[Webkit-unassigned] [Bug 251261] Large allocations in a tight loop perform poorly when using the JavaScriptCore C and Objective-C APIs

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=251261

--- Comment #2 from Kasper Isager Dalsgarð <kasperisager at hey.com> ---
I think so, yes, but I'm unsure how to verify that's it's actually working:

```
$ codesign --display --entitlements - a.out
Executable=<cwd>/a.out
[Dict]
        [Key] com.apple.security.cs.allow-jit
        [Value]
                [Bool] true
```

Code signed with the following command:

```
$ codesign --force --options runtime --sign <key> --entitlements entitlements.plist a.out
```

I don't know if it provides any clues, but reducing the size of each allocation to just 1 KiB instead of 64 KiB makes my test program perform similar to Safari and jsc. What kind of optimisations would the JIT be able to do for larger allocations?

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