[turbofan] Add support for storing to double fields.

src/compiler/node-properties.cc

 // Copyright 2015 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "src/compiler/common-operator.h"
 #include "src/compiler/graph.h"
 #include "src/compiler/node-properties.h"
 #include "src/compiler/operator-properties.h"
 #include "src/compiler/verifier.h"
+#include "src/types-inl.h"
 
 namespace v8 {
 namespace internal {
 namespace compiler {
 
 // static
 int NodeProperties::PastValueIndex(Node* node) {
   return FirstValueIndex(node) + node->op()->ValueInputCount();
 }
 
@@ skipping 249 matching lines @@
   }
 #ifdef DEBUG
   for (size_t index = 0; index < projection_count; ++index) {
     DCHECK_NOT_NULL(projections[index]);
   }
 #endif
 }
 
 
 // static
+Type* NodeProperties::GetTypeOrAny(Node* node) {
+  return IsTyped(node) ? node->type() : Type::Any();
+}
+
+
+// static
 bool NodeProperties::AllValueInputsAreTyped(Node* node) {
   int input_count = node->op()->ValueInputCount();
   for (int index = 0; index < input_count; ++index) {
     if (!IsTyped(GetValueInput(node, index))) return false;
   }
   return true;
 }
 
 
 // static
 bool NodeProperties::IsInputRange(Edge edge, int first, int num) {
   if (num == 0) return false;
   int const index = edge.index();
   return first <= index && index < first + num;
 }
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8