Revert "In-object double fields unboxing (for 64-bit only)."

src/objects-printer.cc

Index: src/objects-printer.cc
diff --git a/src/objects-printer.cc b/src/objects-printer.cc
index 45ff33c2d289cb20dc2d7e03df7abaa72797d0b8..2fb924cfc99a19b94d964ddd364c7545d16f3d81 100644
--- a/src/objects-printer.cc
+++ b/src/objects-printer.cc
@@ -233,12 +233,8 @@ void JSObject::PrintProperties(std::ostream& os) {  // NOLINT
       switch (descs->GetType(i)) {
         case FIELD: {
           FieldIndex index = FieldIndex::ForDescriptor(map(), i);
-          if (IsUnboxedDoubleField(index)) {
-            os << "<unboxed double> " << RawFastDoublePropertyAt(index);
-          } else {
-            os << Brief(RawFastPropertyAt(index));
-          }
-          os << " (field at offset " << index.property_index() << ")\n";
+          os << Brief(RawFastPropertyAt(index)) << " (field at offset "
+             << index.property_index() << ")\n";
           break;
         }
         case CONSTANT:
@@ -434,9 +430,6 @@ void Map::MapPrint(std::ostream& os) {  // NOLINT
   os << "\n - instance descriptors " << (owns_descriptors() ? "(own) " : "")
      << "#" << NumberOfOwnDescriptors() << ": "
      << Brief(instance_descriptors());
-  if (FLAG_unbox_double_fields) {
-    os << "\n - layout descriptor: " << Brief(layout_descriptor());
-  }
   if (HasTransitionArray()) {
     os << "\n - transitions: " << Brief(transitions());
   }
@@ -445,9 +438,6 @@ void Map::MapPrint(std::ostream& os) {  // NOLINT
   os << "\n - code cache: " << Brief(code_cache());
   os << "\n - dependent code: " << Brief(dependent_code());
   os << "\n";
-  instance_descriptors()->PrintDescriptors(os);
-  os << "\n";
-  if (FLAG_unbox_double_fields) layout_descriptor()->Print(os);
 }
 
 
@@ -1086,43 +1076,6 @@ void DescriptorArray::PrintDescriptors(std::ostream& os) {  // NOLINT
 }
 
 
-static void PrintBitMask(std::ostream& os, uint32_t value) {  // NOLINT
-  for (int i = 0; i < 32; i++) {
-    if ((i & 7) == 0) os << " ";
-    os << (((value & 1) == 0) ? "_" : "x");
-    value >>= 1;
-  }
-}
-
-
-void LayoutDescriptor::Print() {
-  OFStream os(stdout);
-  this->Print(os);
-  os << std::flush;
-}
-
-
-void LayoutDescriptor::Print(std::ostream& os) {  // NOLINT
-  os << "Layout descriptor: ";
-  if (IsUninitialized()) {
-    os << "<uninitialized>";
-  } else if (IsFastPointerLayout()) {
-    os << "<all tagged>";
-  } else if (IsSmi()) {
-    os << "fast";
-    PrintBitMask(os, static_cast<uint32_t>(Smi::cast(this)->value()));
-  } else {
-    os << "slow";
-    int len = length();
-    for (int i = 0; i < len; i++) {
-      if (i > 0) os << " |";
-      PrintBitMask(os, get_scalar(i));
-    }
-  }
-  os << "\n";
-}
-
-
 void TransitionArray::Print() {
   OFStream os(stdout);
   this->PrintTransitions(os);