1 files changed, 1 insertions, 0 deletions
diff --git a/llvm/lib/Transforms/Scalar/InductiveRangeCheckElimination.cpp b/llvm/lib/Transforms/Scalar/InductiveRangeCheckElimination.cpp
index 99b4458ea0f..0c6a9f20fdd 100644
--- a/llvm/lib/Transforms/Scalar/InductiveRangeCheckElimination.cpp
+++ b/llvm/lib/Transforms/Scalar/InductiveRangeCheckElimination.cpp
@@ -779,6 +779,7 @@ LoopStructure::parseLoopStructure(ScalarEvolution &SE, BranchProbabilityInfo &BP
     if (const SCEVConstant *StepExpr =
             dyn_cast<SCEVConstant>(AR->getStepRecurrence(SE))) {
       ConstantInt *StepCI = StepExpr->getValue();
+      assert(!StepCI->isZero() && "Zero step?");
       if (StepCI->isOne() || StepCI->isMinusOne()) {
         IsIncreasing = StepCI->isOne();
         return true;