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

courgette/disassembler_elf_32_arm.cc

Index: courgette/disassembler_elf_32_arm.cc
diff --git a/courgette/disassembler_elf_32_arm.cc b/courgette/disassembler_elf_32_arm.cc
index 0ea3e57a7b3831dac8c842fcd2ab729300515711..2cb4b56c858dccd204358aa38a949013d6dafcb2 100644
--- a/courgette/disassembler_elf_32_arm.cc
+++ b/courgette/disassembler_elf_32_arm.cc
@@ -299,11 +299,8 @@ CheckBool DisassemblerElf32ARM::TypedRVAARM::ComputeRelativeTarget(
 
 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)