[LLD] COFF: Remove dead code.

[ruiu]

Summary

LLD got a support of the map file, so this function seems useless now.

[pcc]

LGTM

[Eugene.Zelenko]

Committed in r240846.

COFF/SymbolTable.h

public:
   // You can choose one from these four -- {w,}{WinMain,main}.
   // There are four different entry point functions for them,
   // {w,}{WinMain,main}CRTStartup, respectively. The linker needs to
   // choose the right one depending on which `main` function is defined.
   // This function looks up the symbol table and resolve corresponding
   // entry point name.
   ErrorOr<StringRef> findDefaultEntry();
 
-  // Dump contents of the symbol table to stderr.
-  void dump();
-
   // Print a layout map to OS.
   void printMap(llvm::raw_ostream &OS);
 
   // Build a COFF object representing the combined contents of BitcodeFiles
   // and add it to the symbol table. Called after all files are added and
   // before the writer writes results to a file.
   std::error_code addCombinedLTOObject();
 

COFF/SymbolTable.cpp

std::error_code SymbolTable::rename(StringRef From, StringRef To) {
   if (auto EC = resolve(Body))
     return EC;
   Sym->Body = Body->getReplacement();
   Body->setBackref(Sym);
   ++Version;
   return std::error_code();
 }
 
-void SymbolTable::dump() {
-  for (auto &P : Symtab) {
-    Symbol *Ref = P.second;
-    if (auto *Body = dyn_cast<Defined>(Ref->Body))
-      llvm::dbgs() << Twine::utohexstr(Config->ImageBase + Body->getRVA())
-                   << " " << Body->getName() << "\n";
-  }
-}
-
 void SymbolTable::printMap(llvm::raw_ostream &OS) {
   for (ObjectFile *File : ObjectFiles) {
     OS << File->getShortName() << ":\n";
     for (SymbolBody *Body : File->getSymbols())
       if (auto *R = dyn_cast<DefinedRegular>(Body))
         if (R->isLive())
           OS << Twine::utohexstr(Config->ImageBase + R->getRVA())
              << " " << R->getName() << "\n";