Clean up some isolate macros.

src/isolate.cc

 // Copyright 2012 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
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 1532 matching lines @@
       context_slot_cache_(NULL),
       descriptor_lookup_cache_(NULL),
       handle_scope_implementer_(NULL),
       unicode_cache_(NULL),
       runtime_zone_(this),
       inner_pointer_to_code_cache_(NULL),
       write_iterator_(NULL),
       global_handles_(NULL),
       eternal_handles_(NULL),
       thread_manager_(NULL),
-      fp_stubs_generated_(false),
       has_installed_extensions_(false),
       string_tracker_(NULL),
       regexp_stack_(NULL),
       date_cache_(NULL),
       code_stub_interface_descriptors_(NULL),
       call_descriptors_(NULL),
       // TODO(bmeurer) Initialized lazily because it depends on flags; can
       // be fixed once the default isolate cleanup is done.
       random_number_generator_(NULL),
       has_fatal_error_(false),
       use_crankshaft_(true),
       initialized_from_snapshot_(false),
       cpu_profiler_(NULL),
       heap_profiler_(NULL),
       function_entry_hook_(NULL),
       deferred_handles_head_(NULL),
       optimizing_compiler_thread_(NULL),
       sweeper_thread_(NULL),
       num_sweeper_threads_(0),
-      max_available_threads_(0),
       stress_deopt_count_(0),
       next_optimization_id_(0) {
   id_ = NoBarrier_AtomicIncrement(&isolate_counter_, 1);
   TRACE_ISOLATE(constructor);
 
   memset(isolate_addresses_, 0,
       sizeof(isolate_addresses_[0]) * (kIsolateAddressCount + 1));
 
   heap_.isolate_ = this;
   stack_guard_.isolate_ = this;
 
   // ThreadManager is initialized early to support locking an isolate
   // before it is entered.
   thread_manager_ = new ThreadManager();
   thread_manager_->isolate_ = this;
 
-#if V8_TARGET_ARCH_ARM && !defined(__arm__) || \
-    V8_TARGET_ARCH_A64 && !defined(__aarch64__) || \
-    V8_TARGET_ARCH_MIPS && !defined(__mips__)
-  simulator_initialized_ = false;
-  simulator_i_cache_ = NULL;
-  simulator_redirection_ = NULL;
-#endif
-
 #ifdef DEBUG
   // heap_histograms_ initializes itself.
   memset(&js_spill_information_, 0, sizeof(js_spill_information_));
-  memset(code_kind_statistics_, 0,
-         sizeof(code_kind_statistics_[0]) * Code::NUMBER_OF_KINDS);
 #endif
 
 #ifdef ENABLE_DEBUGGER_SUPPORT
   debug_ = NULL;
   debugger_ = NULL;
 #endif
 
   handle_scope_data_.Initialize();
 
 #define ISOLATE_INIT_EXECUTE(type, name, initial_value)                        \
@@ skipping 716 matching lines @@
 
 #ifdef DEBUG
 #define ISOLATE_FIELD_OFFSET(type, name, ignored)                       \
 const intptr_t Isolate::name##_debug_offset_ = OFFSET_OF(Isolate, name##_);
 ISOLATE_INIT_LIST(ISOLATE_FIELD_OFFSET)
 ISOLATE_INIT_ARRAY_LIST(ISOLATE_FIELD_OFFSET)
 #undef ISOLATE_FIELD_OFFSET
 #endif
 
 } }  // namespace v8::internal