Separate double binary operation into a separate instruction class.

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_builder.h"
 #include "vm/flow_graph_compiler.h"
@@ skipping 966 matching lines @@
   return AbstractType::null();
 }
 
 
 RawAbstractType* BinaryOpComp::StaticType() const {
   // TODO(srdjan): Compute based on input types (ICData).
   return Type::DynamicType();
 }
 
 
+RawAbstractType* DoubleBinaryOpComp::StaticType() const {
+  return Type::DoubleInterface();
+}
+
+
 RawAbstractType* UnarySmiOpComp::StaticType() const {
   return Type::IntInterface();
 }
 
 
 RawAbstractType* NumberNegateComp::StaticType() const {
   return Type::NumberInterface();
 }
 
 
@@ skipping 445 matching lines @@
   if (compiler->is_ssa()) {
     ASSERT(locs()->in(0).IsRegister());
     __ PushRegister(locs()->in(0).reg());
   }
 }
 
 
 #undef __
 
 }  // namespace dart