From 0e5fab521491f5e69d33c0f12729a7c5f21d1957 Mon Sep 17 00:00:00 2001
From: Pedro Gonnet <gonnet@google.com>
Date: Mon, 26 Jun 2017 21:06:46 +0200
Subject: [PATCH] add fields for labelling cell as needing to be drifted.

---
 src/cell.h | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/src/cell.h b/src/cell.h
index 05af422087..6623e812d4 100644
--- a/src/cell.h
+++ b/src/cell.h
@@ -333,6 +333,12 @@ struct cell {
 
   /* Will this cell do anything that relies on its sorts being set correctly? */
   integertime_t requires_sorts;
+  
+  /*! Does this cell need to be drifted? */
+  char do_drift;
+  
+  /*! Does any of this cell's sub-cells need to be drifted? */
+  char do_sub_drift;
 
 #ifdef SWIFT_DEBUG_CHECKS
   /*! The list of tasks that have been executed on this cell */
-- 
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