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c301a21960
The callee and this-value preservation copies only matter while later argument expressions are still being evaluated. For zero-argument calls there is nothing left to clobber them, so we can keep the original operand and let the interpreter load it directly. This removes the hot Mov arg0->reg pattern from zero-argument local calls and reduces register pressure.
48 lines
1.4 KiB
Plaintext
48 lines
1.4 KiB
Plaintext
$6ef6ff9a parameter-createvariable-order.js:7:1
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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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[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] GetGlobal dst:reg6, `f`
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[ 18] Call dst:reg5, callee:reg6, this_value:Undefined, f, arguments:[Int32(1), Int32(2), Int32(3)]
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[ 48] End value:reg5
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f$40c96172 parameter-createvariable-order.js:2:5
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Registers: 6
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Blocks: 1
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Locals: inner~0
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Constants:
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[0] = Undefined
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block0:
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[ 0] CreateVariable `a`, is_immutable:false, is_global:false, is_strict:false
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[ 10] CreateVariable `b`, is_immutable:false, is_global:false, is_strict:false
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[ 20] CreateVariable `c`, is_immutable:false, is_global:false, is_strict:false
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[ 30] InitializeLexicalBinding `a`, src:arg0
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[ 48] InitializeLexicalBinding `b`, src:arg1
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[ 60] InitializeLexicalBinding `c`, src:arg2
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[ 78] Mov dst:inner~0, src:Undefined
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[ 88] NewFunction dst:reg5, shared_function_data_index:0 (inner)
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[ a0] Mov dst:inner~0, src:reg5
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[ b0] Call dst:reg5, callee:inner~0, this_value:Undefined, inner
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[ d0] Return value:reg5
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inner$350d7dbe parameter-createvariable-order.js:3:9
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Registers: 8
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Blocks: 1
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block0:
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[ 0] GetBinding dst:reg5, `a`
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[ 18] GetBinding dst:reg6, `b`
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[ 30] Add dst:reg7, lhs:reg5, rhs:reg6
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[ 40] GetBinding dst:reg5, `c`
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[ 58] Add dst:reg6, lhs:reg7, rhs:reg5
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[ 68] Return value:reg6
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