Split array loads/stores for growable arrays into two IL instructions.

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 54 matching lines @@
 }
 
 
 bool CheckArrayBoundInstr::AttributesEqual(Definition* other) const {
   CheckArrayBoundInstr* other_check = other->AsCheckArrayBound();
   ASSERT(other_check != NULL);
   return array_type() == other_check->array_type();
 }
 
 
+bool LoadVMFieldInstr::AttributesEqual(Definition* other) const {
+  LoadVMFieldInstr* other_load = other->AsLoadVMField();
+  ASSERT(other_load != NULL);
+  ASSERT((offset_in_bytes() != other_load->offset_in_bytes()) ||
+         ((immutable_ == other_load->immutable_) &&
+          (ResultCid() == other_load->ResultCid())));
+  return offset_in_bytes() == other_load->offset_in_bytes();
+}
+
+
 // Returns true if the value represents a constant.
 bool Value::BindsToConstant() const {
   return definition()->IsConstant();
 }
 
 
 // Returns true if the value represents constant null.
 bool Value::BindsToConstantNull() const {
   ConstantInstr* constant = definition()->AsConstant();
   return (constant != NULL) && constant->value().IsNull();
@@ skipping 1569 matching lines @@
     value->set_use_index(use_index++);
     value->AddToEnvUseList();
   }
   instr->set_env(copy);
 }
 
 
 #undef __
 
 }  // namespace dart