--- a/python/ppci/codegen/canon.py	Sun Mar 16 11:28:47 2014 +0100
+++ b/python/ppci/codegen/canon.py	Wed Mar 19 20:24:03 2014 +0100
@@ -61,6 +61,9 @@
     elif isinstance(exp, ir.LocalVariable):
         offset = frame.allocVar(exp)
         return ir.Add(frame.fp, ir.Const(offset))
+    elif isinstance(exp, ir.GlobalVariable):
+        #frame.load_global_address(ir.label_name(exp))
+        return exp
     elif isinstance(exp, ir.Mem):
         exp.e = rewriteExp(exp.e, frame)
         return exp
@@ -74,7 +77,7 @@
         return ir.Eseq(ir.Move(t, exp), t)
     else:
         raise NotImplementedError('NI: {}, {}'.format(exp, type(exp)))
-        
+
 # The flatten functions pull out seq instructions to the sequence list.
 
 def flattenExp(exp):
@@ -89,6 +92,8 @@
     elif isinstance(exp, ir.Mem):
         exp.e, s = flattenExp(exp.e)
         return exp, s
+    elif isinstance(exp, ir.GlobalVariable):
+        return exp, []
     elif isinstance(exp, ir.Addr):
         exp.e, s = flattenExp(exp.e)
         return exp, s