ruby/benchmark/bm_vm2_poly_singleton.rb

class C1
  def m; 1; end
end

o1 = C1.new
o2 = C1.new
o2.singleton_class

i = 0
while i<6_000_000 # benchmark loop 2
  o = (i % 2 == 0) ? o1 : o2
  o.m; o.m; o.m; o.m; o.m; o.m; o.m; o.m
  i += 1
end