FazBrowse GitHub Viewer | Trending |
URL:
| Home
Tools: [Download Repo ZIP]   [Original HTTPS Page]

GH-100288: Specialize class attribute loads by brandtbucher · Pull Request #101379 · python/cpython · GitHub

/ cpython Public

GH-100288: Specialize class attribute loads #101379

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.

Sign up for GitHub

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

Closed
brandtbucher wants to merge 1 commit into from
Conversation 3 Commits 1 Checks 0 Files changed
Closed

GH-100288: Specialize class attribute loads #101379

Show file tree
Hide file tree
Changes from all commits
Commits
Show all changes
1 commit
Select commit
File filter

Filter by extension

Filter by extension .c  (2) .h  (5) .py  (1) All 3 file types selected
Viewed files
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Unified
Split
Hide whitespace
Diff view
Unified
Split
Hide whitespace
24 changes: 12 additions & 12 deletions Include/internal/pycore_opcode.h
Show comments
View file
Open in desktop

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

49 changes: 25 additions & 24 deletions Include/opcode.h
Show comments
View file
Open in desktop

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

1 change: 1 addition & 0 deletions Lib/opcode.py
Show comments
View file
Open in desktop
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters. Learn more about bidirectional Unicode characters
Show hidden characters
Original file line number Diff line number Diff line change
Expand Up @@ -328,6 +328,7 @@ def pseudo_op(name, op, real_ops):
"LOAD_ATTR": [
# These potentially push [NULL, bound method] onto the stack.
"LOAD_ATTR_CLASS",
"LOAD_ATTR_CLASS_FROM_INSTANCE",
"LOAD_ATTR_GETATTRIBUTE_OVERRIDDEN",
"LOAD_ATTR_INSTANCE_VALUE",
"LOAD_ATTR_MODULE",
Expand Down
26 changes: 26 additions & 0 deletions Python/bytecodes.c
Show comments
View file
Open in desktop
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters. Learn more about bidirectional Unicode characters
Show hidden characters
Original file line number Diff line number Diff line change
Expand Up @@ -1636,6 +1636,32 @@ dummy_func(
JUMPBY(INLINE_CACHE_ENTRIES_LOAD_ATTR);
}

// error: LOAD_ATTR has irregular stack effect
inst(LOAD_ATTR_CLASS_FROM_INSTANCE) {
assert(cframe.use_tracing == 0);
_PyLoadMethodCache *cache = (_PyLoadMethodCache *)next_instr;
PyObject *self = TOP();
PyTypeObject *cls = Py_TYPE(self);
uint32_t type_version = read_u32(cache->type_version);
DEOPT_IF(cls->tp_version_tag != type_version, LOAD_ATTR);
assert(cls->tp_flags & Py_TPFLAGS_MANAGED_DICT);
assert(cls->tp_version_tag);
PyDictOrValues dorv = *_PyObject_DictOrValuesPointer(self);
DEOPT_IF(!_PyDictOrValues_IsValues(dorv), LOAD_ATTR);
PyDictKeysObject *keys = ((PyHeapTypeObject *)cls)->ht_cached_keys;
uint32_t keys_version = read_u32(cache->keys_version);
DEOPT_IF(keys->dk_version != keys_version, LOAD_ATTR);
STAT_INC(LOAD_ATTR, hit);
PyObject *res = read_obj(cache->descr);
assert(res);
Py_INCREF(res);
SET_TOP(NULL);
STACK_GROW((oparg & 1));
SET_TOP(res);
Py_DECREF(self);
JUMPBY(INLINE_CACHE_ENTRIES_LOAD_ATTR);
}

// error: LOAD_ATTR has irregular stack effect
inst(LOAD_ATTR_PROPERTY) {
assert(cframe.use_tracing == 0);
Expand Down
26 changes: 26 additions & 0 deletions Python/generated_cases.c.h
Show comments
View file
Open in desktop

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

1 change: 1 addition & 0 deletions Python/opcode_metadata.h
Show comments
View file
Open in desktop
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters. Learn more about bidirectional Unicode characters
Show hidden characters
Original file line number Diff line number Diff line change
Expand Up @@ -107,6 +107,7 @@ static const struct {
[LOAD_ATTR_WITH_HINT] = { -1, -1, DIR_NONE, DIR_NONE, DIR_NONE, true, INSTR_FMT_IB },
[LOAD_ATTR_SLOT] = { -1, -1, DIR_NONE, DIR_NONE, DIR_NONE, true, INSTR_FMT_IB },
[LOAD_ATTR_CLASS] = { -1, -1, DIR_NONE, DIR_NONE, DIR_NONE, true, INSTR_FMT_IB },
[LOAD_ATTR_CLASS_FROM_INSTANCE] = { -1, -1, DIR_NONE, DIR_NONE, DIR_NONE, true, INSTR_FMT_IB },
[LOAD_ATTR_PROPERTY] = { -1, -1, DIR_NONE, DIR_NONE, DIR_NONE, true, INSTR_FMT_IB },
[LOAD_ATTR_GETATTRIBUTE_OVERRIDDEN] = { -1, -1, DIR_NONE, DIR_NONE, DIR_NONE, true, INSTR_FMT_IB },
[STORE_ATTR_INSTANCE_VALUE] = { 2, 0, DIR_NONE, DIR_NONE, DIR_NONE, true, INSTR_FMT_IXC000 },
Expand Down
22 changes: 11 additions & 11 deletions Python/opcode_targets.h
Show comments
View file
Open in desktop

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

30 changes: 25 additions & 5 deletions Python/specialize.c
Show comments
View file
Open in desktop
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters. Learn more about bidirectional Unicode characters
Show hidden characters
Original file line number Diff line number Diff line change
Expand Up @@ -851,11 +851,31 @@ _Py_Specialize_LoadAttr(PyObject *owner, _Py_CODEUNIT *instr, PyObject *name)
SPEC_FAIL_ATTR_NOT_MANAGED_DICT);
goto fail;
case NON_DESCRIPTOR:
SPECIALIZATION_FAIL(LOAD_ATTR,
(type->tp_flags & Py_TPFLAGS_MANAGED_DICT) ?
SPEC_FAIL_ATTR_CLASS_ATTR_SIMPLE :
SPEC_FAIL_ATTR_NOT_MANAGED_DICT);
goto fail;
if (!(type->tp_flags & Py_TPFLAGS_MANAGED_DICT)) {
SPECIALIZATION_FAIL(LOAD_ATTR, SPEC_FAIL_ATTR_NOT_MANAGED_DICT);
goto fail;
}
PyDictOrValues maybe_values = *_PyObject_DictOrValuesPointer(owner);
if (!_PyDictOrValues_IsValues(maybe_values)) {
SPECIALIZATION_FAIL(LOAD_ATTR, SPEC_FAIL_ATTR_HAS_MANAGED_DICT);
goto fail;
}
PyDictKeysObject *keys = ((PyHeapTypeObject *)type)->ht_cached_keys;
if (_PyDictKeys_StringLookup(keys, name) != DKIX_EMPTY) {
SPECIALIZATION_FAIL(LOAD_ATTR, SPEC_FAIL_ATTR_SHADOWED);
goto fail;
}
uint32_t keys_version = _PyDictKeys_GetVersionForCurrentState(keys);
if (keys_version == 0) {
SPECIALIZATION_FAIL(LOAD_ATTR, SPEC_FAIL_OUT_OF_VERSIONS);
goto fail;
}
_PyLoadMethodCache *cache = (_PyLoadMethodCache *)(instr + 1);
write_u32(cache->type_version, type->tp_version_tag);
write_u32(cache->keys_version, keys->dk_version);
write_obj(cache->descr, descr);
_py_set_opcode(instr, LOAD_ATTR_CLASS_FROM_INSTANCE);
goto success;
case ABSENT:
if (specialize_dict_access(owner, instr, type, kind, name, LOAD_ATTR,
LOAD_ATTR_INSTANCE_VALUE, LOAD_ATTR_WITH_HINT))
Expand Down
Back | FazBrowse Home | New Git URL