Serializer: serialize internal references via object visitor.

src/x64/assembler-x64-inl.h

Index: src/x64/assembler-x64-inl.h
diff --git a/src/x64/assembler-x64-inl.h b/src/x64/assembler-x64-inl.h
index e8f90c6aca5c39c2f7983a5c17be787e600886fd..d51accb8c489ee6558de73947660db923b42cb33 100644
--- a/src/x64/assembler-x64-inl.h
+++ b/src/x64/assembler-x64-inl.h
@@ -314,9 +314,9 @@ Address RelocInfo::target_address() {
 
 
 Address RelocInfo::target_address_address() {
-  DCHECK(IsCodeTarget(rmode_) || IsRuntimeEntry(rmode_)
-                              || rmode_ == EMBEDDED_OBJECT
-                              || rmode_ == EXTERNAL_REFERENCE);
+  DCHECK(IsCodeTarget(rmode_) || IsRuntimeEntry(rmode_) ||
+         rmode_ == EMBEDDED_OBJECT || rmode_ == EXTERNAL_REFERENCE ||
+         rmode_ == INTERNAL_REFERENCE);
   return reinterpret_cast<Address>(pc_);
 }
 
@@ -378,9 +378,9 @@ Address RelocInfo::target_internal_reference() {
 }
 
 
-void RelocInfo::set_target_internal_reference(Address target) {
-  DCHECK(rmode_ == INTERNAL_REFERENCE);
-  Memory::Address_at(pc_) = target;
+void Assembler::deserialization_set_target_internal_reference_at(
+    Address instruction, Address target) {
+  Memory::Address_at(instruction) = target;
 }
 
 
@@ -450,7 +450,8 @@ void RelocInfo::set_target_cell(Cell* cell,
 
 
 void RelocInfo::WipeOut() {
-  if (IsEmbeddedObject(rmode_) || IsExternalReference(rmode_)) {
+  if (IsEmbeddedObject(rmode_) || IsExternalReference(rmode_) ||
+      IsInternalReference(rmode_)) {
     Memory::Address_at(pc_) = NULL;
   } else if (IsCodeTarget(rmode_) || IsRuntimeEntry(rmode_)) {
     // Effectively write zero into the relocation.
@@ -554,7 +555,8 @@ void RelocInfo::Visit(Isolate* isolate, ObjectVisitor* visitor) {
     visitor->VisitCell(this);
   } else if (mode == RelocInfo::EXTERNAL_REFERENCE) {
     visitor->VisitExternalReference(this);
-    CpuFeatures::FlushICache(pc_, sizeof(Address));
+  } else if (mode == RelocInfo::INTERNAL_REFERENCE) {
+    visitor->VisitInternalReference(this);
   } else if (RelocInfo::IsCodeAgeSequence(mode)) {
     visitor->VisitCodeAgeSequence(this);
   } else if (((RelocInfo::IsJSReturn(mode) &&
@@ -581,7 +583,8 @@ void RelocInfo::Visit(Heap* heap) {
     StaticVisitor::VisitCell(heap, this);
   } else if (mode == RelocInfo::EXTERNAL_REFERENCE) {
     StaticVisitor::VisitExternalReference(this);
-    CpuFeatures::FlushICache(pc_, sizeof(Address));
+  } else if (mode == RelocInfo::INTERNAL_REFERENCE) {
+    StaticVisitor::VisitInternalReference(this);
   } else if (RelocInfo::IsCodeAgeSequence(mode)) {
     StaticVisitor::VisitCodeAgeSequence(heap, this);
   } else if (heap->isolate()->debug()->has_break_points() &&