Index: lib/Target/RISCV/MCTargetDesc/RISCVAsmBackend.cpp
===================================================================
--- lib/Target/RISCV/MCTargetDesc/RISCVAsmBackend.cpp
+++ lib/Target/RISCV/MCTargetDesc/RISCVAsmBackend.cpp
@@ -39,7 +39,8 @@
                   const MCValue &Target, MutableArrayRef<char> Data,
                   uint64_t Value, bool IsResolved) const override;
 
-  MCObjectWriter *createObjectWriter(raw_pwrite_stream &OS) const override;
+  std::unique_ptr<MCObjectWriter>
+  createObjectWriter(raw_pwrite_stream &OS) const override;
 
   bool fixupNeedsRelaxation(const MCFixup &Fixup, uint64_t Value,
                             const MCRelaxableFragment *DF,
@@ -182,7 +183,7 @@
   return;
 }
 
-MCObjectWriter *
+std::unique_ptr<MCObjectWriter>
 RISCVAsmBackend::createObjectWriter(raw_pwrite_stream &OS) const {
   return createRISCVELFObjectWriter(OS, OSABI, Is64Bit);
 }
Index: lib/Target/RISCV/MCTargetDesc/RISCVELFObjectWriter.cpp
===================================================================
--- lib/Target/RISCV/MCTargetDesc/RISCVELFObjectWriter.cpp
+++ lib/Target/RISCV/MCTargetDesc/RISCVELFObjectWriter.cpp
@@ -11,6 +11,7 @@
 #include "MCTargetDesc/RISCVMCTargetDesc.h"
 #include "llvm/MC/MCELFObjectWriter.h"
 #include "llvm/MC/MCFixup.h"
+#include "llvm/MC/MCObjectWriter.h"
 #include "llvm/Support/ErrorHandling.h"
 
 using namespace llvm;
@@ -61,8 +62,9 @@
   }
 }
 
-MCObjectWriter *llvm::createRISCVELFObjectWriter(raw_pwrite_stream &OS,
-                                                 uint8_t OSABI, bool Is64Bit) {
+std::unique_ptr<MCObjectWriter>
+llvm::createRISCVELFObjectWriter(raw_pwrite_stream &OS, uint8_t OSABI,
+                                 bool Is64Bit) {
   return createELFObjectWriter(
       llvm::make_unique<RISCVELFObjectWriter>(OSABI, Is64Bit), OS,
       /*IsLittleEndian=*/false);
Index: lib/Target/RISCV/MCTargetDesc/RISCVMCTargetDesc.h
===================================================================
--- lib/Target/RISCV/MCTargetDesc/RISCVMCTargetDesc.h
+++ lib/Target/RISCV/MCTargetDesc/RISCVMCTargetDesc.h
@@ -14,6 +14,7 @@
 #ifndef LLVM_LIB_TARGET_RISCV_MCTARGETDESC_RISCVMCTARGETDESC_H
 #define LLVM_LIB_TARGET_RISCV_MCTARGETDESC_RISCVMCTARGETDESC_H
 
+#include <memory>
 #include "llvm/Config/config.h"
 #include "llvm/MC/MCTargetOptions.h"
 #include "llvm/Support/DataTypes.h"
@@ -43,8 +44,8 @@
                                     const Triple &TT, StringRef CPU,
                                     const MCTargetOptions &Options);
 
-MCObjectWriter *createRISCVELFObjectWriter(raw_pwrite_stream &OS, uint8_t OSABI,
-                                           bool Is64Bit);
+std::unique_ptr<MCObjectWriter>
+createRISCVELFObjectWriter(raw_pwrite_stream &OS, uint8_t OSABI, bool Is64Bit);
 }
 
 // Defines symbolic names for RISC-V registers.