mirror of
https://github.com/LadybirdBrowser/ladybird
synced 2026-04-26 01:35:08 +02:00
3a08f7b95f
Teach the Rust bytecode generator to treat the synthetic entry GetLexicalEnvironment as a removable prologue load. We still model reg4 as the saved entry lexical environment during codegen, but assemble() now deletes that load when no emitted instruction refers to the saved environment register. This keeps the semantics of unwinding and environment restoration intact while letting empty functions and other simple bodies start at their first real instruction.
128 lines
4.0 KiB
Plaintext
128 lines
4.0 KiB
Plaintext
$6b0803e2 destructuring-assignment.js:28:1
|
|
Registers: 8
|
|
Blocks: 1
|
|
Constants:
|
|
[0] = Undefined
|
|
|
|
block0:
|
|
[ 0] GetGlobal dst:reg6, `array_destructuring_with_class_default`
|
|
[ 18] Call dst:reg5, callee:reg6, this_value:Undefined, array_destructuring_with_class_default
|
|
[ 38] GetGlobal dst:reg7, `object_destructuring_with_function_default`
|
|
[ 50] Call dst:reg6, callee:reg7, this_value:Undefined, object_destructuring_with_function_default
|
|
[ 70] GetGlobal dst:reg7, `setter_parameter_resolution`
|
|
[ 88] Call dst:reg5, callee:reg7, this_value:Undefined, setter_parameter_resolution
|
|
[ a8] End value:reg5
|
|
|
|
|
|
array_destructuring_with_class_default$c0397068 destructuring-assignment.js:6:10
|
|
Registers: 13
|
|
Blocks: 7
|
|
Locals: x~0
|
|
Constants:
|
|
[0] = Undefined
|
|
[1] = Bool(false)
|
|
|
|
block0:
|
|
[ 0] GetLexicalEnvironment dst:reg4
|
|
[ 8] Mov dst:x~0, src:Undefined
|
|
[ 18] NewArray dst:reg5, elements:[Undefined]
|
|
[ 30] Mov dst:reg6, src:Bool(false)
|
|
[ 40] GetIterator dst_iterator_object:reg7, dst_iterator_next:reg8, dst_iterator_done:reg9, iterable:reg5
|
|
[ 58] IteratorNextUnpack dst_value:reg10, dst_done:reg6, iterator_object:reg7, iterator_next:reg8, iterator_done:reg9
|
|
[ 70] JumpFalse condition:reg6, target:block2
|
|
|
|
block1:
|
|
[ 80] Mov dst:reg10, src:Undefined
|
|
[ 90] Jump target:block2
|
|
|
|
block2:
|
|
[ 98] JumpUndefined condition:reg10, true_target:block3, false_target:block4
|
|
|
|
block3:
|
|
[ a8] CreateLexicalEnvironment dst:reg11, parent:reg4, capacity:0
|
|
[ b8] CreateVariable `C`, is_immutable:true, is_global:false, is_strict:false
|
|
[ c8] SetLexicalEnvironment environment:reg4
|
|
[ d0] NewClass dst:reg12, class_environment:reg11, class_blueprint_index:0
|
|
[ f0] Mov dst:reg10, src:reg12
|
|
|
|
block4:
|
|
[ 100] Mov dst:x~0, src:reg10
|
|
[ 110] JumpFalse condition:reg6, target:block6
|
|
|
|
block5:
|
|
[ 120] Return value:x~0
|
|
|
|
block6:
|
|
[ 128] IteratorClose iterator_object:reg7, iterator_next:reg8, iterator_done:reg9, completion_value:Undefined
|
|
[ 140] Return value:x~0
|
|
|
|
|
|
object_destructuring_with_function_default$544c1fbd destructuring-assignment.js:12:12
|
|
Registers: 8
|
|
Blocks: 3
|
|
Locals: x~0
|
|
Constants:
|
|
[0] = Undefined
|
|
|
|
block0:
|
|
[ 0] Mov dst:x~0, src:Undefined
|
|
[ 10] NewObject dst:reg5
|
|
[ 20] ThrowIfNullish src:reg5
|
|
[ 28] GetById dst:reg6, base:reg5, `x`
|
|
[ 48] JumpUndefined condition:reg6, true_target:block1, false_target:block2
|
|
|
|
block1:
|
|
[ 58] NewFunction dst:reg7, shared_function_data_index:0 (x)
|
|
[ 70] Mov dst:reg6, src:reg7
|
|
|
|
block2:
|
|
[ 80] Mov dst:x~0, src:reg6
|
|
[ 90] Return value:x~0
|
|
|
|
|
|
setter_parameter_resolution$75109441 destructuring-assignment.js:19:9
|
|
Registers: 12
|
|
Blocks: 5
|
|
Constants:
|
|
[0] = Undefined
|
|
[1] = Bool(false)
|
|
|
|
block0:
|
|
[ 0] CreateVariable `setValue`, is_immutable:false, is_global:false, is_strict:false
|
|
[ 10] InitializeVariableBinding `setValue`, src:Undefined
|
|
[ 28] NewPrimitiveArray dst:reg5, elements:[23]
|
|
[ 40] Mov dst:reg6, src:Bool(false)
|
|
[ 50] GetIterator dst_iterator_object:reg7, dst_iterator_next:reg8, dst_iterator_done:reg9, iterable:reg5
|
|
[ 68] NewObject dst:reg10
|
|
[ 78] NewFunction dst:reg11, shared_function_data_index:0 (set y), home_object:reg10
|
|
[ 90] PutById base:reg10, `y`, src:reg11, kind:Setter
|
|
[ b8] IteratorNextUnpack dst_value:reg11, dst_done:reg6, iterator_object:reg7, iterator_next:reg8, iterator_done:reg9
|
|
[ d0] JumpFalse condition:reg6, target:block2
|
|
|
|
block1:
|
|
[ e0] Mov dst:reg11, src:Undefined
|
|
[ f0] Jump target:block2
|
|
|
|
block2:
|
|
[ f8] PutById base:reg10, `y`, src:reg11, kind:Normal
|
|
[ 120] JumpFalse condition:reg6, target:block4
|
|
|
|
block3:
|
|
[ 130] GetInitializedBinding dst:reg5, `setValue`
|
|
[ 148] Return value:reg5
|
|
|
|
block4:
|
|
[ 150] IteratorClose iterator_object:reg7, iterator_next:reg8, iterator_done:reg9, completion_value:Undefined
|
|
[ 168] Jump target:block3
|
|
|
|
|
|
set y$f36f0033 destructuring-assignment.js:21:26
|
|
Registers: 5
|
|
Blocks: 1
|
|
Constants:
|
|
[0] = Undefined
|
|
|
|
block0:
|
|
[ 0] SetLexicalBinding `setValue`, src:arg0
|
|
[ 18] End value:Undefined
|