split the if test into a plain and one with call

test/register/interpreter/test_called_if.rb

@@ -0,0 +1,50 @@
+require_relative "helper"
+
+class IfTest < MiniTest::Test
+  include Ticker
+  include Compiling
+
+  def setup
+    @string_input = <<HERE
+class Space
+  int itest(int n)
+    if_zero( n - 12)
+      "then".putstring()
+    else
+      "else".putstring()
+    end
+  end
+
+  int main()
+    itest(20)
+  end
+end
+HERE
+    @input = s(:statements, s(:call, s(:name, :itest), s(:arguments, s(:int, 20))))
+    super
+  end
+
+  # must be after boot, but before main compile, to define method
+  def do_clean_compile
+    clean_compile :Space , :itest , {:n => :Integer} ,
+          s(:statements, s(:if_statement, :zero, s(:condition, s(:operator_value, :-, s(:name, :n), s(:int, 12))),
+                  s(:true_statements, s(:call, s(:name, :putstring), s(:arguments), s(:receiver, s(:string, "then")))),
+                  s(:false_statements, s(:call, s(:name, :putstring), s(:arguments), s(:receiver, s(:string, "else"))))))
+  end
+  def test_if
+      #show_ticks # get output of what is
+      check_chain ["Branch","Label","LoadConstant","SlotToReg","RegToSlot",
+     "LoadConstant","RegToSlot","FunctionCall","Label","SlotToReg",
+     "SlotToReg","RegToSlot","LoadConstant","RegToSlot","LoadConstant",
+     "RegToSlot","LoadConstant","RegToSlot","LoadConstant","RegToSlot",
+     "RegisterTransfer","FunctionCall","Label","SlotToReg","LoadConstant",
+     "OperatorInstruction","IsZero","SlotToReg","LoadConstant","RegToSlot",
+     "LoadConstant","RegToSlot","LoadConstant","RegToSlot","LoadConstant",
+     "RegToSlot","RegisterTransfer","FunctionCall","Label","SlotToReg",
+     "SlotToReg","RegisterTransfer","Syscall","RegisterTransfer","RegisterTransfer",
+     "RegToSlot","Label","FunctionReturn","RegisterTransfer","SlotToReg",
+     "SlotToReg","Branch","Label","Label","FunctionReturn",
+     "RegisterTransfer","SlotToReg","SlotToReg","Label","FunctionReturn",
+     "RegisterTransfer","Syscall","NilClass"]
+  end
+end