From 353be6b565f1dcb937fe084a827ad9e4e6cc9e1d Mon Sep 17 00:00:00 2001
From: Dominic Kempf <dominic.kempf@iwr.uni-heidelberg.de>
Date: Mon, 7 Nov 2016 20:30:53 +0100
Subject: [PATCH] [bugfix] Define the comment field of barrier

The scheduler uses it, so we need to set it.
---
 loopy/schedule/__init__.py | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/loopy/schedule/__init__.py b/loopy/schedule/__init__.py
index ffef62cf8..9110c4ac0 100644
--- a/loopy/schedule/__init__.py
+++ b/loopy/schedule/__init__.py
@@ -1138,7 +1138,8 @@ def convert_barrier_instructions_to_barriers(kernel, schedule):
             if isinstance(insn, BarrierInstruction):
                 result.append(Barrier(
                     kind=insn.kind,
-                    originating_insn_id=insn.id))
+                    originating_insn_id=insn.id,
+                    comment="Barrier inserted due to %s" % insn.id))
                 continue
 
         result.append(sched_item)
-- 
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