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bpo-44525: Specialize for calls to type and other builtin classes with 1 argument. (GH-29942)

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Mark Shannon 2021-12-15 15:03:42 +00:00 • committed by GitHub
parent f025ae63dc
commit 3a60bfef49
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6 changed files with 105 additions and 40 deletions
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27
Python/specialize.c
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@ -491,8 +491,10 @@ initial_counter_value(void) {
#define SPEC_FAIL_PYCFUNCTION_NOARGS 16
#define SPEC_FAIL_BAD_CALL_FLAGS 17
#define SPEC_FAIL_CLASS 18
#define SPEC_FAIL_C_METHOD_CALL 19
#define SPEC_FAIL_METHDESCR_NON_METHOD 20
#define SPEC_FAIL_PYTHON_CLASS 19
#define SPEC_FAIL_C_METHOD_CALL 20
#define SPEC_FAIL_METHDESCR_NON_METHOD 21
#define SPEC_FAIL_METHOD_CALL_CLASS 22
/* COMPARE_OP */
#define SPEC_FAIL_STRING_COMPARE 13
@ -1263,6 +1265,27 @@ specialize_class_call(
PyObject *callable, _Py_CODEUNIT *instr,
int nargs, SpecializedCacheEntry *cache)
{
assert(PyType_Check(callable));
PyTypeObject *tp = (PyTypeObject *)callable;
if (_Py_OPCODE(instr[-1]) == PRECALL_METHOD) {
SPECIALIZATION_FAIL(CALL_NO_KW, SPEC_FAIL_METHOD_CALL_CLASS);
return -1;
}
if (tp->tp_new == PyBaseObject_Type.tp_new) {
SPECIALIZATION_FAIL(CALL_NO_KW, SPEC_FAIL_PYTHON_CLASS);
return -1;
}
if (nargs == 1) {
if (tp == &PyType_Type) {
*instr = _Py_MAKECODEUNIT(CALL_NO_KW_TYPE_1, _Py_OPARG(*instr));
return 0;
}
if ((tp->tp_flags & Py_TPFLAGS_IMMUTABLETYPE) && tp->tp_vectorcall != NULL) {
cache->adaptive.version = tp->tp_version_tag;
*instr = _Py_MAKECODEUNIT(CALL_NO_KW_BUILTIN_CLASS_1, _Py_OPARG(*instr));
return 0;
}
}
SPECIALIZATION_FAIL(CALL_NO_KW, SPEC_FAIL_CLASS);
return -1;
}