Add TBAA Builder

test/tbaa.py

@@ -0,0 +1,34 @@
+from llvm.core import *
+from llvm.tbaa import *
+import unittest
+
+class TestTBAABuilder(unittest.TestCase):
+    def test_tbaa_builder(self):
+        mod = Module.new('test_tbaa_builder')
+        fty = Type.function(Type.void(), [Type.pointer(Type.float())])
+        foo = mod.add_function(fty, 'foo')
+        bb = foo.append_basic_block('entry')
+        bldr = Builder.new(bb)
+
+        tbaa = TBAABuilder.new(mod, "tbaa.root")
+        float = tbaa.get_node('float', const=False)
+        const_float = tbaa.get_node('const float', float, const=True)
+
+
+        tbaa = TBAABuilder.new(mod, "tbaa.root")
+        old_const_float = const_float
+        del const_float
+
+        const_float = tbaa.get_node('const float', float, const=True)
+
+        self.assertIs(old_const_float, const_float)
+
+        ptr = bldr.load(foo.args[0])
+        ptr.set_metadata('tbaa', const_float)
+
+
+        bldr.ret_void()
+        print mod
+
+if __name__ == '__main__':
+    unittest.main()