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GH-100288: Remove LOAD_ATTR_METHOD_WITH_DICT instruction. (GH-100753)

This commit is contained in:
Mark Shannon 2023-01-05 12:20:09 +00:00 committed by GitHub
parent 105e37395d
commit f20c553a45
No known key found for this signature in database
GPG Key ID: 4AEE18F83AFDEB23
8 changed files with 40 additions and 95 deletions
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20
Include/internal/pycore_opcode.h generated
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@ -153,7 +153,6 @@ const uint8_t _PyOpcode_Deopt[256] = {
[LOAD_ATTR_INSTANCE_VALUE] = LOAD_ATTR,
[LOAD_ATTR_METHOD_LAZY_DICT] = LOAD_ATTR,
[LOAD_ATTR_METHOD_NO_DICT] = LOAD_ATTR,
[LOAD_ATTR_METHOD_WITH_DICT] = LOAD_ATTR,
[LOAD_ATTR_METHOD_WITH_VALUES] = LOAD_ATTR,
[LOAD_ATTR_MODULE] = LOAD_ATTR,
[LOAD_ATTR_PROPERTY] = LOAD_ATTR,
@ -313,12 +312,12 @@ static const char *const _PyOpcode_OpName[263] = {
[LOAD_ATTR_WITH_HINT] = "LOAD_ATTR_WITH_HINT",
[LOAD_ATTR_METHOD_LAZY_DICT] = "LOAD_ATTR_METHOD_LAZY_DICT",
[LOAD_ATTR_METHOD_NO_DICT] = "LOAD_ATTR_METHOD_NO_DICT",
[LOAD_ATTR_METHOD_WITH_DICT] = "LOAD_ATTR_METHOD_WITH_DICT",
[LOAD_ATTR_METHOD_WITH_VALUES] = "LOAD_ATTR_METHOD_WITH_VALUES",
[LIST_TO_TUPLE] = "LIST_TO_TUPLE",
[RETURN_VALUE] = "RETURN_VALUE",
[IMPORT_STAR] = "IMPORT_STAR",
[SETUP_ANNOTATIONS] = "SETUP_ANNOTATIONS",
[LOAD_ATTR_METHOD_WITH_VALUES] = "LOAD_ATTR_METHOD_WITH_VALUES",
[LOAD_CONST__LOAD_FAST] = "LOAD_CONST__LOAD_FAST",
[ASYNC_GEN_WRAP] = "ASYNC_GEN_WRAP",
[PREP_RERAISE_STAR] = "PREP_RERAISE_STAR",
[POP_EXCEPT] = "POP_EXCEPT",
@ -345,7 +344,7 @@ static const char *const _PyOpcode_OpName[263] = {
[JUMP_FORWARD] = "JUMP_FORWARD",
[JUMP_IF_FALSE_OR_POP] = "JUMP_IF_FALSE_OR_POP",
[JUMP_IF_TRUE_OR_POP] = "JUMP_IF_TRUE_OR_POP",
[LOAD_CONST__LOAD_FAST] = "LOAD_CONST__LOAD_FAST",
[LOAD_FAST__LOAD_CONST] = "LOAD_FAST__LOAD_CONST",
[POP_JUMP_IF_FALSE] = "POP_JUMP_IF_FALSE",
[POP_JUMP_IF_TRUE] = "POP_JUMP_IF_TRUE",
[LOAD_GLOBAL] = "LOAD_GLOBAL",
@ -353,7 +352,7 @@ static const char *const _PyOpcode_OpName[263] = {
[CONTAINS_OP] = "CONTAINS_OP",
[RERAISE] = "RERAISE",
[COPY] = "COPY",
[LOAD_FAST__LOAD_CONST] = "LOAD_FAST__LOAD_CONST",
[LOAD_FAST__LOAD_FAST] = "LOAD_FAST__LOAD_FAST",
[BINARY_OP] = "BINARY_OP",
[SEND] = "SEND",
[LOAD_FAST] = "LOAD_FAST",
@ -373,9 +372,9 @@ static const char *const _PyOpcode_OpName[263] = {
[STORE_DEREF] = "STORE_DEREF",
[DELETE_DEREF] = "DELETE_DEREF",
[JUMP_BACKWARD] = "JUMP_BACKWARD",
[LOAD_FAST__LOAD_FAST] = "LOAD_FAST__LOAD_FAST",
[CALL_FUNCTION_EX] = "CALL_FUNCTION_EX",
[LOAD_GLOBAL_BUILTIN] = "LOAD_GLOBAL_BUILTIN",
[CALL_FUNCTION_EX] = "CALL_FUNCTION_EX",
[LOAD_GLOBAL_MODULE] = "LOAD_GLOBAL_MODULE",
[EXTENDED_ARG] = "EXTENDED_ARG",
[LIST_APPEND] = "LIST_APPEND",
[SET_ADD] = "SET_ADD",
@ -385,24 +384,24 @@ static const char *const _PyOpcode_OpName[263] = {
[YIELD_VALUE] = "YIELD_VALUE",
[RESUME] = "RESUME",
[MATCH_CLASS] = "MATCH_CLASS",
[LOAD_GLOBAL_MODULE] = "LOAD_GLOBAL_MODULE",
[STORE_ATTR_INSTANCE_VALUE] = "STORE_ATTR_INSTANCE_VALUE",
[STORE_ATTR_SLOT] = "STORE_ATTR_SLOT",
[FORMAT_VALUE] = "FORMAT_VALUE",
[BUILD_CONST_KEY_MAP] = "BUILD_CONST_KEY_MAP",
[BUILD_STRING] = "BUILD_STRING",
[STORE_ATTR_SLOT] = "STORE_ATTR_SLOT",
[STORE_ATTR_WITH_HINT] = "STORE_ATTR_WITH_HINT",
[STORE_FAST__LOAD_FAST] = "STORE_FAST__LOAD_FAST",
[STORE_FAST__STORE_FAST] = "STORE_FAST__STORE_FAST",
[STORE_SUBSCR_DICT] = "STORE_SUBSCR_DICT",
[LIST_EXTEND] = "LIST_EXTEND",
[SET_UPDATE] = "SET_UPDATE",
[DICT_MERGE] = "DICT_MERGE",
[DICT_UPDATE] = "DICT_UPDATE",
[STORE_SUBSCR_DICT] = "STORE_SUBSCR_DICT",
[STORE_SUBSCR_LIST_INT] = "STORE_SUBSCR_LIST_INT",
[UNPACK_SEQUENCE_LIST] = "UNPACK_SEQUENCE_LIST",
[UNPACK_SEQUENCE_TUPLE] = "UNPACK_SEQUENCE_TUPLE",
[UNPACK_SEQUENCE_TWO_TUPLE] = "UNPACK_SEQUENCE_TWO_TUPLE",
[170] = "<170>",
[CALL] = "CALL",
[KW_NAMES] = "KW_NAMES",
[173] = "<173>",
@ -499,6 +498,7 @@ static const char *const _PyOpcode_OpName[263] = {
#endif
#define EXTRA_CASES \
case 170: \
case 173: \
case 174: \
case 175: \

33
Include/opcode.h generated
View File

@ -174,23 +174,22 @@ extern "C" {
#define LOAD_ATTR_WITH_HINT 78
#define LOAD_ATTR_METHOD_LAZY_DICT 79
#define LOAD_ATTR_METHOD_NO_DICT 80
#define LOAD_ATTR_METHOD_WITH_DICT 81
#define LOAD_ATTR_METHOD_WITH_VALUES 86
#define LOAD_CONST__LOAD_FAST 113
#define LOAD_FAST__LOAD_CONST 121
#define LOAD_FAST__LOAD_FAST 141
#define LOAD_GLOBAL_BUILTIN 143
#define LOAD_GLOBAL_MODULE 153
#define STORE_ATTR_INSTANCE_VALUE 154
#define STORE_ATTR_SLOT 158
#define STORE_ATTR_WITH_HINT 159
#define STORE_FAST__LOAD_FAST 160
#define STORE_FAST__STORE_FAST 161
#define STORE_SUBSCR_DICT 166
#define STORE_SUBSCR_LIST_INT 167
#define UNPACK_SEQUENCE_LIST 168
#define UNPACK_SEQUENCE_TUPLE 169
#define UNPACK_SEQUENCE_TWO_TUPLE 170
#define LOAD_ATTR_METHOD_WITH_VALUES 81
#define LOAD_CONST__LOAD_FAST 86
#define LOAD_FAST__LOAD_CONST 113
#define LOAD_FAST__LOAD_FAST 121
#define LOAD_GLOBAL_BUILTIN 141
#define LOAD_GLOBAL_MODULE 143
#define STORE_ATTR_INSTANCE_VALUE 153
#define STORE_ATTR_SLOT 154
#define STORE_ATTR_WITH_HINT 158
#define STORE_FAST__LOAD_FAST 159
#define STORE_FAST__STORE_FAST 160
#define STORE_SUBSCR_DICT 161
#define STORE_SUBSCR_LIST_INT 166
#define UNPACK_SEQUENCE_LIST 167
#define UNPACK_SEQUENCE_TUPLE 168
#define UNPACK_SEQUENCE_TWO_TUPLE 169
#define DO_TRACING 255
#define HAS_ARG(op) ((((op) >= HAVE_ARGUMENT) && (!IS_PSEUDO_OPCODE(op)))\

1
Lib/opcode.py
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@ -336,7 +336,6 @@ _specializations = {
# These will always push [unbound method, self] onto the stack.
"LOAD_ATTR_METHOD_LAZY_DICT",
"LOAD_ATTR_METHOD_NO_DICT",
"LOAD_ATTR_METHOD_WITH_DICT",
"LOAD_ATTR_METHOD_WITH_VALUES",
],
"LOAD_CONST": [

2
Misc/NEWS.d/next/Core and Builtins/2023-01-04-16-40-55.gh-issue-100288.hRSRaT.rst Normal file
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@ -0,0 +1,2 @@
Remove the LOAD_ATTR_METHOD_WITH_DICT specialized instruction. Stats show it
is not useful.

29
Python/bytecodes.c
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@ -2605,33 +2605,6 @@ dummy_func(
JUMPBY(INLINE_CACHE_ENTRIES_LOAD_ATTR);
}
// error: LOAD_ATTR has irregular stack effect
inst(LOAD_ATTR_METHOD_WITH_DICT) {
/* Can be either a managed dict, or a tp_dictoffset offset.*/
assert(cframe.use_tracing == 0);
PyObject *self = TOP();
PyTypeObject *self_cls = Py_TYPE(self);
_PyLoadMethodCache *cache = (_PyLoadMethodCache *)next_instr;
DEOPT_IF(self_cls->tp_version_tag != read_u32(cache->type_version),
LOAD_ATTR);
/* Treat index as a signed 16 bit value */
Py_ssize_t dictoffset = self_cls->tp_dictoffset;
assert(dictoffset > 0);
PyDictObject **dictptr = (PyDictObject**)(((char *)self)+dictoffset);
PyDictObject *dict = *dictptr;
DEOPT_IF(dict == NULL, LOAD_ATTR);
DEOPT_IF(dict->ma_keys->dk_version != read_u32(cache->keys_version),
LOAD_ATTR);
STAT_INC(LOAD_ATTR, hit);
PyObject *res = read_obj(cache->descr);
assert(res != NULL);
assert(_PyType_HasFeature(Py_TYPE(res), Py_TPFLAGS_METHOD_DESCRIPTOR));
SET_TOP(Py_NewRef(res));
PUSH(self);
JUMPBY(INLINE_CACHE_ENTRIES_LOAD_ATTR);
}
// error: LOAD_ATTR has irregular stack effect
inst(LOAD_ATTR_METHOD_NO_DICT) {
assert(cframe.use_tracing == 0);
@ -3517,7 +3490,7 @@ family(load_attr) = {
LOAD_ATTR, LOAD_ATTR_CLASS,
LOAD_ATTR_GETATTRIBUTE_OVERRIDDEN, LOAD_ATTR_INSTANCE_VALUE, LOAD_ATTR_MODULE,
LOAD_ATTR_PROPERTY, LOAD_ATTR_SLOT, LOAD_ATTR_WITH_HINT,
LOAD_ATTR_METHOD_LAZY_DICT, LOAD_ATTR_METHOD_NO_DICT, LOAD_ATTR_METHOD_WITH_DICT,
LOAD_ATTR_METHOD_LAZY_DICT, LOAD_ATTR_METHOD_NO_DICT,
LOAD_ATTR_METHOD_WITH_VALUES };
family(load_global) = {
LOAD_GLOBAL, LOAD_GLOBAL_BUILTIN,

27
Python/generated_cases.c.h generated
View File

@ -2960,33 +2960,6 @@
DISPATCH();
}
TARGET(LOAD_ATTR_METHOD_WITH_DICT) {
/* Can be either a managed dict, or a tp_dictoffset offset.*/
assert(cframe.use_tracing == 0);
PyObject *self = TOP();
PyTypeObject *self_cls = Py_TYPE(self);
_PyLoadMethodCache *cache = (_PyLoadMethodCache *)next_instr;
DEOPT_IF(self_cls->tp_version_tag != read_u32(cache->type_version),
LOAD_ATTR);
/* Treat index as a signed 16 bit value */
Py_ssize_t dictoffset = self_cls->tp_dictoffset;
assert(dictoffset > 0);
PyDictObject **dictptr = (PyDictObject**)(((char *)self)+dictoffset);
PyDictObject *dict = *dictptr;
DEOPT_IF(dict == NULL, LOAD_ATTR);
DEOPT_IF(dict->ma_keys->dk_version != read_u32(cache->keys_version),
LOAD_ATTR);
STAT_INC(LOAD_ATTR, hit);
PyObject *res = read_obj(cache->descr);
assert(res != NULL);
assert(_PyType_HasFeature(Py_TYPE(res), Py_TPFLAGS_METHOD_DESCRIPTOR));
SET_TOP(Py_NewRef(res));
PUSH(self);
JUMPBY(INLINE_CACHE_ENTRIES_LOAD_ATTR);
DISPATCH();
}
TARGET(LOAD_ATTR_METHOD_NO_DICT) {
assert(cframe.use_tracing == 0);
PyObject *self = TOP();

18
Python/opcode_targets.h generated
View File

@ -80,12 +80,12 @@ static void *opcode_targets[256] = {
&&TARGET_LOAD_ATTR_WITH_HINT,
&&TARGET_LOAD_ATTR_METHOD_LAZY_DICT,
&&TARGET_LOAD_ATTR_METHOD_NO_DICT,
&&TARGET_LOAD_ATTR_METHOD_WITH_DICT,
&&TARGET_LOAD_ATTR_METHOD_WITH_VALUES,
&&TARGET_LIST_TO_TUPLE,
&&TARGET_RETURN_VALUE,
&&TARGET_IMPORT_STAR,
&&TARGET_SETUP_ANNOTATIONS,
&&TARGET_LOAD_ATTR_METHOD_WITH_VALUES,
&&TARGET_LOAD_CONST__LOAD_FAST,
&&TARGET_ASYNC_GEN_WRAP,
&&TARGET_PREP_RERAISE_STAR,
&&TARGET_POP_EXCEPT,
@ -112,7 +112,7 @@ static void *opcode_targets[256] = {
&&TARGET_JUMP_FORWARD,
&&TARGET_JUMP_IF_FALSE_OR_POP,
&&TARGET_JUMP_IF_TRUE_OR_POP,
&&TARGET_LOAD_CONST__LOAD_FAST,
&&TARGET_LOAD_FAST__LOAD_CONST,
&&TARGET_POP_JUMP_IF_FALSE,
&&TARGET_POP_JUMP_IF_TRUE,
&&TARGET_LOAD_GLOBAL,
@ -120,7 +120,7 @@ static void *opcode_targets[256] = {
&&TARGET_CONTAINS_OP,
&&TARGET_RERAISE,
&&TARGET_COPY,
&&TARGET_LOAD_FAST__LOAD_CONST,
&&TARGET_LOAD_FAST__LOAD_FAST,
&&TARGET_BINARY_OP,
&&TARGET_SEND,
&&TARGET_LOAD_FAST,
@ -140,9 +140,9 @@ static void *opcode_targets[256] = {
&&TARGET_STORE_DEREF,
&&TARGET_DELETE_DEREF,
&&TARGET_JUMP_BACKWARD,
&&TARGET_LOAD_FAST__LOAD_FAST,
&&TARGET_CALL_FUNCTION_EX,
&&TARGET_LOAD_GLOBAL_BUILTIN,
&&TARGET_CALL_FUNCTION_EX,
&&TARGET_LOAD_GLOBAL_MODULE,
&&TARGET_EXTENDED_ARG,
&&TARGET_LIST_APPEND,
&&TARGET_SET_ADD,
@ -152,24 +152,24 @@ static void *opcode_targets[256] = {
&&TARGET_YIELD_VALUE,
&&TARGET_RESUME,
&&TARGET_MATCH_CLASS,
&&TARGET_LOAD_GLOBAL_MODULE,
&&TARGET_STORE_ATTR_INSTANCE_VALUE,
&&TARGET_STORE_ATTR_SLOT,
&&TARGET_FORMAT_VALUE,
&&TARGET_BUILD_CONST_KEY_MAP,
&&TARGET_BUILD_STRING,
&&TARGET_STORE_ATTR_SLOT,
&&TARGET_STORE_ATTR_WITH_HINT,
&&TARGET_STORE_FAST__LOAD_FAST,
&&TARGET_STORE_FAST__STORE_FAST,
&&TARGET_STORE_SUBSCR_DICT,
&&TARGET_LIST_EXTEND,
&&TARGET_SET_UPDATE,
&&TARGET_DICT_MERGE,
&&TARGET_DICT_UPDATE,
&&TARGET_STORE_SUBSCR_DICT,
&&TARGET_STORE_SUBSCR_LIST_INT,
&&TARGET_UNPACK_SEQUENCE_LIST,
&&TARGET_UNPACK_SEQUENCE_TUPLE,
&&TARGET_UNPACK_SEQUENCE_TWO_TUPLE,
&&_unknown_opcode,
&&TARGET_CALL,
&&TARGET_KW_NAMES,
&&_unknown_opcode,

5
Python/specialize.c
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@ -1091,9 +1091,8 @@ PyObject *descr, DescriptorClassification kind)
SPECIALIZATION_FAIL(LOAD_ATTR, SPEC_FAIL_ATTR_HAS_MANAGED_DICT);
goto fail;
case OFFSET_DICT:
assert(owner_cls->tp_dictoffset > 0 && owner_cls->tp_dictoffset <= INT16_MAX);
_py_set_opcode(instr, LOAD_ATTR_METHOD_WITH_DICT);
break;
SPECIALIZATION_FAIL(LOAD_ATTR, SPEC_FAIL_ATTR_NOT_MANAGED_DICT);
goto fail;
case LAZY_DICT:
assert(owner_cls->tp_dictoffset > 0 && owner_cls->tp_dictoffset <= INT16_MAX);
_py_set_opcode(instr, LOAD_ATTR_METHOD_LAZY_DICT);