Create two files with Ruby VM bytecode instructions

compile.rb

def get_test_class(a_assignment)
  test_class = <<-EOF
class T
  attr_accessor(:a)

  def initialize
    @a = 42
  end

  def t(this_a=nil)
    if this_a
      #{a_assignment}
    end
    a
  end
end
EOF
  end

iseq_without_assignment = RubyVM::InstructionSequence.compile(get_test_class(nil))
iseq_with_assignment = RubyVM::InstructionSequence.compile(get_test_class('a = this_a'))

File.open('iseq_without_assignment.txt', 'w+') do |f|
  f.write(iseq_without_assignment.disassemble)
end

File.open('iseq_with_assignment.txt', 'w+') do |f|
  f.write(iseq_with_assignment.disassemble)
end