# HG changeset patch
# User Alex Gaynor <agaynor@mozilla.com>
# Date 1499719168 14400
# Node ID 943b8c37f49d80173d14b3a2025095d83f425932
# Parent  32331f54930cebd2baf953506971953a588491b4
revlog: micro-optimize the computation of hashes

Differential Revision: https://phab.mercurial-scm.org/D31

diff -r 32331f54930c -r 943b8c37f49d mercurial/revlog.py
--- a/mercurial/revlog.py	Mon Jul 03 13:49:03 2017 +0200
+++ b/mercurial/revlog.py	Mon Jul 10 16:39:28 2017 -0400
@@ -152,10 +152,14 @@
         s.update(p1)
     else:
         # none of the parent nodes are nullid
-        l = [p1, p2]
-        l.sort()
-        s = hashlib.sha1(l[0])
-        s.update(l[1])
+        if p1 < p2:
+            a = p1
+            b = p2
+        else:
+            a = p2
+            b = p1
+        s = hashlib.sha1(a)
+        s.update(b)
     s.update(text)
     return s.digest()