Index: lib/Transforms/Vectorize/LoopVectorizationLegality.cpp
===================================================================
--- lib/Transforms/Vectorize/LoopVectorizationLegality.cpp
+++ lib/Transforms/Vectorize/LoopVectorizationLegality.cpp
@@ -726,7 +726,7 @@
 
   if (!PrimaryInduction) {
     LLVM_DEBUG(dbgs() << "LV: Did not find one integer induction var.\n");
-    if (Inductions.empty()) {
+    if (Inductions.empty() || !WidestIndTy) {
       ORE->emit(createMissedAnalysis("NoInductionVariable")
                 << "loop induction variable could not be identified");
       return false;