From b316dc166f8ad41c6d845870e065ded9c1c54399 Mon Sep 17 00:00:00 2001
From: Tobias Grosser <tobias@grosser.es>
Date: Thu, 8 Sep 2016 14:08:05 +0000
Subject: [PATCH] ScopDetection: Make sure we do not accidentally divide by
 zero

This code path is likely never triggered, but by still handling this case
locally we avoid warnings in clangs static analyzer.

llvm-svn: 280939
---
 polly/lib/Analysis/ScopDetection.cpp | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/polly/lib/Analysis/ScopDetection.cpp b/polly/lib/Analysis/ScopDetection.cpp
index 586beaf..b891c02 100644
--- a/polly/lib/Analysis/ScopDetection.cpp
+++ b/polly/lib/Analysis/ScopDetection.cpp
@@ -1307,6 +1307,9 @@ bool ScopDetection::hasSufficientCompute(DetectionContext &Context,
                                          int NumLoops) const {
   int InstCount = 0;
 
+  if (NumLoops == 0)
+    return false;
+
   for (auto *BB : Context.CurRegion.blocks())
     if (Context.CurRegion.contains(LI->getLoopFor(BB)))
       InstCount += BB->size();
-- 
2.7.4