[llvm] r207194 - blockfreq: Document assertion

[Duncan P. N. Exon Smith]

Author: dexonsmith
Date: Thu Apr 24 23:38:40 2014
New Revision: 207194

URL: http://llvm.org/viewvc/llvm-project?rev=207194&view=rev
Log:
blockfreq: Document assertion

<rdar://problem/14292693>

Modified:
    llvm/trunk/lib/Analysis/BlockFrequencyInfoImpl.cpp

Modified: llvm/trunk/lib/Analysis/BlockFrequencyInfoImpl.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Analysis/BlockFrequencyInfoImpl.cpp?rev=207194&r1=207193&r2=207194&view=diff
==============================================================================
--- llvm/trunk/lib/Analysis/BlockFrequencyInfoImpl.cpp (original)
+++ llvm/trunk/lib/Analysis/BlockFrequencyInfoImpl.cpp Thu Apr 24 23:38:40 2014
@@ -485,7 +485,7 @@ static void combineWeight(Weight &W, con
   }
   assert(W.Type == OtherW.Type);
   assert(W.TargetNode == OtherW.TargetNode);
-  assert(W.Amount < W.Amount + OtherW.Amount);
+  assert(W.Amount < W.Amount + OtherW.Amount && "Unexpected overflow");
   W.Amount += OtherW.Amount;
 }
 static void combineWeightsBySorting(WeightList &Weights) {