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gh-118335: Configure Tier 2 interpreter at build time (#118339)

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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.
This commit is contained in:
Guido van Rossum 2024-04-30 18:26:34 -07:00 • committed by GitHub
parent 9c468e2c5d
commit 7d83f7bcc4
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GPG key ID: B5690EEEBB952194
32 changed files with 181 additions and 42 deletions
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13
Modules/_testinternalcapi.c
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@ -985,6 +985,8 @@ get_co_framesize(PyObject *self, PyObject *arg)
return PyLong_FromLong(code->co_framesize);
}
#ifdef _Py_TIER2
static PyObject *
new_counter_optimizer(PyObject *self, PyObject *arg)
{
@ -1012,7 +1014,10 @@ set_optimizer(PyObject *self, PyObject *opt)
static PyObject *
get_optimizer(PyObject *self, PyObject *Py_UNUSED(ignored))
{
PyObject *opt = (PyObject *)PyUnstable_GetOptimizer();
PyObject *opt = NULL;
#ifdef _Py_TIER2
opt = (PyObject *)PyUnstable_GetOptimizer();
#endif
if (opt == NULL) {
Py_RETURN_NONE;
}
@ -1045,6 +1050,8 @@ invalidate_executors(PyObject *self, PyObject *obj)
Py_RETURN_NONE;
}
#endif
static int _pending_callback(void *arg)
{
/* we assume the argument is callable object to which we own a reference */
@ -2020,12 +2027,14 @@ static PyMethodDef module_functions[] = {
{"iframe_getline", iframe_getline, METH_O, NULL},
{"iframe_getlasti", iframe_getlasti, METH_O, NULL},
{"get_co_framesize", get_co_framesize, METH_O, NULL},
#ifdef _Py_TIER2
{"get_optimizer", get_optimizer, METH_NOARGS, NULL},
{"set_optimizer", set_optimizer, METH_O, NULL},
{"new_counter_optimizer", new_counter_optimizer, METH_NOARGS, NULL},
{"new_uop_optimizer", new_uop_optimizer, METH_NOARGS, NULL},
{"add_executor_dependency", add_executor_dependency, METH_VARARGS, NULL},
{"invalidate_executors", invalidate_executors, METH_O, NULL},
#endif
{"pending_threadfunc", _PyCFunction_CAST(pending_threadfunc),
METH_VARARGS | METH_KEYWORDS},
{"pending_identify", pending_identify, METH_VARARGS, NULL},
@ -2072,7 +2081,9 @@ static PyMethodDef module_functions[] = {
{"py_thread_id", get_py_thread_id, METH_NOARGS},
#endif
{"set_immortalize_deferred", set_immortalize_deferred, METH_VARARGS},
#ifdef _Py_TIER2
{"uop_symbols_test", _Py_uop_symbols_test, METH_NOARGS},
#endif
{NULL, NULL} /* sentinel */
};