Ruby VM Instruction Sequence

result

== disasm: <RubyVM::InstructionSequence:<compiled>@<compiled>>==========
0000 trace            1                                               (   1)
0002 putspecialobject 1
0004 putspecialobject 2
0006 putobject        :foo
0008 putiseq          foo
0010 opt_send_simple  <callinfo!mid:core#define_method, argc:3, ARGS_SKIP>
0012 pop
0013 trace            1                                               (   4)
0015 putself
0016 putself
0017 opt_send_simple  <callinfo!mid:foo, argc:0, FCALL|VCALL|ARGS_SKIP>
0019 putstring        "world"
0021 opt_plus         <callinfo!mid:+, argc:1, ARGS_SKIP>
0023 opt_send_simple  <callinfo!mid:puts, argc:1, FCALL|ARGS_SKIP>
0025 leave
== disasm: <RubyVM::InstructionSequence:foo@<compiled>>=================
0000 trace            8                                               (   1)
0002 trace            1                                               (   2)
0004 putstring        "hello "
0006 trace            16                                              (   3)
0008 leave                                                            (   2)

rubyvm_hello_world.rb

ins = RubyVM::InstructionSequence.new <<-RUBIES
def foo
  "hello "
end
puts foo + "world"
RUBIES
puts ins.disasm