зеркало из https://github.com/github/ruby.git
86 строки
1.4 KiB
YAML
86 строки
1.4 KiB
YAML
prelude: |
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IVARS = 60
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class Record
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def initialize(offset = false)
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@offset = 1 if offset
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@first = 0
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IVARS.times do |i|
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instance_variable_set("@ivar_#{i}", i)
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end
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end
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def first
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@first
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end
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def lazy_set
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@lazy_set ||= 123
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end
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def undef
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@undef
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end
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end
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Record.new # Need one alloc to right size
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BASE = Record.new
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LAZY = Record.new
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LAZY.lazy_set
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class Miss < Record
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@first = 0
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IVARS.times do |i|
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instance_variable_set("@i_#{i}", i)
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end
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end
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Miss.new # Need one alloc to right size
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MISS = Miss.new
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DIVERGENT = Record.new(true)
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benchmark:
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vm_ivar_stable_shape: |
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BASE.first
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BASE.first
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BASE.first
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BASE.first
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BASE.first
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BASE.first
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vm_ivar_memoize_unstable_shape: |
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BASE.first
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LAZY.first
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BASE.first
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LAZY.first
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BASE.first
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LAZY.first
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vm_ivar_memoize_unstable_shape_miss: |
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BASE.first
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MISS.first
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BASE.first
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MISS.first
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BASE.first
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MISS.first
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vm_ivar_unstable_undef: |
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BASE.undef
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LAZY.undef
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BASE.undef
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LAZY.undef
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BASE.undef
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LAZY.undef
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vm_ivar_divergent_shape: |
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BASE.first
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DIVERGENT.first
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BASE.first
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DIVERGENT.first
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BASE.first
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DIVERGENT.first
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vm_ivar_divergent_shape_imbalanced: |
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BASE.first
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DIVERGENT.first
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DIVERGENT.first
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DIVERGENT.first
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DIVERGENT.first
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DIVERGENT.first
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