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ruby--ruby/benchmark/vm_gc_wb_obj_promoted.yml

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prelude: |
class C
attr_accessor :foo
end
long_lived = C.new
if RUBY_VERSION >= "2.2.0"
3.times{ GC.start(full_mark: false, immediate_mark: true, immediate_sweep: true) }
elsif
GC.start
end
short_lived = ''
benchmark:
vm_gc_wb_obj_promoted: |
long_lived.foo = short_lived # write barrier
loop_count: 30000000