MC: Remove MCAssembler argument from addFileName

Author: MaskRay

llvm/include/llvm/MC/MCObjectWriter.h

@@ -97,7 +97,7 @@ class MCObjectWriter {
   MutableArrayRef<std::pair<std::string, size_t>> getFileNames() {
     return FileNames;
   }
-  void addFileName(MCAssembler &Asm, StringRef FileName);
+  void addFileName(StringRef FileName);
   void setCompilerVersion(StringRef CompilerVers) {
     CompilerVersion = CompilerVers;
   }

llvm/lib/MC/MCObjectStreamer.cpp

@@ -753,15 +753,15 @@ void MCObjectStreamer::emitNops(int64_t NumBytes, int64_t ControlledNopLength,
 
 void MCObjectStreamer::emitFileDirective(StringRef Filename) {
   MCAssembler &Asm = getAssembler();
-  Asm.getWriter().addFileName(Asm, Filename);
+  Asm.getWriter().addFileName(Filename);
 }
 
 void MCObjectStreamer::emitFileDirective(StringRef Filename,
                                          StringRef CompilerVersion,
                                          StringRef TimeStamp,
                                          StringRef Description) {
   MCObjectWriter &W = getAssembler().getWriter();
-  W.addFileName(getAssembler(), Filename);
+  W.addFileName(Filename);
   if (CompilerVersion.size())
     W.setCompilerVersion(CompilerVersion);
   // TODO: add TimeStamp and Description to .file symbol table entry

llvm/lib/MC/MCObjectWriter.cpp

@@ -51,8 +51,8 @@ bool MCObjectWriter::isSymbolRefDifferenceFullyResolvedImpl(
   return &SecA == &SecB;
 }
 
-void MCObjectWriter::addFileName(MCAssembler &Asm, StringRef FileName) {
-  FileNames.emplace_back(std::string(FileName), Asm.Symbols.size());
+void MCObjectWriter::addFileName(StringRef FileName) {
+  FileNames.emplace_back(std::string(FileName), Asm->Symbols.size());
 }
 
 MCContext &MCObjectTargetWriter::getContext() const {