Remove unnecessary isolate TLS from compiler jobs

src/optimizing-compiler-thread.cc

 // Copyright 2012 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 "src/optimizing-compiler-thread.h"
 
 #include "src/v8.h"
 
 #include "src/base/atomicops.h"
 #include "src/full-codegen.h"
 #include "src/hydrogen.h"
 #include "src/isolate.h"
 #include "src/v8threads.h"
 
 namespace v8 {
 namespace internal {
 
 class OptimizingCompilerThread::CompileTask : public v8::Task {
  public:
   CompileTask(Isolate* isolate, OptimizedCompileJob* job)
       : isolate_(isolate), job_(job) {}
 
   virtual ~CompileTask() {}
 
  private:
   // v8::Task overrides.
   virtual void Run() OVERRIDE {
-    Isolate::SetIsolateThreadLocals(isolate_, NULL);
     DisallowHeapAllocation no_allocation;
     DisallowHandleAllocation no_handles;
     DisallowHandleDereference no_deref;
 
     // The function may have already been optimized by OSR.  Simply continue.
     OptimizedCompileJob::Status status = job_->OptimizeGraph();
     USE(status);  // Prevent an unused-variable error in release mode.
     DCHECK(status != OptimizedCompileJob::FAILED);
 
     // The function may have already been optimized by OSR.  Simply continue.
@@ skipping 33 matching lines @@
   }
 }
 
 
 void OptimizingCompilerThread::Run() {
 #ifdef DEBUG
   { base::LockGuard<base::Mutex> lock_guard(&thread_id_mutex_);
     thread_id_ = ThreadId::Current().ToInteger();
   }
 #endif
-  Isolate::SetIsolateThreadLocals(isolate_, NULL);
   DisallowHeapAllocation no_allocation;
   DisallowHandleAllocation no_handles;
   DisallowHandleDereference no_deref;
 
   if (FLAG_job_based_recompilation) {
     return;
   }
 
   base::ElapsedTimer total_timer;
   if (FLAG_trace_concurrent_recompilation) total_timer.Start();
@@ skipping 343 matching lines @@
 
 
 bool OptimizingCompilerThread::IsOptimizerThread() {
   base::LockGuard<base::Mutex> lock_guard(&thread_id_mutex_);
   return ThreadId::Current().ToInteger() == thread_id_;
 }
 #endif
 
 
 } }  // namespace v8::internal