[turbofan] basic block profiler

src/isolate.cc

Index: src/isolate.cc
diff --git a/src/isolate.cc b/src/isolate.cc
index c6a8b813beb74dac3f34f4c4759060922f6b5ff8..edc832629104b122a1061ef1ab7d83866a03ebe4 100644
--- a/src/isolate.cc
+++ b/src/isolate.cc
@@ -10,6 +10,7 @@
 #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"
@@ -1516,7 +1517,8 @@ Isolate::Isolate()
       num_sweeper_threads_(0),
       stress_deopt_count_(0),
       next_optimization_id_(0),
-      use_counter_callback_(NULL) {
+      use_counter_callback_(NULL),
+      basic_block_profiler_(NULL) {
   {
     base::LockGuard<base::Mutex> lock_guard(thread_data_table_mutex_.Pointer());
     CHECK(thread_data_table_);
@@ -1640,6 +1642,10 @@ void Isolate::Deinit() {
       delete runtime_profiler_;
       runtime_profiler_ = NULL;
     }
+
+    delete basic_block_profiler_;
+    basic_block_profiler_ = NULL;
+
     heap_.TearDown();
     logger_->TearDown();
 
@@ -2363,6 +2369,14 @@ void Isolate::CountUsage(v8::Isolate::UseCounterFeature feature) {
 }
 
 
+BasicBlockProfiler* Isolate::GetOrCreateBasicBlockProfiler() {
+  if (basic_block_profiler_ == NULL) {
+    basic_block_profiler_ = new BasicBlockProfiler();
+  }
+  return basic_block_profiler_;
+}
+
+
 bool StackLimitCheck::JsHasOverflowed() const {
   StackGuard* stack_guard = isolate_->stack_guard();
 #ifdef USE_SIMULATOR