[Courgette] Using LabelManager to reduce Courgette-apply peak RAM by 25%.

courgette/disassembler_win32_x64.h

 // Copyright 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef COURGETTE_DISASSEMBLER_WIN32_X64_H_
 #define COURGETTE_DISASSEMBLER_WIN32_X64_H_
 
 #include <stddef.h>
 #include <stdint.h>
 
@@ skipping 36 matching lines @@
   // Returns Section containing the relative virtual address, or null if none.
   const Section* RVAToSection(RVA rva) const;
 
   // (4) -> (5) (see AddressTranslator comment): Returns the RVA of the VA
   // specified by |address|, or kNoRVA if |address| lies outside of the image.
   RVA Address64ToRVA(uint64_t address) const;
 
   static std::string SectionName(const Section* section);
 
  protected:
+  // Disassembler interfaces.
+  RvaVisitor* CreateAbs32TargetRvaVisitor() override;
+  RvaVisitor* CreateRel32TargetRvaVisitor() override;
+  void RemoveUnusedRel32Locations(AssemblyProgram* program) override;
+
   CheckBool ParseFile(AssemblyProgram* target) WARN_UNUSED_RESULT;
   bool ParseAbs32Relocs();
   void ParseRel32RelocsFromSections();
   void ParseRel32RelocsFromSection(const Section* section);
 
   CheckBool ParseNonSectionFileRegion(FileOffset start_file_offset,
                                       FileOffset end_file_offset,
                                       AssemblyProgram* program)
       WARN_UNUSED_RESULT;
   CheckBool ParseFileRegion(const Section* section,
@@ skipping 67 matching lines @@
   std::map<RVA, int> abs32_target_rvas_;
   std::map<RVA, int> rel32_target_rvas_;
 #endif
 
   DISALLOW_COPY_AND_ASSIGN(DisassemblerWin32X64);
 };
 
 }  // namespace courgette
 
 #endif  // COURGETTE_DISASSEMBLER_WIN32_X64_H_