Stub out explicit MCELFObjectTargetWriter interface.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122067 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/X86/X86AsmBackend.cpp b/lib/Target/X86/X86AsmBackend.cpp
index 2b13c0a..934cd1c 100644
--- a/lib/Target/X86/X86AsmBackend.cpp
+++ b/lib/Target/X86/X86AsmBackend.cpp
@@ -55,6 +55,11 @@
                                /*UseAggressiveSymbolFolding=*/Is64Bit) {}
 };
 
+class X86ELFObjectWriter : public MCELFObjectTargetWriter {
+public:
+  X86ELFObjectWriter() : MCELFObjectTargetWriter() {}
+};
+
 class X86AsmBackend : public TargetAsmBackend {
 public:
   X86AsmBackend(const Target &T)
@@ -310,7 +315,8 @@
     : ELFX86AsmBackend(T, OSType) {}
 
   MCObjectWriter *createObjectWriter(raw_ostream &OS) const {
-    return createELFObjectWriter(OS, /*Is64Bit=*/false,
+    return createELFObjectWriter(new X86ELFObjectWriter(), OS,
+                                 /*Is64Bit=*/false,
                                  OSType, ELF::EM_386,
                                  /*IsLittleEndian=*/true,
                                  /*HasRelocationAddend=*/false);
@@ -323,7 +329,7 @@
     : ELFX86AsmBackend(T, OSType) {}
 
   MCObjectWriter *createObjectWriter(raw_ostream &OS) const {
-    return createELFObjectWriter(OS, /*Is64Bit=*/true,
+    return createELFObjectWriter(new X86ELFObjectWriter(), OS, /*Is64Bit=*/true,
                                  OSType, ELF::EM_X86_64,
                                  /*IsLittleEndian=*/true,
                                  /*HasRelocationAddend=*/true);