remove the last use of an add_xx function, closing #9

lib/risc/builder.rb

@@ -137,20 +137,6 @@ module Risc
         to[Parfait::Integer.integer_index] << from
       end
     end
-
-    # for computationally building code (ie writing assembler) these short cuts
-    # help to instantiate risc instructions and add them immediately
-    [ :slot_to_reg , :load_constant, :load_data,
-       :transfer  ].each do |method|
-      define_method("add_#{method}".to_sym) do |*args|
-        if not @source_used
-          args[0] = @source
-          @source_used = true
-        end
-        add_code Risc.send( method , *args )
-      end
-    end
-
   end
 
 

lib/risc/builtin/object.rb

@@ -87,10 +87,11 @@ module Risc
         # Assumes int return value and extracts the fixnum for process exit code
         def exit_sequence(builder)
           save_message( builder )
-          message = Risc.message_reg
-          builder.add_slot_to_reg "get return" , message , :return_value , message
-          builder.add_slot_to_reg( "reduce return" , message , Parfait::Integer.integer_index , message)
-          builder.add_code Syscall.new("emit_syscall(exit)", :exit )
+          builder.build do
+            message << message[:return_value]
+            message.reduce_int
+            add_code Syscall.new("emit_syscall(exit)", :exit )
+          end
         end
 
         # the exit function