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cpython/Lib/test/test_optimizer.py
Guido van Rossum 7d83f7bcc4
gh-118335: Configure Tier 2 interpreter at build time (#118339)
The code for Tier 2 is now only compiled when configured
with `--enable-experimental-jit[=yes|interpreter]`.

We drop support for `PYTHON_UOPS` and -`Xuops`,
but you can disable the interpreter or JIT
at runtime by setting `PYTHON_JIT=0`.
You can also build it without enabling it by default
using `--enable-experimental-jit=yes-off`;
enable with `PYTHON_JIT=1`.

On Windows, the `build.bat` script supports
`--experimental-jit`, `--experimental-jit-off`,
`--experimental-interpreter`.

In the C code, `_Py_JIT` is defined as before
when the JIT is enabled; the new variable
`_Py_TIER2` is defined when the JIT *or* the
interpreter is enabled. It is actually a bitmask:
1: JIT; 2: default-off; 4: interpreter.
2024-04-30 18:26:34 -07:00

91 lines
2.6 KiB
Python

import unittest
import types
from test.support import import_helper
_testinternalcapi = import_helper.import_module("_testinternalcapi")
class TestRareEventCounters(unittest.TestCase):
def setUp(self):
_testinternalcapi.reset_rare_event_counters()
def test_set_class(self):
class A:
pass
class B:
pass
a = A()
orig_counter = _testinternalcapi.get_rare_event_counters()["set_class"]
a.__class__ = B
self.assertEqual(
orig_counter + 1,
_testinternalcapi.get_rare_event_counters()["set_class"]
)
def test_set_bases(self):
class A:
pass
class B:
pass
class C(B):
pass
orig_counter = _testinternalcapi.get_rare_event_counters()["set_bases"]
C.__bases__ = (A,)
self.assertEqual(
orig_counter + 1,
_testinternalcapi.get_rare_event_counters()["set_bases"]
)
def test_set_eval_frame_func(self):
orig_counter = _testinternalcapi.get_rare_event_counters()["set_eval_frame_func"]
_testinternalcapi.set_eval_frame_record([])
self.assertEqual(
orig_counter + 1,
_testinternalcapi.get_rare_event_counters()["set_eval_frame_func"]
)
_testinternalcapi.set_eval_frame_default()
def test_builtin_dict(self):
orig_counter = _testinternalcapi.get_rare_event_counters()["builtin_dict"]
if isinstance(__builtins__, types.ModuleType):
builtins = __builtins__.__dict__
else:
builtins = __builtins__
builtins["FOO"] = 42
self.assertEqual(
orig_counter + 1,
_testinternalcapi.get_rare_event_counters()["builtin_dict"]
)
del builtins["FOO"]
def test_func_modification(self):
def func(x=0):
pass
for attribute in (
"__code__",
"__defaults__",
"__kwdefaults__"
):
orig_counter = _testinternalcapi.get_rare_event_counters()["func_modification"]
setattr(func, attribute, getattr(func, attribute))
self.assertEqual(
orig_counter + 1,
_testinternalcapi.get_rare_event_counters()["func_modification"]
)
class TestOptimizerSymbols(unittest.TestCase):
@unittest.skipUnless(hasattr(_testinternalcapi, "uop_symbols_test"),
"requires _testinternalcapi.uop_symbols_test")
def test_optimizer_symbols(self):
_testinternalcapi.uop_symbols_test()
if __name__ == "__main__":
unittest.main()