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

courgette/disassembler_elf_32_arm.cc

 // 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.
 
 #include "courgette/disassembler_elf_32_arm.h"
 
 #include <memory>
 #include <vector>
 
 #include "base/logging.h"
@@ skipping 281 matching lines @@
       set_relative_target(relative_target);
       return ret;
     }
    default:
      return false;
   }
 }
 
 CheckBool DisassemblerElf32ARM::TypedRVAARM::EmitInstruction(
     AssemblyProgram* program,
-    RVA target_rva) {
-  return program->EmitRel32ARM(c_op(),
-                               program->FindOrMakeRel32Label(target_rva),
-                               arm_op_,
-                               op_size());
+    Label* label) {
+  return program->EmitRel32ARM(c_op(), label, arm_op_, op_size());
 }
 
 DisassemblerElf32ARM::DisassemblerElf32ARM(const void* start, size_t length)
     : DisassemblerElf32(start, length) {
 }
 
 // Convert an ELF relocation struction into an RVA.
 CheckBool DisassemblerElf32ARM::RelToRVA(Elf32_Rel rel, RVA* result) const {
   // The rightmost byte of r_info is the type.
   elf32_rel_arm_type_values type =
@@ skipping 206 matching lines @@
       // Move 2 bytes at a time, but track 32-bit boundaries
       p += 2;
       on_32bit = ((on_32bit + 1) % 2) != 0;
     }
   }
 
   return true;
 }
 
 }  // namespace courgette