Fix bug in flow graph builder that caused invalid optimization.

runtime/vm/intermediate_language.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/intermediate_language.h"
 
 #include "vm/bit_vector.h"
 #include "vm/dart_entry.h"
 #include "vm/flow_graph_allocator.h"
 #include "vm/flow_graph_builder.h"
@@ skipping 812 matching lines @@
 }
 
 
 // Only known == targets return a Boolean.
 RawAbstractType* EqualityCompareComp::CompileType() const {
   if ((receiver_class_id() == kSmiCid) ||
       (receiver_class_id() == kDoubleCid) ||
       (receiver_class_id() == kNumberCid)) {
     return Type::BoolType();
   }
-  if (HasICData() && ic_data()->AllTargetsHaveSameOwner(kInstanceCid)) {
-    return Type::BoolType();
-  }
   return Type::DynamicType();
 }
 
 
 intptr_t EqualityCompareComp::ResultCid() const {
   if ((receiver_class_id() == kSmiCid) ||
       (receiver_class_id() == kDoubleCid) ||
       (receiver_class_id() == kNumberCid)) {
     // Known/library equalities that are guaranteed to return Boolean.
     return kBoolCid;
   }
-  if (HasICData() && ic_data()->AllTargetsHaveSameOwner(kInstanceCid)) {
-    return kBoolCid;
-  }
   return kDynamicCid;
 }
 
 
 RawAbstractType* RelationalOpComp::CompileType() const {
   if ((operands_class_id() == kSmiCid) ||
       (operands_class_id() == kDoubleCid) ||
       (operands_class_id() == kNumberCid)) {
     // Known/library relational ops that are guaranteed to return Boolean.
     return Type::BoolType();
@@ skipping 720 matching lines @@
       use->AddToEnvUseList();
     }
   }
   instr->set_env(copy);
 }
 
 
 #undef __
 
 }  // namespace dart