[turbofan] Output file for C1 visualizer.

src/isolate.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 <stdlib.h>
 
+#include <fstream>  // NOLINT(readability/streams)
+
 #include "src/v8.h"
 
 #include "src/ast.h"
 #include "src/base/platform/platform.h"
 #include "src/base/sys-info.h"
 #include "src/base/utils/random-number-generator.h"
 #include "src/basic-block-profiler.h"
 #include "src/bootstrapper.h"
 #include "src/codegen.h"
 #include "src/compilation-cache.h"
@@ skipping 1907 matching lines @@
         Max(Min(base::SysInfo::NumberOfProcessors(), 4), 1);
   }
 
   if (FLAG_trace_hydrogen || FLAG_trace_hydrogen_stubs) {
     PrintF("Concurrent recompilation has been disabled for tracing.\n");
   } else if (OptimizingCompilerThread::Enabled(max_available_threads_)) {
     optimizing_compiler_thread_ = new OptimizingCompilerThread(this);
     optimizing_compiler_thread_->Start();
   }
 
+  if (FLAG_trace_turbo) {
+    // Erase the file.
+    std::ofstream turbo_cfg_stream("turbo.cfg",
+                                   std::fstream::out | std::fstream::trunc);
+  }
+
   // If we are deserializing, read the state into the now-empty heap.
   if (!create_heap_objects) {
     des->Deserialize(this);
   }
   stub_cache_->Initialize();
 
   // Finish initialization of ThreadLocal after deserialization is done.
   clear_pending_exception();
   clear_pending_message();
   clear_scheduled_exception();
@@ skipping 437 matching lines @@
   if (prev_ && prev_->Intercept(flag)) return true;
   // Then check whether this scope intercepts.
   if ((flag & intercept_mask_)) {
     intercepted_flags_ |= flag;
     return true;
   }
   return false;
 }
 
 } }  // namespace v8::internal