diff options
Diffstat (limited to 'Lib')
| -rw-r--r-- | Lib/test/test_capi/test_opt.py | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/Lib/test/test_capi/test_opt.py b/Lib/test/test_capi/test_opt.py index ba7bcb4540a..651148336f7 100644 --- a/Lib/test/test_capi/test_opt.py +++ b/Lib/test/test_capi/test_opt.py @@ -1942,6 +1942,23 @@ class TestUopsOptimization(unittest.TestCase): self.assertNotIn("_COMPARE_OP_INT", uops) self.assertNotIn("_GUARD_IS_TRUE_POP", uops) + def test_call_isinstance_guards_removed(self): + def testfunc(n): + x = 0 + for _ in range(n): + y = isinstance(42, int) + if y: + x += 1 + return x + + res, ex = self._run_with_optimizer(testfunc, TIER2_THRESHOLD) + self.assertEqual(res, TIER2_THRESHOLD) + self.assertIsNotNone(ex) + uops = get_opnames(ex) + self.assertIn("_CALL_ISINSTANCE", uops) + self.assertNotIn("_GUARD_THIRD_NULL", uops) + self.assertNotIn("_GUARD_CALLABLE_ISINSTANCE", uops) + def global_identity(x): return x |