Relocate hash check to improve worst case

Cython/Utility/StringTools.c

@@ -263,13 +263,6 @@ static CYTHON_INLINE int __Pyx_PyBytes_Equals(PyObject* s1, PyObject* s2, int eq
         Py_ssize_t length = PyBytes_GET_SIZE(s1);
         if (length != PyBytes_GET_SIZE(s2))
             return (equals == Py_NE);
-#if CYTHON_COMPILING_IN_CPYTHON
-        if (((PyBytesObject*)s1)->ob_shash != ((PyBytesObject*)s2)->ob_shash
-            && ((PyBytesObject*)s1)->ob_shash != -1 && ((PyBytesObject*)s2)->ob_shash != -1)
-        {
-            return (equals == Py_NE);
-        }
-#endif
         // len(s1) == len(s2) >= 1  (empty string is interned, and "s1 is not s2")
         ps1 = PyBytes_AS_STRING(s1);
         ps2 = PyBytes_AS_STRING(s2);
@@ -278,6 +271,13 @@ static CYTHON_INLINE int __Pyx_PyBytes_Equals(PyObject* s1, PyObject* s2, int eq
         } else if (length == 1) {
             return (equals == Py_EQ);
         } else {
+#if CYTHON_COMPILING_IN_CPYTHON
+            if (((PyBytesObject*)s1)->ob_shash != ((PyBytesObject*)s2)->ob_shash
+                && ((PyBytesObject*)s1)->ob_shash != -1 && ((PyBytesObject*)s2)->ob_shash != -1)
+            {
+                return (equals == Py_NE);
+            }
+#endif
             int result = memcmp(ps1, ps2, (size_t)length);
             return (equals == Py_EQ) ? (result == 0) : (result != 0);
         }