basic liveliness for allocator

test/risc/test_standard_allocator.rb

@@ -26,6 +26,13 @@ module Risc
     def test_platform
       assert_equal Arm::ArmPlatform , @allocator.platform.class
     end
+    def test_allocate_runs
+      assert @allocator.allocate_regs
+    end
+    def test_live
+      live = @allocator.determine_liveness
+      assert_equal 0 , live.length
+    end
     def test_add_ok
       assert_equal RegisterValue, @allocator.use_reg(tmp_reg).class
     end

test/risc/test_standard_allocator1.rb

@@ -0,0 +1,22 @@
+require_relative "../helper"
+
+module Risc
+  class TestStandardAllocator1 < MiniTest::Test
+    include SlotMachineCompile
+    def setup
+      coll = compile_slot( "class Space ; def main(); main{return 'Ho'};return 'Hi'; end; end;")
+      @compiler = coll.to_risc.method_compilers
+      @allocator = Platform.for(:arm).allocator(@compiler)
+    end
+    def test_main
+      assert_equal :main , @compiler.callable.name
+    end
+    def test_allocate_runs
+      assert @allocator.allocate_regs
+    end
+    def test_live_length
+      live = @allocator.determine_liveness
+      assert_equal 10 , live.length
+    end
+  end
+end

test/support/compiling.rb

@@ -4,7 +4,7 @@ module ScopeHelper
 
   def compiler_with_main(options = {})
     compiler = RubyX::RubyXCompiler.new(RubyX.default_test_options.merge(options))
-    compiler.ruby_to_sol( in_Space( as_main("return")) )
+    compiler.ruby_to_sol( as_main("return 5") )
     compiler
   end
   def in_Test(statements)