Software > Applications and Porting

[DEV] JIT support for Firefox

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tle:

--- Quote from: MPC7500 on July 04, 2026, 09:17:42 pm ---tle, are you already using Fable, or which model do you use?

--- End quote ---

I do use a little bit of Fable before it was taken down by the US government. These days I use a bit of Opus for mundane tasks like rebasing or monitoring full test suites run.

tle:

--- Quote from: Hasturtium on May 28, 2026, 10:36:29 am ---Chiming in to say I've been testing a Fedora build of v152 that has not hiccuped once and finally feels like a full-featured browser. It's slower than Chromium on the same hardware - the Kraken JS test indicated around 1200ms on Chromium, and a skosh over 2100ms on Firefox - but for everyday usage I'm quite happy. Thanks for this!

--- End quote ---

The Firefox 153 JIT SpiderMonkey is actually 18% faster than Chromium + V8. The slowness derives from the browser side, likely DOM rendering which is out of scope of this work btw.

DKnoto:
@tle

I'll try to add your patches from yesterday for version 153 to my Void Linux templates as soon as possible and run some comparison tests with version 152.

tle:

--- Quote from: DKnoto on July 22, 2026, 04:54:47 am ---@tle

I'll try to add your patches from yesterday for version 153 to my Void Linux templates as soon as possible and run some comparison tests with version 152.

--- End quote ---

I'd like to point out that Firefox is actually slower than Chromium (on x86_64 and aarch64) for the same KrakenJS tests.

carlosgonz:
So tle firefox port already support big endian?
This Firefox-v153 patches work on ESR140.12? the reason it is because i use gnu icecat, then icecat 153esr it is not released yet to patch.

So gnu icecat superpowerpc big endian it is my real dreams!!! atm i use icecat 140.12 superpowerpc little endian, but without JIT WASM either VSX

thanks of adavance.

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