Index: llvm/lib/Target/RISCV/RISCVTargetTransformInfo.cpp
===================================================================
--- llvm/lib/Target/RISCV/RISCVTargetTransformInfo.cpp
+++ llvm/lib/Target/RISCV/RISCVTargetTransformInfo.cpp
@@ -195,7 +195,11 @@
     return BaseT::getMaskedMemoryOpCost(Opcode, Src, Alignment, AddressSpace,
                                         CostKind);
 
-  return getMemoryOpCost(Opcode, Src, Alignment, AddressSpace, CostKind);
+  auto LT = TLI->getTypeLegalizationCost(DL, Src);
+  if (!LT.first.isValid())
+    return InstructionCost::getInvalid();
+
+  return LT.first;
 }
 
 InstructionCost RISCVTTIImpl::getGatherScatterOpCost(