Fix issue 9608: When replacing call with assert assignable, transfer call's deopt_id to the new nod…

runtime/vm/flow_graph_optimizer.cc

 // Copyright (c) 2013, 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.
 
 #include "vm/flow_graph_optimizer.h"
 
 #include "vm/bit_vector.h"
 #include "vm/cha.h"
 #include "vm/flow_graph_builder.h"
 #include "vm/flow_graph_compiler.h"
@@ skipping 1852 matching lines @@
   }
   const String& dst_name = String::ZoneHandle(
       Symbols::New(Exceptions::kCastErrorDstName));
   AssertAssignableInstr* assert_as =
       new AssertAssignableInstr(call->token_pos(),
                                 new Value(left),
                                 new Value(instantiator),
                                 new Value(type_args),
                                 type,
                                 dst_name);
+  assert_as->deopt_id_ = call->deopt_id();
   ReplaceCall(call, assert_as);
 }
 
 
 // Tries to optimize instance call by replacing it with a faster instruction
 // (e.g, binary op, field load, ..).
 void FlowGraphOptimizer::VisitInstanceCall(InstanceCallInstr* instr) {
   if (!instr->HasICData() || (instr->ic_data()->NumberOfChecks() == 0)) {
     return;
   }
@@ skipping 2786 matching lines @@
   if (changed) {
     // We may have changed the block order and the dominator tree.
     flow_graph->DiscoverBlocks();
     GrowableArray<BitVector*> dominance_frontier;
     flow_graph->ComputeDominators(&dominance_frontier);
   }
 }
 
 
 }  // namespace dart