mirror of
https://github.com/LadybirdBrowser/ladybird
synced 2026-05-03 21:12:08 +02:00
ec2f4e4a7b
Replace the ClassExpression const& reference in the NewClass instruction with a u32 class_blueprint_index. The interpreter now reads from the ClassBlueprint stored on the Executable and calls construct_class() instead of the AST-based create_class_constructor(). Literal field initializers (numbers, booleans, null, strings, negated numbers) are used directly in construct_class() without creating an ECMAScriptFunctionObject, avoiding function creation overhead for common field patterns like `x = 0` or `name = "hello"`. Set class_field_initializer_name on SharedFunctionInstanceData at codegen time for statically-known field keys (identifiers, private identifiers, string literals, and numeric literals). For computed keys, the name is set at runtime in construct_class(). ClassExpression AST nodes are no longer referenced from bytecode.
44 lines
2.2 KiB
Plaintext
44 lines
2.2 KiB
Plaintext
JS bytecode executable ""
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[ 0] 0: GetLexicalEnvironment dst:reg4
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[ 8] GetGlobal dst:reg6, identifier:test
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[ 18] Call dst:reg5, callee:reg6, this_value:Undefined, test
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[ 38] InitializeLexicalBinding identifier:a, src:reg5
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[ 50] GetGlobal dst:reg6, identifier:console
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[ 60] GetById dst:reg7, base:reg6, property:log, base_identifier:console
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[ 78] GetGlobal dst:reg8, identifier:a
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[ 88] GetById dst:reg9, base:reg8, property:x, base_identifier:a
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[ a0] GetGlobal dst:reg8, identifier:a
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[ b0] GetById dst:reg10, base:reg8, property:y, base_identifier:a
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[ c8] GetGlobal dst:reg8, identifier:a
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[ d8] GetById dst:reg11, base:reg8, property:z, base_identifier:a
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[ f0] GetGlobal dst:reg8, identifier:a
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[ 100] GetById dst:reg12, base:reg8, property:w, base_identifier:a
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[ 118] GetGlobal dst:reg8, identifier:a
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[ 128] GetById dst:reg13, base:reg8, property:s, base_identifier:a
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[ 140] GetGlobal dst:reg8, identifier:a
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[ 150] GetById dst:reg14, base:reg8, property:computed, base_identifier:a
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[ 168] Call dst:reg5, callee:reg7, this_value:reg6, console.log, arguments:[reg9, reg10, reg11, reg12, reg13, reg14]
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[ 1a0] End value:reg5
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JS bytecode executable "test"
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[ 0] 0: GetLexicalEnvironment dst:reg4
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[ 8] CreateLexicalEnvironment dst:reg5, parent:reg4, capacity:0
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[ 18] CreateVariable identifier:A, is_immutable:true, is_global:false, is_strict:false
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[ 28] SetLexicalEnvironment environment:reg4
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[ 30] NewClass dst:reg6, class_environment:reg5, class_blueprint_index:0, element_keys:[element_keys:String("x"), element_keys:String("y"), element_keys:String("z"), element_keys:String("w"), element_keys:String("s"), element_keys:String("computed")]
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[ 68] Mov dst:A~0, src:reg6
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[ 78] ThrowIfTDZ src:A~0
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[ 80] Mov dst:reg5, src:A~0
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[ 90] CallConstruct dst:reg6, callee:reg5, A
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[ a8] Return value:reg6
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JS bytecode executable "A"
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[ 0] 0: GetLexicalEnvironment dst:reg4
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[ 8] End value:Undefined
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JS bytecode executable "field"
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[ 0] 0: GetLexicalEnvironment dst:reg4
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[ 8] Return value:Int32(3)
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42 -1 true null "hi" 3
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