diff --git a/lib/Transforms/Scalar/IndVarSimplify.cpp b/lib/Transforms/Scalar/IndVarSimplify.cpp
index 53d3ab5f048..128b19778fc 100644
--- a/lib/Transforms/Scalar/IndVarSimplify.cpp
+++ b/lib/Transforms/Scalar/IndVarSimplify.cpp
@@ -732,7 +732,7 @@ static bool useSIToFPInst(ConstantFP &InitV, ConstantFP &ExitV,
 
   // If the iteration range can be handled by SIToFPInst then use it.
   APInt Max = APInt::getSignedMaxValue(32);
-  if (Max.getZExtValue() > abs(intEV - intIV))
+  if (Max.getZExtValue() > static_cast<uint64_t>(abs(intEV - intIV)))
     return true;
   
   return false;