[ELF] Delete unused forward declarations and unused DynamicReloc::getInputSec(). NFC

llvm-svn: 356239

lld/ELF/OutputSections.h

@@ -22,17 +22,8 @@ namespace lld {
 namespace elf {
 
 struct PhdrEntry;
-class Symbol;
-struct EhSectionPiece;
-class EhInputSection;
 class InputSection;
 class InputSectionBase;
-class MergeInputSection;
-class OutputSection;
-template <class ELFT> class ObjFile;
-template <class ELFT> class SharedFile;
-class SharedSymbol;
-class Defined;
 
 // This represents a section in an output file.
 // It is composed of multiple InputSections.

lld/ELF/Symbols.h

@@ -30,13 +30,6 @@ std::string toString(const elf::InputFile *);
 
 namespace elf {
 
-class ArchiveFile;
-class BitcodeFile;
-class BssSection;
-class InputFile;
-class LazyObjFile;
-template <class ELFT> class ObjFile;
-class OutputSection;
 template <class ELFT> class SharedFile;
 
 // This is a StringRef-like container that doesn't run strlen().

lld/ELF/SyntheticSections.h

@@ -31,7 +31,6 @@
 namespace lld {
 namespace elf {
 class Defined;
-class SharedSymbol;
 
 class SyntheticSection : public InputSection {
 public:
@@ -418,7 +417,6 @@ public:
 
   uint64_t getOffset() const;
   uint32_t getSymIndex() const;
-  const InputSectionBase *getInputSec() const { return InputSec; }
 
   // Computes the addend of the dynamic relocation. Note that this is not the
   // same as the Addend member variable as it also includes the symbol address

lld/ELF/Writer.h

@@ -19,8 +19,6 @@ namespace elf {
 class InputFile;
 class OutputSection;
 class InputSectionBase;
-template <class ELFT> class ObjFile;
-class SymbolTable;
 template <class ELFT> void writeResult();
 
 // This describes a program header entry.