diff --git a/llvm/lib/Target/AArch64/AArch64ISelLowering.cpp b/llvm/lib/Target/AArch64/AArch64ISelLowering.cpp
index 856a2e4d9d67d1..5eb9b7463411fd 100644
--- a/llvm/lib/Target/AArch64/AArch64ISelLowering.cpp
+++ b/llvm/lib/Target/AArch64/AArch64ISelLowering.cpp
@@ -354,6 +354,10 @@ AArch64TargetLowering::AArch64TargetLowering(const TargetMachine &TM,
     setOperationAction(ISD::ROTR, VT, Expand);
   }
 
+  // AArch64 doesn't have i32 MULH{S|U}.
+  setOperationAction(ISD::MULHU, MVT::i32, Expand);
+  setOperationAction(ISD::MULHS, MVT::i32, Expand);
+
   // AArch64 doesn't have {U|S}MUL_LOHI.
   setOperationAction(ISD::UMUL_LOHI, MVT::i64, Expand);
   setOperationAction(ISD::SMUL_LOHI, MVT::i64, Expand);