rewrite of about one third--approaching one half, TBH--of the graph coloring allocator. And I just realized that deconstructing SSA before doing the pre-spill (shadow stack) phase was...unwise.

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titzerbl.bsky.social @titzerbl.bsky.social · 07/01/2026

Getting dragged down into the register allocator hole again. Every time I disappear down the hole I spend several days paging stuff back in, learning two or three minor insights, fix a bug by turning something off, and then promptly forget it all.

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titzerbl.bsky.social @titzerbl.bsky.social · 23/12/2025

Ugh, I am so close to being able to squashing the last -O3 bug in the Virgil compiler! It passes all of Virgil's, with bootstrap, and passes nearly all of Wizard's, except some mysterious coverage monitor bug and WASI fd_write. After -O3 it's time to stable rev!

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titzerbl.bsky.social @titzerbl.bsky.social · 13/12/2025

@shriram.bsky.social You always refer to your offspring as "kid". I wrote a song about the first Scientist. Somehow "Kid A" reminds of your stories of them. suno.com/s/07w8E55Fo9...

suno.com

Purple-ometer

Listen and make your own on Suno.

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Ingvar Stepanyan @rreverser.com · 12/11/2025

Haven't tried myself yet, but this VSCode extension for customisable debug visualisations looks absolutely amazing. marketplace.visualstudio.com/items?itemNa...

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Andy Wingo @wingolog.org · 13/11/2025

new bloggery: a look back on the last couple years of developments in v8's garbage collector wingolog.org/archives/202...

wingolog.org

the last couple years in v8's garbage collector — wingolog

wingolog: article: the last couple years in v8's garbage collector

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titzerbl.bsky.social @titzerbl.bsky.social · 29/10/2025

Today I presented to the Wasm CG a proposal for fine-grained dynamic code generation as a core WebAssembly feature. The proposal is now at phase 1! github.com/WebAssembly/... Also immortalized in song: suno.com/song/19e0679...

github.com

GitHub - WebAssembly/jit-interface: WebAssembly specification, reference interpreter, and test suite for the jit-interfaces proposal.

WebAssembly specification, reference interpreter, and test suite for the jit-interfaces proposal. - WebAssembly/jit-interface

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Fabio Niephaus @fniephaus.com · 10/10/2025

It’s live! "@graalvm.org meets #WebAssembly” from @devoxx.com: compile JVM apps to Wasm (Web Image) and run Wasm in Java or Kotlin at near‑native speed (GraalWasm). Lots of live demos included! www.youtube.com/watch?v=uefc...

youtube.com

GraalVM meets WebAssembly by Fabio Niephaus

YouTube video by Devoxx

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titzerbl.bsky.social @titzerbl.bsky.social · 17/09/2025

How I'm feeling about data layout / protocol description languages right now. ...except none of them even ending up becoming standard! xkcd.com/927/

xkcd.com

Standards

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titzerbl.bsky.social @titzerbl.bsky.social · 16/09/2025

@dubroy.com alerted me to the Safari release notes (developer.apple.com/documentatio...) say version 26 ships an in-place interpreter for WebAssembly, which is in part based on the Wizard design, but adapted for Safari's use cases. This is cool! Wasm brings all the VMs to tiers!

developer.apple.com

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titzerbl.bsky.social @titzerbl.bsky.social · 06/08/2025

Today I finished implementing the last of the relaxed-simd proposal (now Phase 4). That completes Wizard's support for all of the Wasm 3.0 features, which includes all the good things like exception handling, function references, garbage collection, and tail calls! github.com/titzer/wizar...

github.com

GitHub - titzer/wizard-engine: Research WebAssembly Engine

Research WebAssembly Engine. Contribute to titzer/wizard-engine development by creating an account on GitHub.

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titzerbl.bsky.social @titzerbl.bsky.social · 22/05/2025

Hello, it's 2011 again and I'm crashing the MacOS kernel with 300 byte binaries. If only it were someone *else's* kernel.

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titzerbl.bsky.social @titzerbl.bsky.social · 30/04/2025

Whenever a new feature is hot off the presses I am a little hesitant to use it in "production" code, and certainly a self-hosted compiler requires a stable rev to be usable, but man--unittests? Blast away with those lambda bombs. I have so much pent-up closuring!

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titzerbl.bsky.social @titzerbl.bsky.social · 28/04/2025

That about does it for lambdas in Virgil. Woohoo! First there were just Class, Functions, Tuples, and Type Parameters. Then there were algebraic data types. Then, partial application. Now, full lexical closures! github.com/titzer/virgi...

github.com

[funexpr] Implement captured variables by titzer · Pull Request #395 · titzer/virgil

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Thomas Steiner @tomayac.com · 20/03/2025

As of last December, release 2.0 of the #Wasm specification is “official”! Read Andreas Rossberg's post, which happens to be the first real post on the #WebAssembly website's new News 🗞️ section: webassembly.org/news/2025-03....

webassembly.org

- WebAssembly

WebAssembly (abbreviated Wasm) is a binary instruction format for a stack-based virtual machine. Wasm is designed as a portable compilation target for programming languages, enabling deployment on the...

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titzerbl.bsky.social @titzerbl.bsky.social · 19/03/2025

Yesterday we put up the camera-ready for the WALI paper! This paper introduces Thin Kernel Interfaces for WebAssembly which allows a new class of powerful applications for Wasm and building higher-level interfaces like WASI in an engine-agnostic way. arxiv.org/abs/2312.03858

arxiv.org

Empowering WebAssembly with Thin Kernel Interfaces

Wasm is gaining popularity outside the Web as a well-specified low-level binary format with ISA portability, low memory footprint and polyglot targetability, enabling efficient in-process sandboxing o...

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titzerbl.bsky.social @titzerbl.bsky.social · 14/02/2025

Wizard has supported Wasm GC for a while now, but now it finally supports all GC opcodes in JIT-only mode. The object model needs work, but this unblocks more perf work for stack switching. github.com/titzer/wizar...

github.com

[spc] Fix register of ref.test (#298) · titzer/wizard-engine@83436b1

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titzerbl.bsky.social @titzerbl.bsky.social · 10/02/2025

Over the past week or so I spent some time adding some syntactic sugar (with type inference) to Virgil. The idea is that function/method bodies that are a simple return of an expression can have their return types inferred. A can of worms, but looks nice, IMHO. github.com/titzer/wizar...

github.com

[refactor] Experiment with using simple function bodies · titzer/wizard-engine@39f36f9

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titzerbl.bsky.social @titzerbl.bsky.social · 24/01/2025

Windows 95 was launched 30 years ago. I had a programming book on Windows 95...in 1994!! 500+ pages that documented darn near everything. Glossary, index, working examples, migration path. The amount of preparation that went into this launch was astounding. www.youtube.com/watch?v=_Jzf...

youtube.com

Microsoft Windows 95 Launch with Bill Gates & Jay Leno (1995)

YouTube video by Blue OS Museum

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titzerbl.bsky.social @titzerbl.bsky.social · 20/01/2025

Finally pulled the trigger on another stable revision of the Virgil compiler (checking in the binaries of the compiler having compiled itself), which is good because right after is the perfect time to shake things up with new features and optimizations! github.com/titzer/virgi...

github.com

[stable] Release III-8.1787 (#335) · titzer/virgil@31a9990

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Shriram Krishnamurthi @shriram.bsky.social · 06/01/2025

Last year I asked a question about the state of tracing JITs, and it led to a wonderful exchange. @cfbolz.bsky.social has written a terrific summary that captures a lot of folk knowledge that would otherwise be lost. Thanks! pypy.org/posts/2025/0...

pypy.org

Musings on Tracing in PyPy

Last summer, Shriram Krishnamurthi asked on Twitter: "I'm curious what the current state of tracing JITs is. They used to be all the rage for a while, then I though I heard they weren't so effective,

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titzerbl.bsky.social @titzerbl.bsky.social · 06/01/2025

Today I got to do some thinking about compiler IRs and finally solved a problem that has been vexing me for at least a dozen years: Is it possible to directly interpret a sea-of-nodes graph efficiently (i.e. no schedule)? What does that even mean? Yes Virginia, it's possible. It means max ILP.

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