Correctly report callstack when current function is FunctionCall builtin

src/cpu-profiler.cc

Index: src/cpu-profiler.cc
diff --git a/src/cpu-profiler.cc b/src/cpu-profiler.cc
index e75e05d985f80c3a5dfdd77ae55bb4cc184e4b71..be64dd77ac93c041e919799b901aaf2709cb1556 100644
--- a/src/cpu-profiler.cc
+++ b/src/cpu-profiler.cc
@@ -454,6 +454,7 @@ void CpuProfiler::StartProcessorIfNotStarted() {
     }
     logger->LogCompiledFunctions();
     logger->LogAccessorCallbacks();
+    LogBuiltins();
     // Enable stack sampling.
     Sampler* sampler = logger->sampler();
     sampler->IncreaseProfilingDepth();
@@ -514,4 +515,18 @@ void CpuProfiler::StopProcessor() {
 }
 
 
+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