[turbofan] basic block profiler

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 "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/bootstrapper.h"
 #include "src/codegen.h"
 #include "src/compilation-cache.h"
+#include "src/compiler/pipeline.h"
 #include "src/cpu-profiler.h"
 #include "src/debug.h"
 #include "src/deoptimizer.h"
 #include "src/heap/spaces.h"
 #include "src/heap/sweeper-thread.h"
 #include "src/heap-profiler.h"
 #include "src/hydrogen.h"
 #include "src/ic/stub-cache.h"
 #include "src/isolate-inl.h"
 #include "src/lithium-allocator.h"
@@ skipping 1483 matching lines @@
       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),
       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_);
   }
   id_ = base::NoBarrier_AtomicIncrement(&isolate_counter_, 1);
   TRACE_ISOLATE(constructor);
 
   memset(isolate_addresses_, 0,
       sizeof(isolate_addresses_[0]) * (kIsolateAddressCount + 1));
 
@@ skipping 103 matching lines @@
 
     delete deoptimizer_data_;
     deoptimizer_data_ = NULL;
     builtins_.TearDown();
     bootstrapper_->TearDown();
 
     if (runtime_profiler_ != NULL) {
       delete runtime_profiler_;
       runtime_profiler_ = NULL;
     }
+
+    if (basic_block_profiler_ != NULL) {
+      delete basic_block_profiler_;
+      basic_block_profiler_ = NULL;
+    }
+
     heap_.TearDown();
     logger_->TearDown();
 
     delete heap_profiler_;
     heap_profiler_ = NULL;
     delete cpu_profiler_;
     cpu_profiler_ = NULL;
 
     // The default isolate is re-initializable due to legacy API.
     state_ = UNINITIALIZED;
@@ skipping 703 matching lines @@
 }
 
 
 void Isolate::CountUsage(v8::Isolate::UseCounterFeature feature) {
   if (use_counter_callback_) {
     use_counter_callback_(reinterpret_cast<v8::Isolate*>(this), feature);
   }
 }
 
 
+compiler::BasicBlockProfiler* Isolate::GetBasicBlockProfiler() {
+  if (basic_block_profiler_ == NULL) {
+    basic_block_profiler_ = new compiler::BasicBlockProfiler();
+  }
+  return basic_block_profiler_;
+}
+
+
 bool StackLimitCheck::JsHasOverflowed() const {
   StackGuard* stack_guard = isolate_->stack_guard();
 #ifdef USE_SIMULATOR
   // The simulator uses a separate JS stack.
   Address jssp_address = Simulator::current(isolate_)->get_sp();
   uintptr_t jssp = reinterpret_cast<uintptr_t>(jssp_address);
   if (jssp < stack_guard->real_jslimit()) return true;
 #endif  // USE_SIMULATOR
   return GetCurrentStackPosition() < stack_guard->real_climit();
 }
 
 
 bool PostponeInterruptsScope::Intercept(StackGuard::InterruptFlag flag) {
   // First check whether the previous scope intercepts.
   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