Maybe you don't need Rust and WASM to speed up your JS
Few weeks ago I noticed a blog post “Oxidizing Source Maps with Rust and WebAssembly” making rounds on Twitter - talking about performance benefits of replacing plain JavaScript in the core of source-map library with a Rust version compiled to WebAssembly. This post piqued my interest, not because I am a huge on either Rust or WASM, but rather because I am always curious about language features an
IRHydra2
IRHydra2 is deprecated. Supporting various V8 related features in IRHydra was always a race against the clock. V8 5.9 has switched to a new execution pipeline (TurboFan+Ignition) and modernizing IRHydra to properly work with it would be too much of a time investment for me, given that I don't need to dig into JavaScript performance anymore. Ultimately IRHydra was always just a stopgap solution I c
Do not Measure the Weather
Java VM V8 Dart VM complexity ChaCha20 function getBlock(buffer) { var x = new Uint32Array(16); for (var i = 16; i--;) x[i] = input[i]; for (var i = 20; i > 0; i -= 2) { quarterRound(x, 0, 4, 8,12); quarterRound(x, 1, 5, 9,13); quarterRound(x, 2, 6,10,14); quarterRound(x, 3, 7,11,15); quarterRound(x, 0, 5,10,15); quarterRound(x, 1, 6,11,12); quarterRound(x, 2, 7, 8,13); quarterRound(x, 3, 4, 9,14)
The trap of the performance sweet spot
[If you have arrived here from a blog post discussing asm.js please read my own opinion about asm.js] Disclaimer: This is my personal blog. The views expressed on this page are mine alone and not those of my employer. This post is about JavaScript performance but I would like to start it by telling a story that might seem unrelated to JS. Please bear with me if you don't like C. A story of a C pro
Why asm.js bothers me
Please note that this post expresses my personal opinion and mine alone, not those of my employer or my teammates. I am writing it because I can’t hold my opinion inside anymore. My head was starting to feel like a balloon that is going to burst any minute. I am writing my thoughts and feelings down to free myself from this pressure. When reading my ramblings below please keep in mind that I used
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