Fix first part on liveness analysis of bug https://code.google.com/p/dart/issues/detail?id=9687: a …

sdk/lib/_internal/compiler/implementation/ssa/builder.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.
 
 part of ssa;
 
 /**
  * A special element for the extra parameter taken by intercepted
  * methods. We need to override [Element.computeType] because our
  * optimizers may look at its declared type.
@@ skipping 3881 matching lines @@
   }
 
   visitThrow(Throw node) {
     if (node.expression == null) {
       HInstruction exception = rethrowableException;
       if (exception == null) {
         exception = graph.addConstantNull(constantSystem);
         compiler.internalError(
             'rethrowableException should not be null', node: node);
       }
+      handleInTryStatement();

[ngeoffray, 2013/04/10 14:51:16]

We do this for return/break/continue, but we forgot to add it to throw.

       close(new HThrow(exception, isRethrow: true));
     } else {
       visit(node.expression);
+      handleInTryStatement();
       close(new HThrow(pop()));
     }
   }
 
   visitTypeAnnotation(TypeAnnotation node) {
     compiler.internalError('visiting type annotation in SSA builder',
                            node: node);
   }
 
   visitVariableDefinitions(VariableDefinitions node) {
@@ skipping 1247 matching lines @@
           new HSubGraphBlockInformation(elseBranch.graph));
 
     HBasicBlock conditionStartBlock = conditionBranch.block;
     conditionStartBlock.setBlockFlow(info, joinBlock);
     SubGraph conditionGraph = conditionBranch.graph;
     HIf branch = conditionGraph.end.last;
     assert(branch is HIf);
     branch.blockInformation = conditionStartBlock.blockFlow;
   }
 }