# HG changeset patch
# User Pulkit Goyal <pulkit@yandex-team.ru>
# Date 2019-04-16 12:01:33
# Node ID 75e8e16ca1075f402276c2a09586ff7e35e62273
# Parent  d9dc0896e1d390a497886ac4b1900d2a99f67f72

branchcache: only iterate over branches which needs to be verified

Otherwise we loop over all the branches and call _verifybranch() even if not
required.

Differential Revision: https://phab.mercurial-scm.org/D6240

diff --git a/mercurial/branchmap.py b/mercurial/branchmap.py
--- a/mercurial/branchmap.py
+++ b/mercurial/branchmap.py
@@ -200,7 +200,8 @@ class branchcache(object):
 
     def _verifyall(self):
         """ verifies nodes of all the branches """
-        for b in self._entries:
+        needverification = set(self._entries.keys()) - self._verifiedbranches
+        for b in needverification:
             self._verifybranch(b)
 
     def __iter__(self):