--- a/python/ir/instruction.py	Sat Jun 29 10:06:58 2013 +0200
+++ b/python/ir/instruction.py	Sat Jun 29 10:08:46 2013 +0200
@@ -36,9 +36,9 @@
       self.defs = []
       self.uses = []
    def delete(self):
-      for use in self.uses:
-         use.delete()
-      self.uses.clear()
+        while self.uses:
+            use = self.uses.pop()
+            use.delete()
    def addUse(self, val):
       self.uses.append(Use(self, val))
    def addDef(self, v):

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/python/testcg.py	Sat Jun 29 10:08:46 2013 +0200
@@ -0,0 +1,22 @@
+import unittest
+import ppci, codegen, ir
+import arm_cm3
+
+class testCodeGeneration(unittest.TestCase):
+    def setUp(self):
+        self.cg = codegen.CodeGenerator(arm_cm3.armtarget)
+
+    def testFunction(self):
+        m = ir.Module('tst')
+        f = ir.Function('tst')
+        m.addFunction(f)
+        bb = ir.BasicBlock('entry')
+        f.addBasicBlock(bb)
+        v = ir.Value('tst')
+        bb.addInstruction(ir.ImmLoad(v, 123))
+        m.check()
+        obj = self.cg.generate(m)
+        self.assertTrue(obj)
+
+if __name__ == '__main__':
+   unittest.main()