Provide baseline for new GC infrastructure.

src/objects-inl.h

 // Copyright 2010 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 780 matching lines @@
 #define WRITE_FIELD(p, offset, value) \
   (*reinterpret_cast<Object**>(FIELD_ADDR(p, offset)) = value)
 
 
 #define WRITE_BARRIER(object, offset) \
   Heap::RecordWrite(object->address(), offset);
 
 // CONDITIONAL_WRITE_BARRIER must be issued after the actual
 // write due to the assert validating the written value.
 #define CONDITIONAL_WRITE_BARRIER(object, offset, mode) \
-  if (mode == UPDATE_WRITE_BARRIER) { \
-    Heap::RecordWrite(object->address(), offset); \
-  } else { \
-    ASSERT(mode == SKIP_WRITE_BARRIER); \
-    ASSERT(Heap::InNewSpace(object) || \
-           !Heap::InNewSpace(READ_FIELD(object, offset)) || \
-           Page::FromAddress(object->address())->           \
-               IsRegionDirty(object->address() + offset));  \
+  if (!FLAG_new_gc) { \
+    if (mode == UPDATE_WRITE_BARRIER) { \
+      Heap::RecordWrite(object->address(), offset); \
+    } else { \
+      ASSERT(mode == SKIP_WRITE_BARRIER); \
+      ASSERT(Heap::InNewSpace(object) || \
+             !Heap::InNewSpace(READ_FIELD(object, offset)) || \
+             Page::FromAddress(object->address())->           \
+                 IsRegionDirty(object->address() + offset));  \
+    } \
   }
 
 #define READ_DOUBLE_FIELD(p, offset) \
   (*reinterpret_cast<double*>(FIELD_ADDR(p, offset)))
 
 #define WRITE_DOUBLE_FIELD(p, offset, value) \
   (*reinterpret_cast<double*>(FIELD_ADDR(p, offset)) = value)
 
 #define READ_INT_FIELD(p, offset) \
   (*reinterpret_cast<int*>(FIELD_ADDR(p, offset)))
@@ skipping 192 matching lines @@
   value_ |= kOverflowMask;
 }
 
 
 void MapWord::ClearOverflow() {
   value_ &= ~kOverflowMask;
 }
 
 
 MapWord MapWord::EncodeAddress(Address map_address, int offset) {
+  ASSERT(!FLAG_new_gc);
   // Offset is the distance in live bytes from the first live object in the
   // same page. The offset between two objects in the same page should not
   // exceed the object area size of a page.
   ASSERT(0 <= offset && offset < Page::kObjectAreaSize);
 
   uintptr_t compact_offset = offset >> kObjectAlignmentBits;
   ASSERT(compact_offset < (1 << kForwardingOffsetBits));
 
   Page* map_page = Page::FromAddress(map_address);
   ASSERT_MAP_PAGE_INDEX(map_page->mc_page_index);
@@ skipping 2821 matching lines @@
 #undef WRITE_INT_FIELD
 #undef READ_SHORT_FIELD
 #undef WRITE_SHORT_FIELD
 #undef READ_BYTE_FIELD
 #undef WRITE_BYTE_FIELD
 
 
 } }  // namespace v8::internal
 
 #endif  // V8_OBJECTS_INL_H_