[turbofan] Serialization of heap numbers

Bug: v8:7790
Change-Id: I9642f37f3dae3f9c07661ddca1a981e223148e49
Reviewed-on: https://chromium-review.googlesource.com/1192842Reviewed-by: Georg Neis <neis@chromium.org>
Reviewed-by: Maya Lekova <mslekova@chromium.org>
Commit-Queue: Jaroslav Sevcik <jarin@chromium.org>
Cr-Commit-Position: refs/heads/master@{#55441}

src/compiler/js-heap-broker.cc

@@ -103,14 +103,24 @@ class HeapNumberData : public HeapObjectData {
  public:
   HeapNumberData(JSHeapBroker* broker_, Handle<HeapNumber> object_,
                  HeapObjectType type_)
-      : HeapObjectData(broker_, object_, type_) {}
+      : HeapObjectData(broker_, object_, type_), value_(object_->value()) {}
+
+  double value() const { return value_; }
+
+ private:
+  double const value_;
 };
 
 class MutableHeapNumberData : public HeapObjectData {
  public:
   MutableHeapNumberData(JSHeapBroker* broker_,
                         Handle<MutableHeapNumber> object_, HeapObjectType type_)
-      : HeapObjectData(broker_, object_, type_) {}
+      : HeapObjectData(broker_, object_, type_), value_(object_->value()) {}
+
+  double value() const { return value_; }
+
+ private:
+  double const value_;
 };
 
 class ContextData : public HeapObjectData {
@@ -1003,8 +1013,6 @@ BIMODAL_ACCESSOR(HeapObject, Map, map)
 HANDLE_ACCESSOR_C(HeapObject, bool, IsExternalString)
 HANDLE_ACCESSOR_C(HeapObject, bool, IsSeqString)
 
-HANDLE_ACCESSOR_C(HeapNumber, double, value)
-
 HANDLE_ACCESSOR(JSArray, Object, length)
 
 BIMODAL_ACCESSOR_C(JSFunction, bool, has_prototype)
@@ -1039,8 +1047,6 @@ HANDLE_ACCESSOR_C(Map, int, GetInObjectPropertiesStartInWords)
 HANDLE_ACCESSOR_C(Map, int, NumberOfOwnDescriptors)
 HANDLE_ACCESSOR(Map, Object, constructor_or_backpointer)
 
-HANDLE_ACCESSOR_C(MutableHeapNumber, double, value)
-
 #define DEF_NATIVE_CONTEXT_ACCESSOR(type, name) \
   BIMODAL_ACCESSOR(NativeContext, type, name)
 BROKER_NATIVE_CONTEXT_FIELDS(DEF_NATIVE_CONTEXT_ACCESSOR)
@@ -1122,6 +1128,16 @@ double ObjectRef::OddballToNumber() const {
   }
 }
 
+double HeapNumberRef::value() const {
+  IF_BROKER_DISABLED_ACCESS_HANDLE_C(HeapNumber, value);
+  return data()->AsHeapNumber()->value();
+}
+
+double MutableHeapNumberRef::value() const {
+  IF_BROKER_DISABLED_ACCESS_HANDLE_C(MutableHeapNumber, value);
+  return data()->AsMutableHeapNumber()->value();
+}
+
 CellRef ModuleRef::GetCell(int cell_index) {
   AllowHandleAllocation handle_allocation;
   AllowHandleDereference allow_handle_dereference;