mirror of
https://github.com/LadybirdBrowser/ladybird
synced 2026-05-11 01:22:43 +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.
175 lines
4.4 KiB
Plaintext
175 lines
4.4 KiB
Plaintext
$b53b3a59 optional-chain.js:25:1
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Registers: 8
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Blocks: 1
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Constants:
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[0] = Undefined
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[1] = Null
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block0:
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[ 0] GetGlobal dst:reg6, `member`
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[ 18] Call dst:reg5, callee:reg6, this_value:Undefined, member, arguments:[Null]
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[ 40] GetGlobal dst:reg7, `nested_member`
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[ 58] Call dst:reg6, callee:reg7, this_value:Undefined, nested_member, arguments:[Null]
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[ 80] GetGlobal dst:reg7, `call_no_args`
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[ 98] Call dst:reg5, callee:reg7, this_value:Undefined, call_no_args, arguments:[Null]
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[ c0] GetGlobal dst:reg7, `call_with_args`
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[ d8] Call dst:reg6, callee:reg7, this_value:Undefined, call_with_args, arguments:[Null]
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[ 100] GetGlobal dst:reg7, `computed`
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[ 118] Call dst:reg5, callee:reg7, this_value:Undefined, computed, arguments:[Null]
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[ 140] GetGlobal dst:reg7, `member_then_call`
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[ 158] Call dst:reg6, callee:reg7, this_value:Undefined, member_then_call, arguments:[Null]
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[ 180] End value:reg6
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member$f8fa6898 optional-chain.js:7:5
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Registers: 7
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Blocks: 4
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Constants:
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[0] = Undefined
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block0:
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[ 0] Mov2 dst1:reg5, src1:Undefined, dst2:reg6, src2:arg0
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[ 18] JumpNullish condition:reg6, true_target:block1, false_target:block3
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block1:
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[ 28] Mov dst:reg6, src:Undefined
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block2:
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[ 38] Return value:reg6
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block3:
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[ 40] Mov dst:reg5, src:reg6
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[ 50] GetById dst:reg6, base:reg6, `x`
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[ 70] Return value:reg6
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nested_member$1108ab88 optional-chain.js:10:5
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Registers: 7
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Blocks: 5
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Constants:
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[0] = Undefined
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block0:
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[ 0] Mov2 dst1:reg5, src1:Undefined, dst2:reg6, src2:arg0
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[ 18] JumpNullish condition:reg6, true_target:block1, false_target:block3
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block1:
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[ 28] Mov dst:reg6, src:Undefined
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block2:
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[ 38] Return value:reg6
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block3:
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[ 40] Mov dst:reg5, src:reg6
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[ 50] GetById dst:reg6, base:reg6, `x`
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[ 70] JumpNullish condition:reg6, true_target:block1, false_target:block4
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block4:
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[ 80] Mov dst:reg5, src:reg6
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[ 90] GetById dst:reg6, base:reg6, `y`
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[ b0] Return value:reg6
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call_no_args$4730b337 optional-chain.js:13:5
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Registers: 8
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Blocks: 4
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Constants:
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[0] = Undefined
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block0:
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[ 0] Mov2 dst1:reg5, src1:Undefined, dst2:reg6, src2:arg0
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[ 18] JumpNullish condition:reg6, true_target:block1, false_target:block3
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block1:
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[ 28] Mov dst:reg6, src:Undefined
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block2:
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[ 38] Return value:reg6
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block3:
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[ 40] Mov dst:reg5, src:reg6
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[ 50] GetById dst:reg6, base:reg6, `foo`
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[ 70] NewArray dst:reg7
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[ 80] CallWithArgumentArray dst:reg6, callee:reg6, this_value:reg5, arguments:reg7
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[ 98] Mov dst:reg5, src:Undefined
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[ a8] Return value:reg6
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call_with_args$880276bf optional-chain.js:16:5
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Registers: 11
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Blocks: 4
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Constants:
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[0] = Undefined
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[1] = Int32(1)
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[2] = Int32(2)
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[3] = Int32(3)
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block0:
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[ 0] Mov2 dst1:reg5, src1:Undefined, dst2:reg6, src2:arg0
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[ 18] JumpNullish condition:reg6, true_target:block1, false_target:block3
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block1:
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[ 28] Mov dst:reg6, src:Undefined
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block2:
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[ 38] Return value:reg6
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block3:
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[ 40] Mov dst:reg5, src:reg6
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[ 50] GetById dst:reg6, base:reg6, `foo`
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[ 70] Mov3 dst1:reg8, src1:Int32(1), dst2:reg9, src2:Int32(2), dst3:reg10, src3:Int32(3)
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[ 90] NewArray dst:reg7, elements:[reg8, reg9, reg10]
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[ b0] CallWithArgumentArray dst:reg6, callee:reg6, this_value:reg5, arguments:reg7
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[ c8] Mov dst:reg5, src:Undefined
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[ d8] Return value:reg6
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computed$ae9e607c optional-chain.js:19:5
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Registers: 7
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Blocks: 4
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Constants:
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[0] = Undefined
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[1] = String("hello")
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block0:
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[ 0] Mov2 dst1:reg5, src1:Undefined, dst2:reg6, src2:arg0
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[ 18] JumpNullish condition:reg6, true_target:block1, false_target:block3
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block1:
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[ 28] Mov dst:reg6, src:Undefined
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block2:
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[ 38] Return value:reg6
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block3:
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[ 40] Mov dst:reg5, src:reg6
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[ 50] GetById dst:reg6, base:reg6, `hello`
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[ 70] Return value:reg6
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member_then_call$4f64d681 optional-chain.js:22:5
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Registers: 8
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Blocks: 4
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Constants:
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[0] = Undefined
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block0:
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[ 0] Mov2 dst1:reg5, src1:Undefined, dst2:reg6, src2:arg0
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[ 18] JumpNullish condition:reg6, true_target:block1, false_target:block3
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block1:
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[ 28] Mov dst:reg6, src:Undefined
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block2:
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[ 38] Return value:reg6
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block3:
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[ 40] Mov dst:reg5, src:reg6
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[ 50] GetById dst:reg6, base:reg6, `x`
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[ 70] Mov dst:reg5, src:reg6
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[ 80] GetById dst:reg6, base:reg6, `foo`
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[ a0] NewArray dst:reg7
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[ b0] CallWithArgumentArray dst:reg6, callee:reg6, this_value:reg5, arguments:reg7
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[ c8] Mov dst:reg5, src:Undefined
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[ d8] Return value:reg6
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