[turbolizer] Show operator properties and arity in tooltip.

tools/turbolizer/node.js

 // 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.
 
 var DEFAULT_NODE_WIDTH = 240;
 var DEFAULT_NODE_HEIGHT = 40;
 var TYPE_HEIGHT = 25;
 var DEFAULT_NODE_BUBBLE_RADIUS = 4;
 var NODE_INPUT_WIDTH = 20;
 var MINIMUM_NODE_INPUT_APPROACH = 20;
@@ skipping 30 matching lines @@
   },
   isMachine: function() {
     return !(this.isControl() || this.isInput() ||
              this.isJavaScript() || this.isSimplified());
   },
   getTotalNodeWidth: function() {
     var inputWidth = this.inputs.length * NODE_INPUT_WIDTH;
     return Math.max(inputWidth, this.width);
   },
   getTitle: function() {
-    return this.title;
+    var propsString;
+    if (this.properties === undefined) {
+      propsString = "";
+    } else if (this.properties === "") {
+      propsString = "no properties";
+    } else {
+      propsString = "[" + this.properties + "]";
+    }
+    return this.title + "\n" + propsString + "\n" + this.opinfo;
   },
   getDisplayLabel: function() {
     var result = this.id + ":" + this.label;
     if (result.length > 30) {
       return this.id + ":" + this.opcode;
     } else  {
       return result;
     }
   },
   getType: function() {
@@ skipping 67 matching lines @@
   },
   getFunctionRelativeSourcePosition: function(graph) {
     return this.pos - graph.sourcePosition;
   },
   hasBackEdges: function() {
     return (this.opcode == "Loop") ||
       ((this.opcode == "Phi" || this.opcode == "EffectPhi") &&
        this.inputs[this.inputs.length - 1].source.opcode == "Loop");
   }
 };