mirror of
https://github.com/LadybirdBrowser/ladybird
synced 2026-04-30 19:47:17 +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.
71 lines
3.8 KiB
Plaintext
71 lines
3.8 KiB
Plaintext
JS bytecode executable ""
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[ 0] 0: GetLexicalEnvironment dst:reg4
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[ 8] GetGlobal dst:reg6, identifier:array_destructuring_with_class_default
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[ 18] Call dst:reg5, callee:reg6, this_value:Undefined, array_destructuring_with_class_default
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[ 38] GetGlobal dst:reg7, identifier:object_destructuring_with_function_default
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[ 48] Call dst:reg6, callee:reg7, this_value:Undefined, object_destructuring_with_function_default
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[ 68] GetGlobal dst:reg7, identifier:setter_parameter_resolution
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[ 78] Call dst:reg5, callee:reg7, this_value:Undefined, setter_parameter_resolution
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[ 98] End value:reg5
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JS bytecode executable "array_destructuring_with_class_default"
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[ 0] 0: GetLexicalEnvironment dst:reg4
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[ 8] Mov dst:x~0, src:Undefined
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[ 18] NewArray dst:reg5, elements:[Undefined]
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[ 30] Mov dst:reg6, src:Bool(false)
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[ 40] GetIterator dst_iterator_object:reg7, dst_iterator_next:reg8, dst_iterator_done:reg9, iterable:reg5
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[ 58] IteratorNextUnpack dst_value:reg11, dst_done:reg6, iterator_object:reg7, iterator_next:reg8, iterator_done:reg9
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[ 70] JumpFalse condition:reg6, target:@98
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[ 80] 1: Mov dst:reg11, src:Undefined
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[ 90] Jump target:@98
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[ 98] 2: JumpUndefined condition:reg11, true_target:@a8, false_target:@100
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[ a8] 3: CreateLexicalEnvironment dst:reg12, parent:reg4, capacity:0
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[ b8] CreateVariable identifier:C, is_immutable:true, is_global:false, is_strict:false
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[ c8] SetLexicalEnvironment environment:reg4
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[ d0] NewClass dst:reg13, class_environment:reg12, class_blueprint_index:0
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[ f0] Mov dst:reg11, src:reg13
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[ 100] 4: Mov dst:x~0, src:reg11
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[ 110] JumpFalse condition:reg6, target:@128
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[ 120] 5: Return value:x~0
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[ 128] 6: IteratorClose iterator_object:reg7, iterator_next:reg8, iterator_done:reg9
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[ 148] Return value:x~0
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JS bytecode executable "object_destructuring_with_function_default"
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[ 0] 0: GetLexicalEnvironment dst:reg4
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[ 8] Mov dst:x~0, src:Undefined
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[ 18] NewObject dst:reg5
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[ 28] ThrowIfNullish src:reg5
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[ 30] GetById dst:reg6, base:reg5, property:x
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[ 48] JumpUndefined condition:reg6, true_target:@58, false_target:@80
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[ 58] 1: NewFunction dst:reg7, shared_function_data_index:0, lhs_name:x
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[ 70] Mov dst:reg6, src:reg7
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[ 80] 2: Mov dst:x~0, src:reg6
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[ 90] Return value:x~0
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JS bytecode executable "setter_parameter_resolution"
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[ 0] 0: GetLexicalEnvironment dst:reg4
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[ 8] CreateVariable identifier:setValue, is_immutable:false, is_global:false, is_strict:false
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[ 18] InitializeVariableBinding identifier:setValue, src:Undefined
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[ 30] NewPrimitiveArray dst:reg5, elements:[23]
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[ 48] Mov dst:reg6, src:Bool(false)
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[ 58] GetIterator dst_iterator_object:reg7, dst_iterator_next:reg8, dst_iterator_done:reg9, iterable:reg5
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[ 70] IteratorNextUnpack dst_value:reg11, dst_done:reg6, iterator_object:reg7, iterator_next:reg8, iterator_done:reg9
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[ 88] JumpFalse condition:reg6, target:@b0
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[ 98] 1: Mov dst:reg11, src:Undefined
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[ a8] Jump target:@b0
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[ b0] 2: NewObject dst:reg12
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[ c0] NewFunction dst:reg13, shared_function_data_index:0, lhs_name:set y, home_object:reg12
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[ d8] PutSetterById base:reg12, property:y, src:reg13
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[ f0] PutNormalById base:reg12, property:y, src:reg11
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[ 108] JumpFalse condition:reg6, target:@138
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[ 118] 3: GetInitializedBinding dst:reg5, identifier:setValue
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[ 130] Return value:reg5
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[ 138] 4: IteratorClose iterator_object:reg7, iterator_next:reg8, iterator_done:reg9
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[ 158] Jump target:@118
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JS bytecode executable "set y"
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[ 0] 0: GetLexicalEnvironment dst:reg4
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[ 8] SetLexicalBinding identifier:setValue, src:arg0
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[ 20] End value:Undefined
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