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Add bit about YJIT to NEWS.md #4997

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Oct 20, 2021
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Add bit about YJIT to NEWS.md #4997

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10 changes: 10 additions & 0 deletions NEWS.md
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Expand Up @@ -282,6 +282,16 @@ Excluding feature bug fixes.

* `RubyVM::MJIT` is renamed to `RubyVM::JIT`. [[Feature #17490]]

### YJIT: New experimental in-process JIT compiler

* Disabled by default, use `--yjit` command-line option to enable YJIT.

* Performance improvements on most real-world software, up to 22% on railsbench, 39% on liquid-render.

* Fast warm-up times.

* Limited to macOS & Linux on x86-64 platforms for now.

## Static analysis

### RBS
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