Correctly report callstack when current function is FunctionCall builtin

src/cpu-profiler.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 428 matching lines @@
     processor_ = new ProfilerEventsProcessor(generator_, profiles_);
     is_profiling_ = true;
     processor_->StartSynchronously();
     // Enumerate stuff we already have in the heap.
     if (isolate_->heap()->HasBeenSetUp()) {
       if (!FLAG_prof_browser_mode) {
         isolate_->logger()->LogCodeObjects();
       }
       isolate_->logger()->LogCompiledFunctions();
       isolate_->logger()->LogAccessorCallbacks();
+      LogBuiltins();
     }
     // Enable stack sampling.
     Sampler* sampler = isolate_->logger()->sampler();
     sampler->IncreaseProfilingDepth();
     if (!sampler->IsActive()) {
       sampler->Start();
       need_to_stop_sampler_ = true;
     }
   }
 }
@@ skipping 41 matching lines @@
   processor_->Stop();
   processor_->Join();
   delete processor_;
   delete generator_;
   processor_ = NULL;
   generator_ = NULL;
   logger->logging_nesting_ = saved_logging_nesting_;
 }
 
 
+void CpuProfiler::LogBuiltins() {
+  Builtins* builtins = isolate_->builtins();
+  ASSERT(builtins->is_initialized());
+  for (int i = 0; i < Builtins::builtin_count; i++) {
+    CodeEventsContainer evt_rec(CodeEventRecord::REPORT_BUILTIN);
+    ReportBuiltinEventRecord* rec = &evt_rec.ReportBuiltinEventRecord_;
+    Builtins::Name id = static_cast<Builtins::Name>(i);
+    rec->start = builtins->builtin(id)->address();
+    rec->builtin_id = id;
+    processor_->Enqueue(evt_rec);
+  }
+}
+
+
 } }  // namespace v8::internal