[polly] r280939 - ScopDetection: Make sure we do not accidentally divide by zero

[Tobias Grosser via llvm-commits]

Author: grosser
Date: Thu Sep  8 09:08:05 2016
New Revision: 280939

URL: http://llvm.org/viewvc/llvm-project?rev=280939&view=rev
Log:
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.

Modified:
    polly/trunk/lib/Analysis/ScopDetection.cpp

Modified: polly/trunk/lib/Analysis/ScopDetection.cpp
URL: http://llvm.org/viewvc/llvm-project/polly/trunk/lib/Analysis/ScopDetection.cpp?rev=280939&r1=280938&r2=280939&view=diff
==============================================================================
--- polly/trunk/lib/Analysis/ScopDetection.cpp (original)
+++ polly/trunk/lib/Analysis/ScopDetection.cpp Thu Sep  8 09:08:05 2016
@@ -1307,6 +1307,9 @@ bool ScopDetection::hasSufficientCompute
                                          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();