From 14d80d0b605d8b148e14458e4c1853a940071462 Mon Sep 17 00:00:00 2001
From: Dong-hee Na <donghee.na92@gmail.com>
Date: Thu, 23 Jan 2020 02:36:54 +0900
Subject: [PATCH] bpo-39425: Fix list.count performance regression (GH-18119)

https://bugs.python.org/issue39425



Automerge-Triggered-By: @pablogsal
---
 Objects/listobject.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/Objects/listobject.c b/Objects/listobject.c
index bc8425cae63..a4e90dbf90c 100644
--- a/Objects/listobject.c
+++ b/Objects/listobject.c
@@ -2584,6 +2584,10 @@ list_count(PyListObject *self, PyObject *value)
 
     for (i = 0; i < Py_SIZE(self); i++) {
         PyObject *obj = self->ob_item[i];
+        if (obj == value) {
+           count++;
+           continue;
+        }
         Py_INCREF(obj);
         int cmp = PyObject_RichCompareBool(obj, value, Py_EQ);
         Py_DECREF(obj);