Record a correct deoptimization environment for slow-path code.

runtime/vm/intermediate_language.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/intermediate_language.h"
 
 #include "vm/bigint_operations.h"
 #include "vm/bit_vector.h"
 #include "vm/dart_entry.h"
 #include "vm/flow_graph_allocator.h"
@@ skipping 1905 matching lines @@
 
 
 Environment* Environment::DeepCopy(intptr_t length) const {
   ASSERT(length <= values_.length());
   Environment* copy =
       new Environment(length,
                       fixed_parameter_count_,
                       deopt_id_,
                       function_,
                       (outer_ == NULL) ? NULL : outer_->DeepCopy());
+  if (locations_ != NULL) {
+    Location* new_locations =
+        Isolate::Current()->current_zone()->Alloc<Location>(length);
+    copy->set_locations(new_locations);
+  }
   for (intptr_t i = 0; i < length; ++i) {
     copy->values_.Add(values_[i]->Copy());
+    if (locations_ != NULL) {
+      copy->locations_[i] = locations_[i];
+    }
   }
   return copy;
 }
 
 
 // Copies the environment and updates the environment use lists.
 void Environment::DeepCopyTo(Instruction* instr) const {
   for (Environment::DeepIterator it(instr->env()); !it.Done(); it.Advance()) {
     it.CurrentValue()->RemoveFromUseList();
   }
@@ skipping 764 matching lines @@
       return kCosRuntimeEntry;
     default:
       UNREACHABLE();
   }
   return kSinRuntimeEntry;
 }
 
 #undef __
 
 }  // namespace dart