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A comment on Firefox's JIT is getting significantly faster. Parent comment

Re:Firefox's JIT is getting significantly faster by LeSaucy on Friday September 25, 2020 @02:31PM (#24592742)
That’s a 3300 line cpp file, care to cite a specific example?
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Re:Firefox's JIT is getting significantly faster by est31 on Saturday September 26, 2020 @07:47AM (#24598048)
The entire file contains WarpBuilder, which is behind the JIT speedup that this thread is about.

> The SpiderMonkey (JS) team has been working on a significant update to > our JITs called WarpBuilder (or just Warp) [0,1].

The whole component was the cool stuff I was referring too. I linked it mainly to show that it's C++ instead of, say, Rust, not to highlight any component of it.

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