From: Raymond Hettinger <python@rcn.com>
Date: Sun, 21 Mar 2004 17:01:44 +0000 (+0000)
Subject: Add identity shortcut to PyObject_RichCompareBool.
X-Git-Tag: v2.4a1~638
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=93d448198b2a883639ed2c2e30f1f0fd7f002a90;p=thirdparty%2FPython%2Fcpython.git

Add identity shortcut to PyObject_RichCompareBool.
---

diff --git a/Objects/object.c b/Objects/object.c
index b913a064dfec..bda27e0d4241 100644
--- a/Objects/object.c
+++ b/Objects/object.c
@@ -871,9 +871,19 @@ Done:
 int
 PyObject_RichCompareBool(PyObject *v, PyObject *w, int op)
 {
-	PyObject *res = PyObject_RichCompare(v, w, op);
+	PyObject *res;
 	int ok;
 
+	/* Quick result when objects are the same.
+	   Guarantees that identity implies equality. */
+	if (v == w) {
+		if (op == Py_EQ)
+			return 1;
+		else if (op == Py_NE)
+			return 0;
+	}
+
+	res = PyObject_RichCompare(v, w, op);
 	if (res == NULL)
 		return -1;
 	if (PyBool_Check(res))