[turbofan] Add schedule to visualizer output

src/compiler/pipeline.cc

Index: src/compiler/pipeline.cc
diff --git a/src/compiler/pipeline.cc b/src/compiler/pipeline.cc
index 7b1f61f30e8d858bf7882d0edcbc337cebc01aa8..fb03b71ddf1df8c1dc1afb9ddc2bcce898e3964a 100644
--- a/src/compiler/pipeline.cc
+++ b/src/compiler/pipeline.cc
@@ -294,7 +294,22 @@ struct TurboCfgFile : public std::ofstream {
 };
 
 
-static void TraceSchedule(Schedule* schedule) {
+static void TraceSchedule(CompilationInfo* info, Schedule* schedule) {
+  if (FLAG_trace_turbo) {
+    FILE* json_file = OpenVisualizerLogFile(info, NULL, "json", "a+");
+    if (json_file != nullptr) {
+      OFStream json_of(json_file);
+      json_of << "{\"name\":\"Schedule\",\"type\":\"schedule\",\"data\":\"";
+      std::stringstream schedule_stream;
+      schedule_stream << *schedule;
+      std::string schedule_string(schedule_stream.str());
+      for (const auto& c : schedule_string) {
+        json_of << AsEscapedUC16ForJSON(c);
+      }
+      json_of << "\"},\n";
+      fclose(json_file);
+    }
+  }
   if (!FLAG_trace_turbo_graph && !FLAG_trace_turbo_scheduler) return;
   OFStream os(stdout);
   os << "-- Schedule --------------------------------------\n" << *schedule;
@@ -1092,7 +1107,7 @@ Handle<Code> Pipeline::ScheduleAndGenerateCode(
   CHECK(SupportedBackend());
 
   if (data->schedule() == nullptr) Run<ComputeSchedulePhase>();
-  TraceSchedule(data->schedule());
+  TraceSchedule(data->info(), data->schedule());
 
   BasicBlockProfiler::Data* profiler_data = NULL;
   if (FLAG_turbo_profiling) {
@@ -1112,6 +1127,12 @@ Handle<Code> Pipeline::ScheduleAndGenerateCode(
                  data->sequence());
   }
 
+  std::ostringstream source_position_output;
+  if (FLAG_trace_turbo) {
+    // Output source position information before the graph is deleted.
+    data_->source_positions()->Print(source_position_output);
+  }
+
   data->DeleteGraphZone();
 
   BeginPhaseKind("register allocation");
@@ -1160,7 +1181,10 @@ Handle<Code> Pipeline::ScheduleAndGenerateCode(
         json_of << AsEscapedUC16ForJSON(c);
       }
 #endif  // ENABLE_DISASSEMBLER
-      json_of << "\"}\n]}";
+      json_of << "\"}\n],\n";
+      json_of << "\"nodePositions\":";
+      json_of << source_position_output.str();
+      json_of << "}";
       fclose(json_file);
     }
     OFStream os(stdout);