[webkit-changes] [WebKit/WebKit] 508336: [JSC] Do not use BitSet matching against 4 charact...

[Yusuke Suzuki]

  Branch: refs/heads/main
  Home:   https://github.com/WebKit/WebKit
  Commit: 5083369ede4ca54a8de1640e2aba149065e61e97
      https://github.com/WebKit/WebKit/commit/5083369ede4ca54a8de1640e2aba149065e61e97
  Author: Yusuke Suzuki <ysuzuki at apple.com>
  Date:   2024-08-25 (Sun, 25 Aug 2024)

  Changed paths:
    M Source/JavaScriptCore/yarr/YarrJIT.cpp

  Log Message:
  -----------
  [JSC] Do not use BitSet matching against 4 character case in YarrJIT
https://bugs.webkit.org/show_bug.cgi?id=278622
rdar://problem/134643505

Reviewed by Anne van Kesteren.

We found that sequential matching is faster for 4 character case (JetStream2/UniPoker).
This patch adjusts these heuristics.

* Source/JavaScriptCore/yarr/YarrJIT.cpp:

Canonical link: https://commits.webkit.org/282715@main



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