improve output

lib/vm/instruction.rb

@@ -28,7 +28,14 @@ module Vm
     def opcode
       @attributes[:opcode]
     end
-
+    #abstract, only should be called from derived
+    def to_s
+      atts = @attributes.dup
+      atts.delete(:opcode)
+      atts.delete(:update_status)
+      atts.delete(:condition_code) if atts[:condition_code] == :al
+      atts.empty? ? "" : ", #{atts}"
+    end
     # returns an array of registers (RegisterUses) that this instruction uses.
     # ie for r1 = r2 + r3 
     # which in assembler is add r1 , r2 , r3
@@ -82,6 +89,9 @@ module Vm
     def regs
       @first
     end
+    def to_s
+      "#{opcode} #{@first} #{super}"
+    end
   end
   class MemoryInstruction < Instruction
     def initialize result , left , right = nil , options = {}
@@ -121,6 +131,9 @@ module Vm
     def assigns
       [@result.used_register]
     end
+    def to_s
+      "#{opcode} #{result.register_symbol} , #{left.register_symbol} , #{right.register_symbol} #{super}"
+    end
   end
   class CompareInstruction < Instruction
     def initialize left , right , options  = {}
@@ -151,6 +164,9 @@ module Vm
     def assigns
       [@to.used_register]
     end
+    def to_s
+      "#{opcode} #{@to.register_symbol} , #{@from.is_a?(Constant) ? @from.value : @from.register_symbol} #{super}"
+    end
   end
   class CallInstruction < Instruction
     def initialize first , options  = {}

lib/vm/passes.rb

@@ -34,8 +34,7 @@ module Vm
         # small todo. This does not catch condition_code that are not :al
         next if (n.attributes.length > 3) or (kode.attributes.length > 3)
         if kode.result == n.from
-          puts "KODE #{kode.inspect} , #{kode.attributes.length}"
-          puts "N #{n.inspect} , #{n.attributes.length}"
+          puts "Logic #{kode}  goes #{n}"
           kode.result = n.to
           block.codes.delete(n)
         end
@@ -57,6 +56,7 @@ module Vm
         # small todo. This does not catch condition_code that are not :al
         next if (n.attributes.length > 3) or (kode.attributes.length > 3)
         if kode.to == n.from
+          puts "Move #{kode}  goes #{n} "
           kode.to = n.to
           block.codes.delete(n)
         end
@@ -74,7 +74,7 @@ module Vm
         next if (kode.attributes.length > 3)
         if kode.to == kode.from
           block.codes.delete(kode) 
-          puts "deleted noop move in #{block.name} #{kode.inspect}"
+          puts "deleted noop move in #{block.name} #{kode}"
         end
       end
     end