Branch: refs/heads/main
  Home:   https://github.com/WebKit/WebKit
  Commit: fcba3a40309971569db782e44a3aeed4f3c62423
      
https://github.com/WebKit/WebKit/commit/fcba3a40309971569db782e44a3aeed4f3c62423
  Author: Taher Ali <[email protected]>
  Date:   2026-03-14 (Sat, 14 Mar 2026)

  Changed paths:
    M Source/JavaScriptCore/assembler/LinkBuffer.h
    M Source/JavaScriptCore/runtime/Options.cpp
    M Source/JavaScriptCore/runtime/OptionsList.h
    M Source/WebCore/cssjit/SelectorCompiler.cpp

  Log Message:
  -----------
  [CSS JIT] Add dumpCSSJITDisassembly runtime option
https://bugs.webkit.org/show_bug.cgi?id=309906
rdar://172490476

Reviewed by Justin Michaud.

Replace the compile-time CSS_SELECTOR_JIT_DEBUGGING with a
runtime JSC option, so CSS JIT disassembly can be enabled via
JSC_dumpCSSJITDisassembly=true without rebuilding WebKit.

* Source/JavaScriptCore/assembler/LinkBuffer.h:
* Source/JavaScriptCore/runtime/Options.cpp:
(JSC::Options::notifyOptionsChanged):
* Source/JavaScriptCore/runtime/OptionsList.h:
* Source/WebCore/cssjit/SelectorCompiler.cpp:
(WebCore::SelectorCompiler::shouldDumpCSSJITDisassembly):
(WebCore::SelectorCompiler::SelectorCodeGenerator::SelectorCodeGenerator):
(WebCore::SelectorCompiler::SelectorCodeGenerator::compile):
(WebCore::SelectorCompiler::computeBacktrackingInformation):
(WebCore::SelectorCompiler::SelectorCodeGenerator::generatePrologue):
(WebCore::SelectorCompiler::SelectorCodeGenerator::generateEpilogue):
(WebCore::SelectorCompiler::SelectorCodeGenerator::generateSelectorChecker):

Canonical link: https://commits.webkit.org/309283@main



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