rename register to risc

seems to fit the layer much better as we really have a very reduced
instruction set

test/rubyx/fragments/collector.rb

@@ -3,6 +3,8 @@ require "register/interpreter"
 require "parser/ruby22"
 require "yaml"
 
+# An experiment to find out how much ruby there is to achieve bootstrap
+#
 class Walker < AST::Processor
   def initialize collector
     @collector = collector

test/rubyx/fragments/helper.rb

@@ -1,12 +1,12 @@
 require_relative '../helper'
-require "register/interpreter"
+require "risc/interpreter"
 require "parser/ruby22"
 
 module Rubyx
   module RubyxTests
     include CompilerHelper
-    include Register::InterpreterHelpers
-    subs = ObjectSpace.each_object(Class).select { |klass| klass < Register::Instruction }
+    include Risc::InterpreterHelpers
+    subs = ObjectSpace.each_object(Class).select { |klass| klass < Risc::Instruction }
     subs.each do |clazz|
       name = clazz.to_s
       next if name.include?("Arm")

test/rubyx/fragments/test_hello.rb

@@ -3,17 +3,17 @@ require_relative 'helper'
 module Rubyx
   class TestRubyHello < MiniTest::Test
     include RubyxTests
-    Branch = Register::Branch
-    Label = Register::Label
+    Branch = Risc::Branch
+    Label = Risc::Label
 
     def setup
       @string_input = as_main '"Hello there".putstring'
-      Register.machine.boot
+      Risc.machine.boot
       #      do_clean_compile
       RubyCompiler.compile @string_input
-      Register::Collector.collect_space
-      @interpreter = Register::Interpreter.new
-      @interpreter.start Register.machine.init
+      Risc::Collector.collect_space
+      @interpreter = Risc::Interpreter.new
+      @interpreter.start Risc.machine.init
     end
 
     def test_chain
@@ -22,16 +22,16 @@ module Rubyx
              LoadConstant, RegToSlot, FunctionCall, Label, LoadConstant,
              SlotToReg, RegToSlot, SlotToReg, LoadConstant, RegToSlot,
              LoadConstant, RegToSlot, LoadConstant, SlotToReg, RegToSlot,
-             LoadConstant, RegToSlot, RegisterTransfer, FunctionCall, Label,
+             LoadConstant, RegToSlot, RiscTransfer, FunctionCall, Label,
              LoadConstant, SlotToReg, RegToSlot, SlotToReg, SlotToReg,
-             RegisterTransfer, Syscall, RegisterTransfer, RegisterTransfer, RegToSlot,
-             Label, FunctionReturn, RegisterTransfer, SlotToReg, SlotToReg,
-             Label, FunctionReturn, RegisterTransfer, Syscall, NilClass]
+             RiscTransfer, Syscall, RiscTransfer, RiscTransfer, RegToSlot,
+             Label, FunctionReturn, RiscTransfer, SlotToReg, SlotToReg,
+             Label, FunctionReturn, RiscTransfer, Syscall, NilClass]
     end
 
     def test_overflow
       instruction = ticks( 24 )
-      assert_equal Register::FunctionCall , instruction.class
+      assert_equal Risc::FunctionCall , instruction.class
       assert_equal :putstring , instruction.method.name
     end
 

test/rubyx/passes/test_locals_collector.rb

@@ -5,7 +5,7 @@ module Rubyx
     class TestLocalsCollector < MiniTest::Test
 
       def setup
-        Register.machine.boot unless Register.machine.booted
+        Risc.machine.boot unless Risc.machine.booted
       end
 
       def parse_collect( input )

test/rubyx/passes/test_method_collector.rb

@@ -5,7 +5,7 @@ module Rubyx
     class TestMethodCollector < MiniTest::Test
 
       def setup
-        Register.machine.boot unless Register.machine.booted
+        Risc.machine.boot unless Risc.machine.booted
       end
 
       def parse_collect( input )

test/rubyx/passes/test_normalizer.rb

@@ -5,7 +5,7 @@ module Rubyx
     class TestNormalizer < MiniTest::Test
 
       def setup
-        Register.machine.boot unless Register.machine.booted
+        Risc.machine.boot unless Risc.machine.booted
       end
 
       def test_no_thing

test/rubyx/passes/test_type_collector.rb

@@ -5,7 +5,7 @@ module Rubyx
     class TestTypeCollector < MiniTest::Test
 
       def setup
-        Register.machine.boot
+        Risc.machine.boot
       end
 
       def parse_collect( input )

test/rubyx/test_ruby_compiler.rb

@@ -4,7 +4,7 @@ module Rubyx
   class TestCompiler < MiniTest::Test
 
     def setup
-      Register.machine.boot
+      Risc.machine.boot
     end
 
     def test_doesnt_create_existing_clas

test/rubyx/test_ruby_method.rb

@@ -5,7 +5,7 @@ module Rubyx
     include CompilerHelper
 
     def setup
-      Register.machine.boot
+      Risc.machine.boot
     end
 
     def create_method