Fix PR3913, patch by Jakub Staszak!



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@80327 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Transforms/Scalar/LoopIndexSplit.cpp b/lib/Transforms/Scalar/LoopIndexSplit.cpp
index 792b753..259427e 100644
--- a/lib/Transforms/Scalar/LoopIndexSplit.cpp
+++ b/lib/Transforms/Scalar/LoopIndexSplit.cpp
@@ -435,7 +435,7 @@
 
   CmpInst::Predicate C2P  = ExitCondition->getPredicate();
   BranchInst *LatchBR = cast<BranchInst>(Latch->getTerminator());
-  if (LatchBR->getOperand(0) != Header)
+  if (LatchBR->getOperand(1) != Header)
     C2P = CmpInst::getInversePredicate(C2P);
   Instruction *C2 = new ICmpInst(BR, C2P, SplitValue, ExitValue, "lisplit");
   Instruction *NSplitCond = BinaryOperator::CreateAnd(C1, C2, "lisplit", BR);