fix imports and name issues

lib/virtual/compiled_method.rb

@@ -54,7 +54,7 @@ module Virtual
     # add an instruction after the current (insertion point)
     # the added instruction will become the new insertion point
     def add_code instruction
-      raise instruction.inspect unless instruction.is_a? Instruction
+      raise instruction.inspect unless (instruction.is_a?(Instruction) or instruction.is_a?(Register::Instruction))
       @current.add_code(instruction) #insert after current
       self
     end

lib/virtual/machine.rb

@@ -87,6 +87,7 @@ require_relative "boot_space"
 require_relative "passes/send_implementation"
 require_relative "passes/get_implementation"
 require_relative "passes/frame_implementation"
+require_relative "passes/enter_implementation"
 
 Sof::Volotile.add(Virtual::Block ,  [:method])
 Sof::Volotile.add(Virtual::CompiledMethod ,  [:current])