Replace use of runtime type with name of the node in the CPS IrTracer.

pkg/compiler/lib/src/cps_ir/cps_ir_tracer.dart

 // Copyright (c) 2014, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 library dart2js.ir_tracer;
 
 import 'dart:async' show EventSink;
 
 import 'cps_ir_nodes.dart' as cps_ir hide Function;
 import '../tracer.dart';
@@ skipping 130 matching lines @@
     if (IR_TRACE_LET_CONT) {
       String dummy = names.name(node);
       String id = names.name(node.handler);
       printStmt(dummy, "LetHandler $id = <$id>");
     }
     visit(node.body);
   }
 
   visitLetMutable(cps_ir.LetMutable node) {
     String id = names.name(node.variable);
-    printStmt(id, "${node.runtimeType} $id = ${formatReference(node.value)}");
+    printStmt(id, "LetMutable $id = ${formatReference(node.value)}");
     visit(node.body);
   }
 
   visitInvokeStatic(cps_ir.InvokeStatic node) {
     String dummy = names.name(node);
     String callName = node.selector.name;
     String args = node.arguments.map(formatReference).join(', ');
     String kont = formatReference(node.continuation);
     printStmt(dummy, "InvokeStatic $callName ($args) $kont");
   }
@@ skipping 75 matching lines @@
     String condition = visit(node.condition);
     String trueCont = formatReference(node.trueContinuation);
     String falseCont = formatReference(node.falseContinuation);
     printStmt(dummy, "Branch $condition ($trueCont, $falseCont)");
   }
 
   visitSetMutableVariable(cps_ir.SetMutableVariable node) {
     String dummy = names.name(node);
     String variable = names.name(node.variable.definition);
     String value = formatReference(node.value);
-    printStmt(dummy, '${node.runtimeType} $variable := $value');
+    printStmt(dummy, 'SetMutableVariable $variable := $value');
     visit(node.body);
   }
 
   visitDeclareFunction(cps_ir.DeclareFunction node) {
     String dummy = names.name(node);
     String variable = names.name(node.variable);
     printStmt(dummy, 'DeclareFunction $variable');
     visit(node.body);
   }
 
@@ skipping 10 matching lines @@
 
   visitConstant(cps_ir.Constant node) {
     return "Constant ${node.expression.value.toStructuredString()}";
   }
 
   visitParameter(cps_ir.Parameter node) {
     return "Parameter ${names.name(node)}";
   }
 
   visitMutableVariable(cps_ir.MutableVariable node) {
-    return "${node.runtimeType} ${names.name(node)}";
+    return "MutableVariable ${names.name(node)}";
   }
 
   visitContinuation(cps_ir.Continuation node) {
     return "Continuation ${names.name(node)}";
   }
 
   visitIsTrue(cps_ir.IsTrue node) {
     return "IsTrue(${names.name(node.value.definition)})";
   }
 
@@ skipping 39 matching lines @@
   visitReifyTypeVar(cps_ir.ReifyTypeVar node) {
     return "ReifyTypeVar ${node.typeVariable.name}";
   }
 
   visitCreateFunction(cps_ir.CreateFunction node) {
     return "CreateFunction ${node.definition.element.name}";
   }
 
   visitGetMutableVariable(cps_ir.GetMutableVariable node) {
     String variable = names.name(node.variable.definition);
-    return '${node.runtimeType} $variable';
+    return 'GetMutableVariable $variable';
   }
 }
 
 /**
  * Invents (and remembers) names for Continuations, Parameters, etc.
  * The names must match the conventions used by IR Hydra, e.g.
  * Continuations and Functions must have names of form B### since they
  * are visualized as basic blocks.
  */
 class Names {
@@ skipping 219 matching lines @@
   visitIsTrue(cps_ir.IsTrue node) {
     unexpectedNode(node);
   }
   visitIdentical(cps_ir.Identical node) {
     unexpectedNode(node);
   }
   visitInterceptor(cps_ir.Interceptor node) {
     unexpectedNode(node);
   }
 }