From 67e4afe205772a4de8629305c9d37d0a23b18872 Mon Sep 17 00:00:00 2001
From: Matt Wala <wala1@illinois.edu>
Date: Sat, 30 May 2020 22:36:54 -0500
Subject: [PATCH] Add a comment why compute_topological_order() can't be used

---
 loopy/kernel/tools.py | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/loopy/kernel/tools.py b/loopy/kernel/tools.py
index ac1e00bae..427d8cb23 100644
--- a/loopy/kernel/tools.py
+++ b/loopy/kernel/tools.py
@@ -1427,6 +1427,8 @@ def stringify_instruction_list(kernel):
 
     def insert_insn_into_order(insn):
         if insn.id in printed_insn_ids:
+            # Note: dependency cycles are deliberately ignored so that printing
+            # succeeds.
             return
         printed_insn_ids.add(insn.id)
 
-- 
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