[arm64]: Fix bug introduced accidentally in r30710

src/arm64/assembler-arm64.cc

 // Copyright 2013 the V8 project authors. All rights reserved.
 //
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
@@ skipping 2228 matching lines @@
   const char pad[] = {'\0', '\0', '\0', '\0'};
   STATIC_ASSERT(sizeof(pad) == kInstructionSize);
   EmitData(pad, RoundUp(pc_offset(), kInstructionSize) - pc_offset());
 }
 
 
 void Assembler::debug(const char* message, uint32_t code, Instr params) {
 #ifdef USE_SIMULATOR
   // Don't generate simulator specific code if we are building a snapshot, which
   // might be run on real hardware.
-  // if (!serializer_enabled()) {
+  if (!serializer_enabled()) {
     // The arguments to the debug marker need to be contiguous in memory, so
     // make sure we don't try to emit pools.
     BlockPoolsScope scope(this);
 
     Label start;
     bind(&start);
 
     // Refer to instructions-arm64.h for a description of the marker and its
     // arguments.
     hlt(kImmExceptionIsDebug);
     DCHECK(SizeOfCodeGeneratedSince(&start) == kDebugCodeOffset);
     dc32(code);
     DCHECK(SizeOfCodeGeneratedSince(&start) == kDebugParamsOffset);
     dc32(params);
     DCHECK(SizeOfCodeGeneratedSince(&start) == kDebugMessageOffset);
     EmitStringData(message);
     hlt(kImmExceptionIsUnreachable);
 
     return;
-  // }
+  }
   // Fall through if Serializer is enabled.
 #endif
 
   if (params & BREAK) {
     hlt(kImmExceptionIsDebug);
   }
 }
 
 
 void Assembler::Logical(const Register& rd,
@@ skipping 859 matching lines @@
   movk(scratch, (target_offset >> 32) & 0xFFFF, 32);
   DCHECK((target_offset >> 48) == 0);
   add(rd, rd, scratch);
 }
 
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_TARGET_ARCH_ARM64