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GH-131798: Split CALL_LEN into several uops (GH-133180)

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Diego Russo 2025-05-05 22:31:48 +01:00 • committed by GitHub
parent 893034cf93
commit 9cc77aaf9d
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GPG key ID: B5690EEEBB952194
11 changed files with 314 additions and 281 deletions
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32
Python/bytecodes.c
View file

@ -4337,22 +4337,25 @@ dummy_func(
_CALL_BUILTIN_FAST_WITH_KEYWORDS +
_CHECK_PERIODIC;
inst(CALL_LEN, (unused/1, unused/2, callable, self_or_null, args[oparg] -- res)) {
/* len(o) */
PyObject *callable_o = PyStackRef_AsPyObjectBorrow(callable);
macro(CALL_LEN) =
unused/1 +
unused/2 +
_GUARD_NOS_NULL +
_GUARD_CALLABLE_LEN +
_CALL_LEN;
int total_args = oparg;
if (!PyStackRef_IsNull(self_or_null)) {
args--;
total_args++;
}
DEOPT_IF(total_args != 1);
op(_GUARD_CALLABLE_LEN, (callable, unused, unused -- callable, unused, unused)){
PyObject *callable_o = PyStackRef_AsPyObjectBorrow(callable);
PyInterpreterState *interp = tstate->interp;
DEOPT_IF(callable_o != interp->callable_cache.len);
}
op(_CALL_LEN, (callable, null, arg -- res)) {
/* len(o) */
(void)null;
STAT_INC(CALL, hit);
_PyStackRef arg_stackref = args[0];
PyObject *arg = PyStackRef_AsPyObjectBorrow(arg_stackref);
Py_ssize_t len_i = PyObject_Length(arg);
PyObject *arg_o = PyStackRef_AsPyObjectBorrow(arg);
Py_ssize_t len_i = PyObject_Length(arg_o);
if (len_i < 0) {
ERROR_NO_POP();
}
@ -4361,9 +4364,8 @@ dummy_func(
if (res_o == NULL) {
ERROR_NO_POP();
}
PyStackRef_CLOSE(arg_stackref);
DEAD(args);
DEAD(self_or_null);
PyStackRef_CLOSE(arg);
DEAD(null);
PyStackRef_CLOSE(callable);
res = PyStackRef_FromPyObjectSteal(res_o);
}

42
Python/executor_cases.c.h generated
View file

@ -5788,35 +5788,31 @@
break;
}
case _CALL_LEN: {
_PyStackRef *args;
_PyStackRef self_or_null;
case _GUARD_CALLABLE_LEN: {
_PyStackRef callable;
_PyStackRef res;
oparg = CURRENT_OPARG();
args = &stack_pointer[-oparg];
self_or_null = stack_pointer[-1 - oparg];
callable = stack_pointer[-2 - oparg];
callable = stack_pointer[-3];
PyObject *callable_o = PyStackRef_AsPyObjectBorrow(callable);
int total_args = oparg;
if (!PyStackRef_IsNull(self_or_null)) {
args--;
total_args++;
}
if (total_args != 1) {
UOP_STAT_INC(uopcode, miss);
JUMP_TO_JUMP_TARGET();
}
PyInterpreterState *interp = tstate->interp;
if (callable_o != interp->callable_cache.len) {
UOP_STAT_INC(uopcode, miss);
JUMP_TO_JUMP_TARGET();
}
break;
}
case _CALL_LEN: {
_PyStackRef arg;
_PyStackRef null;
_PyStackRef callable;
_PyStackRef res;
arg = stack_pointer[-1];
null = stack_pointer[-2];
callable = stack_pointer[-3];
(void)null;
STAT_INC(CALL, hit);
_PyStackRef arg_stackref = args[0];
PyObject *arg = PyStackRef_AsPyObjectBorrow(arg_stackref);
PyObject *arg_o = PyStackRef_AsPyObjectBorrow(arg);
_PyFrame_SetStackPointer(frame, stack_pointer);
Py_ssize_t len_i = PyObject_Length(arg);
Py_ssize_t len_i = PyObject_Length(arg_o);
stack_pointer = _PyFrame_GetStackPointer(frame);
if (len_i < 0) {
JUMP_TO_ERROR();
@ -5826,10 +5822,12 @@
if (res_o == NULL) {
JUMP_TO_ERROR();
}
stack_pointer += -1;
assert(WITHIN_STACK_BOUNDS());
_PyFrame_SetStackPointer(frame, stack_pointer);
PyStackRef_CLOSE(arg_stackref);
PyStackRef_CLOSE(arg);
stack_pointer = _PyFrame_GetStackPointer(frame);
stack_pointer += -2 - oparg;
stack_pointer += -2;
assert(WITHIN_STACK_BOUNDS());
_PyFrame_SetStackPointer(frame, stack_pointer);
PyStackRef_CLOSE(callable);

90
Python/generated_cases.c.h generated
View file

@ -3414,55 +3414,61 @@
next_instr += 4;
INSTRUCTION_STATS(CALL_LEN);
static_assert(INLINE_CACHE_ENTRIES_CALL == 3, "incorrect cache size");
_PyStackRef null;
_PyStackRef callable;
_PyStackRef self_or_null;
_PyStackRef *args;
_PyStackRef arg;
_PyStackRef res;
/* Skip 1 cache entry */
/* Skip 2 cache entries */
args = &stack_pointer[-oparg];
self_or_null = stack_pointer[-1 - oparg];
callable = stack_pointer[-2 - oparg];
PyObject *callable_o = PyStackRef_AsPyObjectBorrow(callable);
int total_args = oparg;
if (!PyStackRef_IsNull(self_or_null)) {
args--;
total_args++;
// _GUARD_NOS_NULL
{
null = stack_pointer[-2];
if (!PyStackRef_IsNull(null)) {
UPDATE_MISS_STATS(CALL);
assert(_PyOpcode_Deopt[opcode] == (CALL));
JUMP_TO_PREDICTED(CALL);
}
}
if (total_args != 1) {
UPDATE_MISS_STATS(CALL);
assert(_PyOpcode_Deopt[opcode] == (CALL));
JUMP_TO_PREDICTED(CALL);
// _GUARD_CALLABLE_LEN
{
callable = stack_pointer[-3];
PyObject *callable_o = PyStackRef_AsPyObjectBorrow(callable);
PyInterpreterState *interp = tstate->interp;
if (callable_o != interp->callable_cache.len) {
UPDATE_MISS_STATS(CALL);
assert(_PyOpcode_Deopt[opcode] == (CALL));
JUMP_TO_PREDICTED(CALL);
}
}
PyInterpreterState *interp = tstate->interp;
if (callable_o != interp->callable_cache.len) {
UPDATE_MISS_STATS(CALL);
assert(_PyOpcode_Deopt[opcode] == (CALL));
JUMP_TO_PREDICTED(CALL);
// _CALL_LEN
{
arg = stack_pointer[-1];
(void)null;
STAT_INC(CALL, hit);
PyObject *arg_o = PyStackRef_AsPyObjectBorrow(arg);
_PyFrame_SetStackPointer(frame, stack_pointer);
Py_ssize_t len_i = PyObject_Length(arg_o);
stack_pointer = _PyFrame_GetStackPointer(frame);
if (len_i < 0) {
JUMP_TO_LABEL(error);
}
PyObject *res_o = PyLong_FromSsize_t(len_i);
assert((res_o != NULL) ^ (_PyErr_Occurred(tstate) != NULL));
if (res_o == NULL) {
JUMP_TO_LABEL(error);
}
stack_pointer += -1;
assert(WITHIN_STACK_BOUNDS());
_PyFrame_SetStackPointer(frame, stack_pointer);
PyStackRef_CLOSE(arg);
stack_pointer = _PyFrame_GetStackPointer(frame);
stack_pointer += -2;
assert(WITHIN_STACK_BOUNDS());
_PyFrame_SetStackPointer(frame, stack_pointer);
PyStackRef_CLOSE(callable);
stack_pointer = _PyFrame_GetStackPointer(frame);
res = PyStackRef_FromPyObjectSteal(res_o);
}
STAT_INC(CALL, hit);
_PyStackRef arg_stackref = args[0];
PyObject *arg = PyStackRef_AsPyObjectBorrow(arg_stackref);
_PyFrame_SetStackPointer(frame, stack_pointer);
Py_ssize_t len_i = PyObject_Length(arg);
stack_pointer = _PyFrame_GetStackPointer(frame);
if (len_i < 0) {
JUMP_TO_LABEL(error);
}
PyObject *res_o = PyLong_FromSsize_t(len_i);
assert((res_o != NULL) ^ (_PyErr_Occurred(tstate) != NULL));
if (res_o == NULL) {
JUMP_TO_LABEL(error);
}
_PyFrame_SetStackPointer(frame, stack_pointer);
PyStackRef_CLOSE(arg_stackref);
stack_pointer = _PyFrame_GetStackPointer(frame);
stack_pointer += -2 - oparg;
assert(WITHIN_STACK_BOUNDS());
_PyFrame_SetStackPointer(frame, stack_pointer);
PyStackRef_CLOSE(callable);
stack_pointer = _PyFrame_GetStackPointer(frame);
res = PyStackRef_FromPyObjectSteal(res_o);
stack_pointer[0] = res;
stack_pointer += 1;
assert(WITHIN_STACK_BOUNDS());

10
Python/optimizer_bytecodes.c
View file

@ -1084,10 +1084,18 @@ dummy_func(void) {
sym_set_const(callable, (PyObject *)&PyUnicode_Type);
}
op(_CALL_LEN, (callable[1], self_or_null[1], args[oparg] -- res)) {
op(_CALL_LEN, (unused, unused, unused -- res)) {
res = sym_new_type(ctx, &PyLong_Type);
}
op(_GUARD_CALLABLE_LEN, (callable, unused, unused -- callable, unused, unused)) {
PyObject *len = _PyInterpreterState_GET()->callable_cache.len;
if (sym_get_const(ctx, callable) == len) {
REPLACE_OP(this_instr, _NOP, 0, 0);
}
sym_set_const(callable, len);
}
// END BYTECODES //
}

15
Python/optimizer_cases.c.h generated
View file

@ -2065,11 +2065,22 @@
break;
}
case _GUARD_CALLABLE_LEN: {
JitOptSymbol *callable;
callable = stack_pointer[-3];
PyObject *len = _PyInterpreterState_GET()->callable_cache.len;
if (sym_get_const(ctx, callable) == len) {
REPLACE_OP(this_instr, _NOP, 0, 0);
}
sym_set_const(callable, len);
break;
}
case _CALL_LEN: {
JitOptSymbol *res;
res = sym_new_type(ctx, &PyLong_Type);
stack_pointer[-2 - oparg] = res;
stack_pointer += -1 - oparg;
stack_pointer[-3] = res;
stack_pointer += -2;
assert(WITHIN_STACK_BOUNDS());
break;
}

2
Python/specialize.c
View file

@ -2147,7 +2147,7 @@ specialize_c_call(PyObject *callable, _Py_CODEUNIT *instr, int nargs)
}
/* len(o) */
PyInterpreterState *interp = _PyInterpreterState_GET();
if (callable == interp->callable_cache.len) {
if (callable == interp->callable_cache.len && instr->op.arg == 1) {
specialize(instr, CALL_LEN);
return 0;
}