Enable redundancy elimination for array loads.

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 114 matching lines @@
 bool LoadStaticFieldInstr::AttributesEqual(Instruction* other) const {
   LoadStaticFieldInstr* other_load = other->AsLoadStaticField();
   ASSERT(other_load != NULL);
   // Assert that the field is initialized.
   ASSERT(field().value() != Object::sentinel());
   ASSERT(field().value() != Object::transition_sentinel());
   return field().raw() == other_load->field().raw();
 }
 
 
+bool LoadIndexedInstr::AttributesEqual(Instruction* other) const {
+  LoadIndexedInstr* other_load = other->AsLoadIndexed();
+  ASSERT(other_load != NULL);
+  return class_id() == other_load->class_id();
+}
+
+
 bool ConstantInstr::AttributesEqual(Instruction* other) const {
   ConstantInstr* other_constant = other->AsConstant();
   ASSERT(other_constant != NULL);
   return (value().raw() == other_constant->value().raw());
 }
 
 
 // Returns true if the value represents a constant.
 bool Value::BindsToConstant() const {
   return definition()->IsConstant();
@@ skipping 2058 matching lines @@
     new_max = new_max.Clamp();
   }
 
   return Range::Update(&range_, new_min, new_max);
 }
 
 
 #undef __
 
 }  // namespace dart