GH-98831: Refactor and fix cases generator (#99526)

Also complete cache effects for BINARY_SUBSCR family.
This commit is contained in:
Guido van Rossum 2022-11-17 17:06:07 -08:00 committed by GitHub
parent b629fdd88a
commit 4f5e1cb00a
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GPG key ID: 4AEE18F83AFDEB23
6 changed files with 403 additions and 306 deletions

View file

@ -71,7 +71,7 @@ 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"
@ -79,6 +79,7 @@ do { \
// 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(
@ -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);
@ -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)) {
@ -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);
@ -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);
@ -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)) {
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);

View file

@ -1,4 +1,5 @@
// This file is generated by Tools/cases_generator/generate_cases.py
// from Python/bytecodes.c
// Do not edit!
TARGET(NOP) {
@ -300,6 +301,7 @@
TARGET(BINARY_SUBSCR) {
PREDICTED(BINARY_SUBSCR);
static_assert(INLINE_CACHE_ENTRIES_BINARY_SUBSCR == 4, "incorrect cache size");
PyObject *sub = PEEK(1);
PyObject *container = PEEK(2);
PyObject *res;
@ -316,9 +318,9 @@
Py_DECREF(container);
Py_DECREF(sub);
if (res == NULL) goto pop_2_error;
JUMPBY(INLINE_CACHE_ENTRIES_BINARY_SUBSCR);
STACK_SHRINK(1);
POKE(1, res);
next_instr += 4;
DISPATCH();
}
@ -366,9 +368,10 @@
}
TARGET(BINARY_SUBSCR_LIST_INT) {
PyObject *sub = PEEK(1);
PyObject *list = PEEK(2);
PyObject *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);
@ -379,21 +382,22 @@
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_SHRINK(1);
POKE(1, res);
next_instr += 4;
DISPATCH();
}
TARGET(BINARY_SUBSCR_TUPLE_INT) {
PyObject *sub = PEEK(1);
PyObject *tuple = PEEK(2);
PyObject *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);
@ -404,51 +408,54 @@
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_SHRINK(1);
POKE(1, res);
next_instr += 4;
DISPATCH();
}
TARGET(BINARY_SUBSCR_DICT) {
PyObject *sub = PEEK(1);
PyObject *dict = PEEK(2);
PyObject *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);
if (1) goto pop_2_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_SHRINK(1);
POKE(1, res);
next_instr += 4;
DISPATCH();
}
TARGET(BINARY_SUBSCR_GETITEM) {
PyObject *sub = TOP();
PyObject *container = SECOND();
_PyBinarySubscrCache *cache = (_PyBinarySubscrCache *)next_instr;
uint32_t type_version = read_u32(cache->type_version);
uint32_t type_version = read_u32(next_instr + 1);
uint16_t func_version = *(next_instr + 3);
PyObject *sub = PEEK(1);
PyObject *container = PEEK(2);
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);
@ -3656,7 +3663,7 @@
TARGET(BINARY_OP) {
PREDICTED(BINARY_OP);
assert(INLINE_CACHE_ENTRIES_BINARY_OP == 1);
static_assert(INLINE_CACHE_ENTRIES_BINARY_OP == 1, "incorrect cache size");
PyObject *rhs = PEEK(1);
PyObject *lhs = PEEK(2);
PyObject *res;