Branch: refs/heads/main
Home: https://github.com/WebKit/WebKit
Commit: a8f748629bbfc52eda349353afd737e164121b47
https://github.com/WebKit/WebKit/commit/a8f748629bbfc52eda349353afd737e164121b47
Author: Dan Hecht <[email protected]>
Date: 2026-01-21 (Wed, 21 Jan 2026)
Changed paths:
M Source/JavaScriptCore/JavaScriptCore.xcodeproj/project.pbxproj
M Source/JavaScriptCore/Sources.txt
R Source/JavaScriptCore/b3/air/AirAllocateRegistersAndStackByLinearScan.cpp
R Source/JavaScriptCore/b3/air/AirAllocateRegistersAndStackByLinearScan.h
M Source/JavaScriptCore/b3/air/AirGenerate.cpp
M Source/JavaScriptCore/b3/air/AirStackAllocation.h
M Source/JavaScriptCore/runtime/OptionsList.h
Log Message:
-----------
[JSC] Remove the B3 Air linear scan register allocator
https://bugs.webkit.org/show_bug.cgi?id=305968
rdar://168613601
Reviewed by Yusuke Suzuki and Keith Miller.
The greedy register allocator has been the default B3 Air register
allocator for all configurations for a while now, and we haven't
encountered any need to revert back to this allocator. So let's
clean up.
* Source/JavaScriptCore/JavaScriptCore.xcodeproj/project.pbxproj:
* Source/JavaScriptCore/Sources.txt:
* Source/JavaScriptCore/b3/air/AirAllocateRegistersAndStackByLinearScan.cpp:
Removed.
* Source/JavaScriptCore/b3/air/AirAllocateRegistersAndStackByLinearScan.h:
Removed.
* Source/JavaScriptCore/b3/air/AirGenerate.cpp:
(JSC::B3::Air::prepareForGeneration):
* Source/JavaScriptCore/b3/air/AirStackAllocation.h:
* Source/JavaScriptCore/runtime/OptionsList.h:
Canonical link: https://commits.webkit.org/305981@main
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