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replace inline function `is_small_int` with a macro version (GH-15710)

This commit is contained in:
animalize 2019-09-06 14:00:56 +08:00 committed by Raymond Hettinger
parent 3f43ceff18
commit 6b519985d2
2 changed files with 10 additions and 15 deletions
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3
Misc/NEWS.d/next/Core and Builtins/2019-08-23-22-46-25.bpo-37812.vsWZwS.rst
View File

@ -1,3 +1,2 @@
The ``CHECK_SMALL_INT`` macro used inside :file:`Object/longobject.c` has
been replaced with an explicit ``return`` at each call site, conditioned on
a ``static inline`` function ``is_small_int``.
been replaced with an explicit ``return`` at each call site.

22
Objects/longobject.c
View File

@ -42,11 +42,7 @@ PyObject *_PyLong_One = NULL;
*/
static PyLongObject small_ints[NSMALLNEGINTS + NSMALLPOSINTS];
static inline int
is_small_int(long long ival)
{
return -NSMALLNEGINTS <= ival && ival < NSMALLPOSINTS;
}
#define IS_SMALL_INT(ival) (-NSMALLNEGINTS <= (ival) && (ival) < NSMALLPOSINTS)
#ifdef COUNT_ALLOCS
Py_ssize_t _Py_quick_int_allocs, _Py_quick_neg_int_allocs;
@ -56,7 +52,7 @@ static PyObject *
get_small_int(sdigit ival)
{
PyObject *v;
assert(is_small_int(ival));
assert(IS_SMALL_INT(ival));
v = (PyObject *)&small_ints[ival + NSMALLNEGINTS];
Py_INCREF(v);
#ifdef COUNT_ALLOCS
@ -73,7 +69,7 @@ maybe_small_long(PyLongObject *v)
{
if (v && Py_ABS(Py_SIZE(v)) <= 1) {
sdigit ival = MEDIUM_VALUE(v);
if (is_small_int(ival)) {
if (IS_SMALL_INT(ival)) {
Py_DECREF(v);
return (PyLongObject *)get_small_int(ival);
}
@ -81,8 +77,8 @@ maybe_small_long(PyLongObject *v)
return v;
}
#else
#define is_small_int(ival) 0
#define get_small_int(ival) (assert(0), NULL)
#define IS_SMALL_INT(ival) 0
#define get_small_int(ival) (Py_UNREACHABLE(), NULL)
#define maybe_small_long(val) (val)
#endif
@ -297,7 +293,7 @@ _PyLong_Copy(PyLongObject *src)
i = -(i);
if (i < 2) {
sdigit ival = MEDIUM_VALUE(src);
if (is_small_int(ival)) {
if (IS_SMALL_INT(ival)) {
return get_small_int(ival);
}
}
@ -321,7 +317,7 @@ PyLong_FromLong(long ival)
int ndigits = 0;
int sign;
if (is_small_int(ival)) {
if (IS_SMALL_INT(ival)) {
return get_small_int((sdigit)ival);
}
@ -1154,7 +1150,7 @@ PyLong_FromLongLong(long long ival)
int ndigits = 0;
int negative = 0;
if (is_small_int(ival)) {
if (IS_SMALL_INT(ival)) {
return get_small_int((sdigit)ival);
}
@ -1229,7 +1225,7 @@ PyLong_FromSsize_t(Py_ssize_t ival)
int ndigits = 0;
int negative = 0;
if (is_small_int(ival)) {
if (IS_SMALL_INT(ival)) {
return get_small_int((sdigit)ival);
}