cd7ff16106
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.
45 lines
1.7 KiB
Text
45 lines
1.7 KiB
Text
$b5486d03 for-in-lexical-scope.js:1:12
|
|
Registers: 12
|
|
Blocks: 6
|
|
Constants:
|
|
[0] = Int32(0)
|
|
[1] = Undefined
|
|
|
|
block0:
|
|
[ 0] GetLexicalEnvironment dst:reg4
|
|
[ 8] CreateLexicalEnvironment dst:reg5, parent:reg4, capacity:0, is_catch_environment:false
|
|
[ 20] CreateVariable `x`, is_immutable:false, is_global:false, is_strict:false
|
|
[ 30] NewObject dst:reg6
|
|
[ 40] InitObjectLiteralProperty object:reg6, `i`, src:Int32(0), shape_cache_index:0, property_slot:0
|
|
[ 58] CacheObjectShape object:reg6
|
|
[ 68] SetLexicalEnvironment environment:reg4
|
|
[ 70] JumpNullish condition:reg6, true_target:block3, false_target:block4
|
|
|
|
block1:
|
|
[ 80] End value:reg6
|
|
|
|
block2:
|
|
[ 88] ObjectPropertyIteratorNext dst_value:reg7, dst_done:reg8, iterator_object:reg5
|
|
[ 98] JumpIf condition:reg8, true_target:block1, false_target:block5
|
|
|
|
block3:
|
|
[ a8] End value:reg6
|
|
|
|
block4:
|
|
[ b0] GetObjectPropertyIterator dst_iterator:reg5, object:reg6
|
|
[ c0] Mov dst:reg6, src:Undefined
|
|
[ d0] Jump target:block2
|
|
|
|
block5:
|
|
[ d8] CreateLexicalEnvironment dst:reg9, parent:reg4, capacity:0, is_catch_environment:false
|
|
[ f0] CreateVariable `x`, is_immutable:false, is_global:false, is_strict:false
|
|
[ 100] InitializeLexicalBinding `x`, src:reg7
|
|
[ 118] CreateLexicalEnvironment dst:reg10, parent:reg9, capacity:0, is_catch_environment:false
|
|
[ 130] CreateMutableBinding environment:reg10, `probeDecl`, can_be_deleted:false
|
|
[ 140] NewFunction dst:reg11, shared_function_data_index:0
|
|
[ 158] InitializeLexicalBinding `probeDecl`, src:reg11
|
|
[ 170] GetBinding dst:reg11, `probeDecl`
|
|
[ 188] DynamicSetVariableBinding `probeDecl`, src:reg11
|
|
[ 198] SetLexicalEnvironment environment:reg9
|
|
[ 1a0] SetLexicalEnvironment environment:reg4
|
|
[ 1a8] Jump target:block2
|