bin/ruby-prof in ruby-prof-0.13.1 vs bin/ruby-prof in ruby-prof-0.14.0

@@ -147,11 +147,11 @@
 
         opts.on("--replace-progname", "Replace $0 when loading the .rb files.") do
           options.replace_prog_name = true
         end
 
-        if defined?(VM)
+        if defined?(RubyVM)
           opts.on("--specialized-instruction", "Turn on specified instruction.") do
             options.specialized_instruction = true
           end
         end
 
@@ -271,12 +271,12 @@
       if options.replace_prog_name
         $0 = File.expand_path(script)
       end
 
       # Set VM compile option
-      if defined?(VM)
-        VM::InstructionSequence.compile_option = {
+      if defined?(RubyVM)
+        RubyVM::InstructionSequence.compile_option = {
             :trace_instruction => true,
             :specialized_instruction => options.specialized_instruction
         }
       end
 
@@ -324,6 +324,6 @@
     printer.print(STDOUT, printer_options)
   end
 }
 
 # Now profile some code
-cmd.run
\ No newline at end of file
+cmd.run