diff --git a/llvm/lib/Target/AArch64/AArch64InstrInfo.cpp b/llvm/lib/Target/AArch64/AArch64InstrInfo.cpp
--- a/llvm/lib/Target/AArch64/AArch64InstrInfo.cpp
+++ b/llvm/lib/Target/AArch64/AArch64InstrInfo.cpp
@@ -2574,6 +2574,7 @@
   AM.BaseReg = Base->getReg();
   AM.Displacement = Offset;
   AM.ScaledReg = 0;
+  AM.Scale = 0;
   return AM;
 }