[visualizer]: Add types to visualizer output

src/compiler/graph-visualizer.cc

 // Copyright 2013 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/compiler/graph-visualizer.h"
 
 #include <sstream>
 #include <string>
 
 #include "src/code-stubs.h"
@@ skipping 111 matching lines @@
       os_ << ",\"rankInputs\":[0]";
     }
     SourcePosition position = positions_->GetSourcePosition(node);
     if (!position.IsUnknown()) {
       DCHECK(!position.IsInvalid());
       os_ << ",\"pos\":" << position.raw();
     }
     os_ << ",\"opcode\":\"" << IrOpcode::Mnemonic(node->opcode()) << "\"";
     os_ << ",\"control\":" << (NodeProperties::IsControl(node) ? "true"
                                                                : "false");
+    if (NodeProperties::IsTyped(node)) {
+      Bounds bounds = NodeProperties::GetBounds(node);
+      std::ostringstream upper;
+      bounds.upper->PrintTo(upper);
+      std::ostringstream lower;
+      bounds.lower->PrintTo(lower);
+      os_ << ",\"upper_type\":\"" << Escaped(upper, "\"") << "\"";
+      os_ << ",\"lower_type\":\"" << Escaped(lower, "\"") << "\"";
+    }
     os_ << "}";
   }
 
  private:
   std::ostream& os_;
   AllNodes all_;
   const SourcePositionTable* positions_;
   bool first_node_;
 
   DISALLOW_COPY_AND_ASSIGN(JSONGraphNodeWriter);
@@ skipping 678 matching lines @@
         os << "#" << SafeId(i) << ":" << SafeMnemonic(i);
       }
       os << ")" << std::endl;
     }
   }
   return os;
 }
 }
 }
 }  // namespace v8::internal::compiler