ruby--ruby/benchmark/vm_attr_ivar.yml

prelude: |
  class C
    attr_reader :a, :b
    def initialize
      @a = nil
      @b = nil
    end
  end
  obj = C.new  
benchmark:
  vm_attr_ivar: |
    j = obj.a
    k = obj.b    
loop_count: 30000000