Fix first Slot instruction that uses builder

now without method_missing and names
but still with instance_eval, hmm. Tried without, makes code much less readable

lib/risc/builder.rb

@@ -142,6 +142,9 @@ module Risc
       return ins
     end
 
+    def load_object(object)
+      @compiler.load_object(object)
+    end
     # for some methods that return an integer it is beneficial to pre allocate the
     # integer and store it in the return value. That is what this function does.
     #

lib/risc/callable_compiler.rb

@@ -96,6 +96,7 @@ module Risc
     def load_object( object )
       raise "must be Parfait, not #{object.class}" unless object.is_a?(Parfait::Object)
       ins = Risc.load_constant("load to #{object.type}" , object)
+      ins.register.set_compiler(self)
       add_code ins
       # todo for constants (not objects)
       # add_constant(right) if compiler

lib/slot_machine/instruction/truth_check.rb

@@ -20,13 +20,13 @@ module SlotMachine
 
     def to_risc(compiler)
       false_label = @false_label.risc_label(compiler)
-      builder = compiler.builder("TruthCheck")
       condition_reg = @condition.to_register(compiler,self)
-      builder.build do
-        object! << Parfait.object_space.false_object
+      
+      compiler.build(self.to_s) do
+        object = load_object Parfait.object_space.false_object
         object.op :- , condition_reg
         if_zero false_label
-        object << Parfait.object_space.nil_object
+        object = load_object Parfait.object_space.nil_object
         object.op :- , condition_reg
         if_zero false_label
       end