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LibJS: Elide function wrapper for class field literal initializers
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Browse source 
If a class field initializer is just a simple literal, we can skip
creating (and calling) a wrapper function for it entirely.

1.44x speedup on JetStream3/raytrace-private-class-fields.js
1.53x speedup on JetStream3/raytrace-public-class-fields.js
This commit is contained in:
Andreas Kling 2025-04-01 20:53:57 +02:00 • committed by Andreas Kling
commit 6bb0d585e3
Notes: github-actions[bot] 2025-04-01 21:56:14 +00:00
5 changed files with 61 additions and 22 deletions
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4
Libraries/LibJS/Runtime/ClassFieldDefinition.h
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@ -17,8 +17,8 @@ using ClassElementName = Variant<PropertyKey, PrivateName>;
// 6.2.10 The ClassFieldDefinition Record Specification Type, https://tc39.es/ecma262/#sec-classfielddefinition-record-specification-type
struct ClassFieldDefinition {
ClassElementName name; // [[Name]]
GC::Ptr<ECMAScriptFunctionObject> initializer; // [[Initializer]]
ClassElementName name; // [[Name]]
Variant<GC::Ref<ECMAScriptFunctionObject>, Value, Empty> initializer; // [[Initializer]]
};
}