| Index: sdk/lib/_internal/compiler/implementation/ssa/tracer.dart
 | 
| ===================================================================
 | 
| --- sdk/lib/_internal/compiler/implementation/ssa/tracer.dart	(revision 15954)
 | 
| +++ sdk/lib/_internal/compiler/implementation/ssa/tracer.dart	(working copy)
 | 
| @@ -306,7 +306,12 @@
 | 
|      return "$invokeType: $functionName($argumentsString)";
 | 
|    }
 | 
|  
 | 
| -  String visitIndex(HIndex node) => visitInvokeStatic(node);
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| +  String visitIndex(HIndex node) {
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| +    String receiver = temporaryId(node.receiver);
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| +    String index = temporaryId(node.index);
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| +    return "Index: $receiver[$index]";
 | 
| +  }
 | 
| +
 | 
|    String visitIndexAssign(HIndexAssign node) => visitInvokeStatic(node);
 | 
|  
 | 
|    String visitIntegerCheck(HIntegerCheck node) {
 | 
| 
 |