Track bytecode-created declarative bindings while generating code so most environment-coordinate operands can be emitted eagerly. Dynamic lookup instructions remain for scopes where eval or object environments can change resolution at runtime. This lets the static coordinate bytecode variants run without cached- vs-uncached branches or eval poison checks, and rebaselines bytecode output for the newly eager coordinate operands.
34 lines
1.1 KiB
Text
34 lines
1.1 KiB
Text
$49b95e06 annexb-function-existing-var.js:10:1
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Registers: 7
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Blocks: 1
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Constants:
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[0] = Undefined
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block0:
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[ 0] GetGlobal dst:reg6, `test`
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[ 10] Call dst:reg5, callee:reg6, this_value:Undefined, test
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[ 30] End value:reg5
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test$02c02c04 annexb-function-existing-var.js:2:5
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Registers: 7
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Blocks: 1
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Constants:
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[0] = Undefined
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[1] = Int32(123)
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[2] = Bool(true)
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block0:
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[ 0] GetLexicalEnvironment dst:reg4
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[ 8] CreateVariable `f`, is_immutable:false, is_global:false, is_strict:false
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[ 18] InitializeVariableBinding `f`, src:Undefined
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[ 30] SetLexicalBinding `f`, src:Int32(123)
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[ 48] CreateLexicalEnvironment dst:reg5, parent:reg4, capacity:0, is_catch_environment:false
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[ 60] CreateMutableBinding environment:reg5, `f`, can_be_deleted:false
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[ 70] NewFunction dst:reg6, shared_function_data_index:0
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[ 88] InitializeLexicalBinding `f`, src:reg6
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[ a0] GetBinding dst:reg6, `f`
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[ b8] SetVariableBinding `f`, src:reg6
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[ d0] SetLexicalEnvironment environment:reg4
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[ d8] GetInitializedBinding dst:reg5, `f`
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[ f0] Return value:reg5
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