VM: Explicitly load function and context before calling a closure.

runtime/vm/flow_graph.cc

 // 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.
 
 #include "vm/flow_graph.h"
 
 #include "vm/bit_vector.h"
 #include "vm/flow_graph_builder.h"
 #include "vm/intermediate_language.h"
 #include "vm/longjump.h"
@@ skipping 460 matching lines @@
           last_loads->Add(index);
           load->mark_last();
         }
         continue;
       }
 
       StoreLocalInstr* store = current->AsStoreLocal();
       if (store != NULL) {
         const intptr_t index =
             store->local().BitIndexIn(num_non_copied_params_);
+        if (index >= live_in->length()) continue;  // Skip tmp_locals.
         if (kill->Contains(index)) {
           if (!live_in->Contains(index)) {
             store->mark_dead();
           }
         } else {
           if (!live_in->Contains(index)) {
             store->mark_last();
           }
           kill->Add(index);
         }
@@ skipping 727 matching lines @@
 }
 
 
 bool BlockEffects::IsSideEffectFreePath(BlockEntryInstr* from,
                                         BlockEntryInstr* to) const {
   return available_at_[to->postorder_number()]->Contains(
       from->postorder_number());
 }
 
 }  // namespace dart