[arm64] USE unused variables in simulator

src/arm64/simulator-arm64.cc

 // Copyright 2013 the V8 project 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 <stdlib.h>
 #include <cmath>
 #include <cstdarg>
 
 #if V8_TARGET_ARCH_ARM64
 
@@ skipping 1944 matching lines @@
 void Simulator::VisitLoadStoreAcquireRelease(Instruction* instr) {
   unsigned rs = instr->Rs();
   unsigned rt = instr->Rt();
   unsigned rn = instr->Rn();
   LoadStoreAcquireReleaseOp op = static_cast<LoadStoreAcquireReleaseOp>(
       instr->Mask(LoadStoreAcquireReleaseMask));
   int32_t is_acquire_release = instr->LoadStoreXAcquireRelease();
   int32_t is_not_exclusive = instr->LoadStoreXNotExclusive();
   int32_t is_load = instr->LoadStoreXLoad();
   int32_t is_pair = instr->LoadStoreXPair();
+  USE(is_acquire_release);
+  USE(is_not_exclusive);
+  USE(is_pair);
   DCHECK_NE(is_acquire_release, 0);
   DCHECK_EQ(is_not_exclusive, 0);  // Non exclusive unimplemented.
   DCHECK_EQ(is_pair, 0);           // Pair unimplemented.
   unsigned access_size = 1 << instr->LoadStoreXSizeLog2();
   uintptr_t address = LoadStoreAddress(rn, 0, AddrMode::Offset);
   DCHECK(address % access_size == 0);
   base::LockGuard<base::Mutex> lock_guard(&global_monitor_.Pointer()->mutex);
   if (is_load != 0) {
     local_monitor_.NotifyLoadExcl(address, get_transaction_size(access_size));
     global_monitor_.Pointer()->NotifyLoadExcl_Locked(
@@ skipping 2185 matching lines @@
   processor->prev_ = nullptr;
   processor->next_ = nullptr;
 }
 
 #endif  // USE_SIMULATOR
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_TARGET_ARCH_ARM64