Issue #14687: Optimize str%args
* formatfloat() uses unicode_fromascii() instead of PyUnicode_DecodeASCII()
to not have to check characters, we know that it is really ASCII
* Use PyUnicode_FromOrdinal() instead of _PyUnicode_FromUCS4() to format
a character: if avoids a call to ucs4lib_find_max_char() to compute
the maximum character (whereas we already know it, it is just the character
itself)
diff --git a/Objects/unicodeobject.c b/Objects/unicodeobject.c
index 18bc07f..95993e8 100644
--- a/Objects/unicodeobject.c
+++ b/Objects/unicodeobject.c
@@ -13431,7 +13431,7 @@
(flags & F_ALT) ? Py_DTSF_ALT : 0, NULL);
if (p == NULL)
return NULL;
- result = PyUnicode_DecodeASCII(p, strlen(p), NULL);
+ result = unicode_fromascii((unsigned char*)p, strlen(p));
PyMem_Free(p);
return result;
}
@@ -13947,7 +13947,7 @@
Py_UCS4 ch = formatchar(v);
if (ch == (Py_UCS4) -1)
goto onError;
- temp = _PyUnicode_FromUCS4(&ch, 1);
+ temp = PyUnicode_FromOrdinal(ch);
break;
}