[webkit-changes] [WebKit/WebKit] a2cc91: Avoid JIT compilation for simple attribute-only ex...

[Yusuke Suzuki]

  Branch: refs/heads/main
  Home:   https://github.com/WebKit/WebKit
  Commit: a2cc9142cedd737a7344564b89a5ce0cd14e8c0f
      https://github.com/WebKit/WebKit/commit/a2cc9142cedd737a7344564b89a5ce0cd14e8c0f
  Author: Yusuke Suzuki <ysuzuki at apple.com>
  Date:   2024-01-17 (Wed, 17 Jan 2024)

  Changed paths:
    M Source/WebCore/dom/SelectorQuery.cpp
    M Source/WebCore/dom/SelectorQuery.h

  Log Message:
  -----------
  Avoid JIT compilation for simple attribute-only exact matching
https://bugs.webkit.org/show_bug.cgi?id=267616
rdar://121082724

Reviewed by Ryosuke Niwa.

To reduce machine code size, we add a path which handles very simple attribute-only exact matching,
which can avoid code generation for that patterns.

* Source/WebCore/dom/SelectorQuery.cpp:
(WebCore::isSingleAttributeExactSelector):
(WebCore::canOptimizeSingleAttributeExactMatch):
(WebCore::SelectorDataList::SelectorDataList):
(WebCore::SelectorDataList::executeSingleAttributeExactSelectorData const):
(WebCore::SelectorDataList::execute const):
* Source/WebCore/dom/SelectorQuery.h:

Canonical link: https://commits.webkit.org/273157@main