diff --git a/lib/Transforms/Scalar/LoopStrengthReduce.cpp b/lib/Transforms/Scalar/LoopStrengthReduce.cpp
index 1817e583747..e32cacc4412 100644
--- a/lib/Transforms/Scalar/LoopStrengthReduce.cpp
+++ b/lib/Transforms/Scalar/LoopStrengthReduce.cpp
@@ -1536,7 +1536,7 @@ bool LoopStrengthReduce::ShouldUseFullStrengthReductionMode(
     // strength reduction would increase register pressure.
     do {
       SCEV *CurImm = UsersToProcess[i].Imm;
-      if (CurImm || Imm && CurImm != Imm) {
+      if ((CurImm || Imm) && CurImm != Imm) {
         if (!CurImm) CurImm = SE->getIntegerSCEV(0, Stride->getType());
         if (!Imm)       Imm = SE->getIntegerSCEV(0, Stride->getType());
         const Instruction *Inst = UsersToProcess[i].Inst;