Merge libv1.

sdk/lib/_internal/compiler/implementation/ssa/tracer.dart

 // Copyright (c) 2012, 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 tracer;
 
 import 'dart:io';
 import 'ssa.dart';
 import '../js_backend/js_backend.dart';
 import '../dart2jslib.dart';
@@ skipping 440 matching lines @@
   }
 
   String visitThis(HThis node) => "this";
 
   String visitThrow(HThrow node) => "Throw ${temporaryId(node.inputs[0])}";
 
   String visitTruncatingDivide(HTruncatingDivide node) {
     return visitInvokeStatic(node);
   }
 
+  String visitExitTry(HExitTry node) {
+    return "Exit try";
+  }
+
   String visitTry(HTry node) {
     List<HBasicBlock> successors = currentBlock.successors;
     String tryBlock = 'B${successors[0].id}';
     String catchBlock = 'none';
     if (node.catchBlock != null) {
       catchBlock = 'B${successors[1].id}';
     }
 
     String finallyBlock = 'none';
     if (node.finallyBlock != null) {
@@ skipping 53 matching lines @@
   }
 
   String visitTypeConversion(HTypeConversion node) {
     return "TypeConversion: ${temporaryId(node.checkedInput)} to ${node.type}";
   }
 
   String visitRangeConversion(HRangeConversion node) {
     return "RangeConversion: ${node.checkedInput}";
   }
 }