# Ruby Version >= 1.9

def a
  print 1 + 1
end

puts RubyVM::InstructionSequence.disasm method(:a)

output = <=========
0000 trace            8                                               (   4)
0002 trace            1                                               (   5)
0004 putself          
0005 putobject_OP_INT2FIX_O_1_C_ 
0006 putobject_OP_INT2FIX_O_1_C_ 
0007 opt_plus         
0009 opt_send_simple  
0011 trace            16                                              (   6)
0013 leave                                                            (   5)
EOF