[turbofan] Improve JSON output

test/cctest/compiler/test-graph-visualizer.cc

 // Copyright 2014 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 "src/v8.h"
 #include "test/cctest/cctest.h"
 
 #include "src/compiler/common-operator.h"
 #include "src/compiler/graph.h"
 #include "src/compiler/graph-visualizer.h"
 #include "src/compiler/js-operator.h"
 #include "src/compiler/machine-operator.h"
 #include "src/compiler/node.h"
 #include "src/compiler/operator.h"
 #include "src/compiler/schedule.h"
 #include "src/compiler/scheduler.h"
+#include "src/compiler/source-position.h"
 #include "src/compiler/verifier.h"
 
 using namespace v8::internal;
 using namespace v8::internal::compiler;
 
 TEST(NodeWithNullInputReachableFromEnd) {
   HandleAndZoneScope scope;
   Graph graph(scope.main_zone());
   CommonOperatorBuilder common(scope.main_zone());
 
   Node* start = graph.NewNode(common.Start(0));
   graph.SetStart(start);
   Node* k = graph.NewNode(common.Int32Constant(0));
   Node* phi = graph.NewNode(common.Phi(kMachAnyTagged, 1), k, start);
   phi->ReplaceInput(0, NULL);
   graph.SetEnd(phi);
 
   OFStream os(stdout);
   os << AsDOT(graph);
-  os << AsJSON(graph);
+  SourcePositionTable table(&graph);
+  os << AsJSON(graph, &table);
 }
 
 
 TEST(NodeWithNullControlReachableFromEnd) {
   HandleAndZoneScope scope;
   Graph graph(scope.main_zone());
   CommonOperatorBuilder common(scope.main_zone());
 
   Node* start = graph.NewNode(common.Start(0));
   graph.SetStart(start);
   Node* k = graph.NewNode(common.Int32Constant(0));
   Node* phi = graph.NewNode(common.Phi(kMachAnyTagged, 1), k, start);
   phi->ReplaceInput(1, NULL);
   graph.SetEnd(phi);
 
   OFStream os(stdout);
   os << AsDOT(graph);
-  os << AsJSON(graph);
+  SourcePositionTable table(&graph);
+  os << AsJSON(graph, &table);
 }
 
 
 TEST(NodeWithNullInputReachableFromStart) {
   HandleAndZoneScope scope;
   Graph graph(scope.main_zone());
   CommonOperatorBuilder common(scope.main_zone());
 
   Node* start = graph.NewNode(common.Start(0));
   graph.SetStart(start);
   Node* k = graph.NewNode(common.Int32Constant(0));
   Node* phi = graph.NewNode(common.Phi(kMachAnyTagged, 1), k, start);
   phi->ReplaceInput(0, NULL);
   graph.SetEnd(start);
 
   OFStream os(stdout);
   os << AsDOT(graph);
-  os << AsJSON(graph);
+  SourcePositionTable table(&graph);
+  os << AsJSON(graph, &table);
 }
 
 
 TEST(NodeWithNullControlReachableFromStart) {
   HandleAndZoneScope scope;
   Graph graph(scope.main_zone());
   CommonOperatorBuilder common(scope.main_zone());
 
   Node* start = graph.NewNode(common.Start(0));
   graph.SetStart(start);
   Node* merge = graph.NewNode(common.Merge(2), start, start);
   merge->ReplaceInput(1, NULL);
   graph.SetEnd(merge);
 
   OFStream os(stdout);
   os << AsDOT(graph);
-  os << AsJSON(graph);
+  SourcePositionTable table(&graph);
+  os << AsJSON(graph, &table);
 }