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bpo-45510: Specialize BINARY_SUBTRACT (GH-29523)

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Dong-hee Na 2021-11-18 18:19:58 +09:00 • committed by GitHub
parent 0920b61a0c
commit 345ba3f080
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GPG key ID: 4AEE18F83AFDEB23
7 changed files with 107 additions and 50 deletions
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35
Python/ceval.c
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@ -2009,6 +2009,41 @@ check_eval_breaker:
DISPATCH();
}
TARGET(BINARY_OP_SUBTRACT_INT) {
PyObject *left = SECOND();
PyObject *right = TOP();
DEOPT_IF(!PyLong_CheckExact(left), BINARY_OP);
DEOPT_IF(!PyLong_CheckExact(right), BINARY_OP);
STAT_INC(BINARY_OP, hit);
PyObject *sub = _PyLong_Subtract((PyLongObject *)left, (PyLongObject *)right);
SET_SECOND(sub);
Py_DECREF(right);
Py_DECREF(left);
STACK_SHRINK(1);
if (sub == NULL) {
goto error;
}
DISPATCH();
}
TARGET(BINARY_OP_SUBTRACT_FLOAT) {
PyObject *left = SECOND();
PyObject *right = TOP();
DEOPT_IF(!PyFloat_CheckExact(left), BINARY_OP);
DEOPT_IF(!PyFloat_CheckExact(right), BINARY_OP);
STAT_INC(BINARY_OP, hit);
double dsub = ((PyFloatObject *)left)->ob_fval - ((PyFloatObject *)right)->ob_fval;
PyObject *sub = PyFloat_FromDouble(dsub);
SET_SECOND(sub);
Py_DECREF(right);
Py_DECREF(left);
STACK_SHRINK(1);
if (sub == NULL) {
goto error;
}
DISPATCH();
}
TARGET(BINARY_OP_ADD_UNICODE) {
PyObject *left = SECOND();
PyObject *right = TOP();