[RISCV] Fix createObjectWriter after r315327

[PkmX]

Summary

RISCV backend was left out of the changes so the master build is failing. Fixed accordingly.

[asb]

Thanks, I fixed the header ordering in RISCVMCTargetDesc.h and committed.

lib/Target/RISCV/MCTargetDesc/RISCVAsmBackend.cpp

public:
   RISCVAsmBackend(uint8_t OSABI, bool Is64Bit)
       : MCAsmBackend(), OSABI(OSABI), Is64Bit(Is64Bit) {}
   ~RISCVAsmBackend() override {}
 
   void applyFixup(const MCAssembler &Asm, const MCFixup &Fixup,
                   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,
                             const MCAsmLayout &Layout) const override {
     return false;
   }
 
   unsigned getNumFixupKinds() const override {
void RISCVAsmBackend::applyFixup(const MCAssembler &Asm, const MCFixup &Fixup,
   // For each byte of the fragment that the fixup touches, mask in the
   // bits from the fixup value.
   for (unsigned i = 0; i != 4; ++i) {
     Data[Offset + i] |= uint8_t((Value >> (i * 8)) & 0xff);
   }
   return;
 }
 
-MCObjectWriter *
+std::unique_ptr<MCObjectWriter>
 RISCVAsmBackend::createObjectWriter(raw_pwrite_stream &OS) const {
   return createRISCVELFObjectWriter(OS, OSABI, Is64Bit);
 }
 
 } // end anonymous namespace
 
 MCAsmBackend *llvm::createRISCVAsmBackend(const Target &T,
                                           const MCRegisterInfo &MRI,
                                           const Triple &TT, StringRef CPU,
                                           const MCTargetOptions &Options) {
   uint8_t OSABI = MCELFObjectTargetWriter::getOSABI(TT.getOS());
   return new RISCVAsmBackend(OSABI, TT.isArch64Bit());
 }

lib/Target/RISCV/MCTargetDesc/RISCVELFObjectWriter.cpp

 //===-- RISCVELFObjectWriter.cpp - RISCV ELF Writer -----------------------===//
 //
 //                     The LLVM Compiler Infrastructure
 //
 // This file is distributed under the University of Illinois Open Source
 // License. See LICENSE.TXT for details.
 //
 //===----------------------------------------------------------------------===//
 
 #include "MCTargetDesc/RISCVFixupKinds.h"
 #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;
 
 namespace {
 class RISCVELFObjectWriter : public MCELFObjectTargetWriter {
 public:
   RISCVELFObjectWriter(uint8_t OSABI, bool Is64Bit);
case RISCV::fixup_riscv_pcrel_hi20:
     return ELF::R_RISCV_PCREL_HI20;
   case RISCV::fixup_riscv_jal:
     return ELF::R_RISCV_JAL;
   case RISCV::fixup_riscv_branch:
     return ELF::R_RISCV_BRANCH;
   }
 }
 
-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);
 }

lib/Target/RISCV/MCTargetDesc/RISCVMCTargetDesc.h

 //===-- RISCVMCTargetDesc.h - RISCV Target Descriptions ---------*- C++ -*-===//
 //
 //                     The LLVM Compiler Infrastructure
 //
 // This file is distributed under the University of Illinois Open Source
 // License. See LICENSE.TXT for details.
 //
 //===----------------------------------------------------------------------===//
 //
 // This file provides RISCV specific target descriptions.
 //
 //===----------------------------------------------------------------------===//
 
 #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"
 
 namespace llvm {
 class MCAsmBackend;
 class MCCodeEmitter;
 class MCContext;

 MCCodeEmitter *createRISCVMCCodeEmitter(const MCInstrInfo &MCII,
                                         const MCRegisterInfo &MRI,
                                         MCContext &Ctx);
 
 MCAsmBackend *createRISCVAsmBackend(const Target &T, const MCRegisterInfo &MRI,
                                     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.
 #define GET_REGINFO_ENUM
 #include "RISCVGenRegisterInfo.inc"
 
 // Defines symbolic names for RISC-V instructions.
 #define GET_INSTRINFO_ENUM
 #include "RISCVGenInstrInfo.inc"
 
 #define GET_SUBTARGETINFO_ENUM
 #include "RISCVGenSubtargetInfo.inc"
 
 #endif