Skip to content
New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

GH-98831: Refactor and fix cases generator #99526

Merged
merged 5 commits into from
Nov 18, 2022
Merged
Show file tree
Hide file tree
Changes from all commits
Commits
File filter

Filter by extension

Filter by extension

Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
63 changes: 25 additions & 38 deletions Python/bytecodes.c
Original file line number Diff line number Diff line change
Expand Up @@ -71,14 +71,15 @@ do { \

#define inst(name, ...) case name:
#define super(name) static int SUPER_##name
#define family(name) static int family_##name
#define family(name, ...) static int family_##name

#define NAME_ERROR_MSG \
"name '%.200s' is not defined"

// Dummy variables for stack effects.
static PyObject *value, *value1, *value2, *left, *right, *res, *sum, *prod, *sub;
static PyObject *container, *start, *stop, *v, *lhs, *rhs;
static PyObject *list, *tuple, *dict;

static PyObject *
dummy_func(
Expand Down Expand Up @@ -322,7 +323,15 @@ dummy_func(
ERROR_IF(sum == NULL, error);
}

inst(BINARY_SUBSCR, (container, sub -- res)) {
family(binary_subscr, INLINE_CACHE_ENTRIES_BINARY_SUBSCR) = {
BINARY_SUBSCR,
BINARY_SUBSCR_DICT,
BINARY_SUBSCR_GETITEM,
BINARY_SUBSCR_LIST_INT,
BINARY_SUBSCR_TUPLE_INT,
};

inst(BINARY_SUBSCR, (container, sub, unused/4 -- res)) {
_PyBinarySubscrCache *cache = (_PyBinarySubscrCache *)next_instr;
if (ADAPTIVE_COUNTER_IS_ZERO(cache->counter)) {
assert(cframe.use_tracing == 0);
Expand All @@ -336,7 +345,6 @@ dummy_func(
Py_DECREF(container);
Py_DECREF(sub);
ERROR_IF(res == NULL, error);
JUMPBY(INLINE_CACHE_ENTRIES_BINARY_SUBSCR);
}

inst(BINARY_SLICE, (container, start, stop -- res)) {
Expand Down Expand Up @@ -369,11 +377,8 @@ dummy_func(
ERROR_IF(err, error);
}

// stack effect: (__0 -- )
inst(BINARY_SUBSCR_LIST_INT) {
inst(BINARY_SUBSCR_LIST_INT, (list, sub, unused/4 -- res)) {
assert(cframe.use_tracing == 0);
PyObject *sub = TOP();
PyObject *list = SECOND();
DEOPT_IF(!PyLong_CheckExact(sub), BINARY_SUBSCR);
DEOPT_IF(!PyList_CheckExact(list), BINARY_SUBSCR);

Expand All @@ -384,21 +389,15 @@ dummy_func(
Py_ssize_t index = ((PyLongObject*)sub)->ob_digit[0];
DEOPT_IF(index >= PyList_GET_SIZE(list), BINARY_SUBSCR);
STAT_INC(BINARY_SUBSCR, hit);
PyObject *res = PyList_GET_ITEM(list, index);
res = PyList_GET_ITEM(list, index);
assert(res != NULL);
Py_INCREF(res);
STACK_SHRINK(1);
_Py_DECREF_SPECIALIZED(sub, (destructor)PyObject_Free);
SET_TOP(res);
Py_DECREF(list);
JUMPBY(INLINE_CACHE_ENTRIES_BINARY_SUBSCR);
}

// stack effect: (__0 -- )
inst(BINARY_SUBSCR_TUPLE_INT) {
inst(BINARY_SUBSCR_TUPLE_INT, (tuple, sub, unused/4 -- res)) {
assert(cframe.use_tracing == 0);
PyObject *sub = TOP();
PyObject *tuple = SECOND();
DEOPT_IF(!PyLong_CheckExact(sub), BINARY_SUBSCR);
DEOPT_IF(!PyTuple_CheckExact(tuple), BINARY_SUBSCR);

Expand All @@ -409,51 +408,39 @@ dummy_func(
Py_ssize_t index = ((PyLongObject*)sub)->ob_digit[0];
DEOPT_IF(index >= PyTuple_GET_SIZE(tuple), BINARY_SUBSCR);
STAT_INC(BINARY_SUBSCR, hit);
PyObject *res = PyTuple_GET_ITEM(tuple, index);
res = PyTuple_GET_ITEM(tuple, index);
assert(res != NULL);
Py_INCREF(res);
STACK_SHRINK(1);
_Py_DECREF_SPECIALIZED(sub, (destructor)PyObject_Free);
SET_TOP(res);
Py_DECREF(tuple);
JUMPBY(INLINE_CACHE_ENTRIES_BINARY_SUBSCR);
}

// stack effect: (__0 -- )
inst(BINARY_SUBSCR_DICT) {
inst(BINARY_SUBSCR_DICT, (dict, sub, unused/4 -- res)) {
assert(cframe.use_tracing == 0);
PyObject *dict = SECOND();
DEOPT_IF(!PyDict_CheckExact(SECOND()), BINARY_SUBSCR);
DEOPT_IF(!PyDict_CheckExact(dict), BINARY_SUBSCR);
STAT_INC(BINARY_SUBSCR, hit);
PyObject *sub = TOP();
PyObject *res = PyDict_GetItemWithError(dict, sub);
res = PyDict_GetItemWithError(dict, sub);
if (res == NULL) {
if (!_PyErr_Occurred(tstate)) {
_PyErr_SetKeyError(sub);
}
goto error;
Py_DECREF(dict);
Py_DECREF(sub);
ERROR_IF(1, error);
}
Py_INCREF(res);
STACK_SHRINK(1);
Py_DECREF(sub);
SET_TOP(res);
Py_INCREF(res); // Do this before DECREF'ing dict, sub
Py_DECREF(dict);
JUMPBY(INLINE_CACHE_ENTRIES_BINARY_SUBSCR);
Py_DECREF(sub);
}

// stack effect: (__0 -- )
inst(BINARY_SUBSCR_GETITEM) {
PyObject *sub = TOP();
PyObject *container = SECOND();
_PyBinarySubscrCache *cache = (_PyBinarySubscrCache *)next_instr;
uint32_t type_version = read_u32(cache->type_version);
inst(BINARY_SUBSCR_GETITEM, (container, sub, unused/1, type_version/2, func_version/1 -- unused)) {
Copy link
Member

Choose a reason for hiding this comment

The reason will be displayed to describe this comment to others. Learn more.

Super cool to see the cache reads in action!

PyTypeObject *tp = Py_TYPE(container);
DEOPT_IF(tp->tp_version_tag != type_version, BINARY_SUBSCR);
assert(tp->tp_flags & Py_TPFLAGS_HEAPTYPE);
PyObject *cached = ((PyHeapTypeObject *)tp)->_spec_cache.getitem;
assert(PyFunction_Check(cached));
PyFunctionObject *getitem = (PyFunctionObject *)cached;
DEOPT_IF(getitem->func_version != cache->func_version, BINARY_SUBSCR);
DEOPT_IF(getitem->func_version != func_version, BINARY_SUBSCR);
PyCodeObject *code = (PyCodeObject *)getitem->func_code;
assert(code->co_argcount == 2);
DEOPT_IF(!_PyThreadState_HasStackSpace(tstate, code->co_framesize), BINARY_SUBSCR);
Expand Down
65 changes: 36 additions & 29 deletions Python/generated_cases.c.h

Some generated files are not rendered by default. Learn more about how customized files appear on GitHub.

Loading