Bytecode for a simple numeric loop in JRuby

gistfile1.txt

  public static RUBY$method$foo$1(Lorg/jruby/runtime/ThreadContext;Lorg/jruby/parser/StaticScope;Lorg/jruby/runtime/builtin/IRubyObject;Lorg/jruby/runtime/Block;Lorg/jruby/RubyModule;Ljava/lang/String;)Lorg/jruby/runtime/builtin/IRubyObject;
   L0
    NOP
    NOP
   L1
    LINENUMBER 2 L1
    ALOAD 0
    INVOKEDYNAMIC fixnum(Lorg/jruby/runtime/ThreadContext;)Lorg/jruby/runtime/builtin/IRubyObject; [
      // handle kind 0x6 : INVOKESTATIC
      org/jruby/ir/targets/FixnumObjectSite.bootstrap(Ljava/lang/invoke/MethodHandles$Lookup;Ljava/lang/String;Ljava/lang/invoke/MethodType;J)Ljava/lang/invoke/CallSite;
      // arguments:
      0
    ]
    ASTORE 7
   L2
    LINENUMBER 3 L2
   FRAME APPEND [T org/jruby/runtime/builtin/IRubyObject]
    NOP
    ALOAD 0
    ALOAD 2
    ALOAD 7
    INVOKEDYNAMIC fixnumOperator:\=\^(Lorg/jruby/runtime/ThreadContext;Lorg/jruby/runtime/builtin/IRubyObject;Lorg/jruby/runtime/builtin/IRubyObject;)Lorg/jruby/runtime/builtin/IRubyObject; [
      // handle kind 0x6 : INVOKESTATIC
      org/jruby/runtime/invokedynamic/MathLinker.fixnumOperatorBootstrap(Ljava/lang/invoke/MethodHandles$Lookup;Ljava/lang/String;Ljava/lang/invoke/MethodType;JILjava/lang/String;I)Ljava/lang/invoke/CallSite;
      // arguments:
      10000000, 
      0, 
      "", 
      0
    ]
    ASTORE 8
    ALOAD 8
    INVOKEINTERFACE org/jruby/runtime/builtin/IRubyObject.isTrue ()Z
    IFEQ L3
    NOP
    ALOAD 0
    INVOKEDYNAMIC checkpoint(Lorg/jruby/runtime/ThreadContext;)V [
      // handle kind 0x6 : INVOKESTATIC
      org/jruby/ir/targets/Bootstrap.checkpointBootstrap(Ljava/lang/invoke/MethodHandles$Lookup;Ljava/lang/String;Ljava/lang/invoke/MethodType;)Ljava/lang/invoke/CallSite;
      // arguments: none
    ]
   L4
    LINENUMBER 4 L4
    ALOAD 0
    ALOAD 2
    ALOAD 7
    INVOKEDYNAMIC fixnumOperator:+(Lorg/jruby/runtime/ThreadContext;Lorg/jruby/runtime/builtin/IRubyObject;Lorg/jruby/runtime/builtin/IRubyObject;)Lorg/jruby/runtime/builtin/IRubyObject; [
      // handle kind 0x6 : INVOKESTATIC
      org/jruby/runtime/invokedynamic/MathLinker.fixnumOperatorBootstrap(Ljava/lang/invoke/MethodHandles$Lookup;Ljava/lang/String;Ljava/lang/invoke/MethodType;JILjava/lang/String;I)Ljava/lang/invoke/CallSite;
      // arguments:
      1, 
      0, 
      "", 
      0
    ]
    ASTORE 9
    ALOAD 9
    ASTORE 7
    GOTO L2
   L3
   FRAME APPEND [org/jruby/runtime/builtin/IRubyObject]
    NOP
    ALOAD 0
    INVOKEDYNAMIC nil(Lorg/jruby/runtime/ThreadContext;)Lorg/jruby/runtime/builtin/IRubyObject; [
      // handle kind 0x6 : INVOKESTATIC
      org/jruby/ir/targets/Bootstrap.contextValue(Ljava/lang/invoke/MethodHandles$Lookup;Ljava/lang/String;Ljava/lang/invoke/MethodType;)Ljava/lang/invoke/CallSite;
      // arguments: none
    ]
    ARETURN
   L5
   FRAME FULL [] [java/lang/Throwable]
    ATHROW
   L6
    LOCALVARIABLE $context Lorg/jruby/runtime/ThreadContext; L0 L6 0
    LOCALVARIABLE $scope Lorg/jruby/parser/StaticScope; L0 L6 1
    LOCALVARIABLE $self Lorg/jruby/runtime/builtin/IRubyObject; L0 L6 2
    LOCALVARIABLE $blockArg Lorg/jruby/runtime/Block; L0 L6 3
    LOCALVARIABLE $class Lorg/jruby/RubyModule; L0 L6 4
    LOCALVARIABLE $callName Ljava/lang/String; L0 L6 5
    LOCALVARIABLE $dynamicScope Lorg/jruby/runtime/builtin/IRubyObject; L0 L6 6
    LOCALVARIABLE $t_i_6 Lorg/jruby/runtime/builtin/IRubyObject; L0 L6 7
    LOCALVARIABLE $v_4 Lorg/jruby/runtime/builtin/IRubyObject; L0 L6 8
    LOCALVARIABLE $v_5 Lorg/jruby/runtime/builtin/IRubyObject; L0 L6 9
    MAXSTACK = 3
    MAXLOCALS = 10
}