Unbox/Box Float64x2 and inline typed array loads and stores

runtime/vm/object.cc

Index: runtime/vm/object.cc
diff --git a/runtime/vm/object.cc b/runtime/vm/object.cc
index df878d46bf24b22c675c544a76ca1be8610116ab..b84ed56a7636f0684ce9eb46977c08a403a61e89 100644
--- a/runtime/vm/object.cc
+++ b/runtime/vm/object.cc
@@ -12403,6 +12403,12 @@ bool AbstractType::IsFloat32x4Type() const {
 }
 
 
+bool AbstractType::IsFloat64x2Type() const {
+  return HasResolvedTypeClass() &&
+      (type_class() == Type::Handle(Type::Float64x2()).type_class());
+}
+
+
 bool AbstractType::IsInt32x4Type() const {
   return HasResolvedTypeClass() &&
       (type_class() == Type::Handle(Type::Int32x4()).type_class());
@@ -12571,6 +12577,11 @@ RawType* Type::Float32x4() {
 }
 
 
+RawType* Type::Float64x2() {
+  return Isolate::Current()->object_store()->float64x2_type();
+}
+
+
 RawType* Type::Int32x4() {
   return Isolate::Current()->object_store()->int32x4_type();
 }