1 files changed, 5 insertions, 2 deletions
diff --git a/llvm/lib/Transforms/Scalar/LoopStrengthReduce.cpp b/llvm/lib/Transforms/Scalar/LoopStrengthReduce.cpp
index 6462e3fb856..8551392baa8 100644
--- a/llvm/lib/Transforms/Scalar/LoopStrengthReduce.cpp
+++ b/llvm/lib/Transforms/Scalar/LoopStrengthReduce.cpp
@@ -2973,8 +2973,11 @@ void LSRInstance::CollectChains() {
       // Ignore users that are part of a SCEV expression. This way we only
       // consider leaf IV Users. This effectively rediscovers a portion of
       // IVUsers analysis but in program order this time.
-      if (SE.isSCEVable(I.getType()) && !isa<SCEVUnknown>(SE.getSCEV(&I)))
-        continue;
+      if (SE.isSCEVable(I.getType())) {
+        const SCEV *SI = SE.getSCEV(&I);
+        if (!isa<SCEVUnknown>(SI) && !isa<SCEVConstant>(SI))
+          continue;
+      }
 
       // Remove this instruction from any NearUsers set it may be in.
       for (unsigned ChainIdx = 0, NChains = IVChainVec.size();