diff --git a/llvm/lib/Target/AArch64/AArch64FastISel.cpp b/llvm/lib/Target/AArch64/AArch64FastISel.cpp
index 5459c1ba4f7ee6abe68830b180d6c8ec90f74b28..adcb64d191c984a114f74e26853773f8be8b36d5 100644
--- a/llvm/lib/Target/AArch64/AArch64FastISel.cpp
+++ b/llvm/lib/Target/AArch64/AArch64FastISel.cpp
@@ -487,7 +487,7 @@ bool AArch64FastISel::ComputeAddress(const Value *Obj, Address &Addr, Type *Ty)
           NumBytes = 0;
       }
 
-      if (NumBytes != (1 << Val))
+      if (NumBytes != (1U << Val))
         break;
 
       Addr.setShift(Val);