Branch: refs/heads/main
Home: https://github.com/WebKit/WebKit
Commit: 785c311d1cc29c01ca3c3e0534be567ac3535a0e
https://github.com/WebKit/WebKit/commit/785c311d1cc29c01ca3c3e0534be567ac3535a0e
Author: Yusuke Suzuki <[email protected]>
Date: 2026-06-17 (Wed, 17 Jun 2026)
Changed paths:
M Source/JavaScriptCore/dfg/DFGLivenessAnalysisPhase.cpp
M Source/WTF/wtf/SparseBitVector.h
Log Message:
-----------
[JSC] Use SparseBitVector and uint64 Vector in DFGLivenessAnalysis
https://bugs.webkit.org/show_bug.cgi?id=317267
rdar://179879980
Reviewed by Yijia Huang.
Doing similar optimization to 315242@main in DFG / FTL.
We do not use WTF::Liveness here as DFG Liveness need to iterate nodes
additionally to collect kill etc. information and measurement showed
that using WTF::Liveness here is slower.
* Source/JavaScriptCore/dfg/DFGLivenessAnalysisPhase.cpp:
(JSC::DFG::performGraphPackingAndLivenessAnalysis):
* Source/WTF/wtf/SparseBitVector.h:
(WTF::SparseBitVector::add):
Canonical link: https://commits.webkit.org/315385@main
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