Cardmarking writebarrier.

src/globals.h

Index: src/globals.h
diff --git a/src/globals.h b/src/globals.h
index 981ea16d722b7fe724e9e373cc16073cf21084d8..0f3b1ab22d318787a8c17fdc52b88a259cbe5179 100644
--- a/src/globals.h
+++ b/src/globals.h
@@ -285,7 +285,6 @@ class HeapObject;
 class IC;
 class InterceptorInfo;
 class IterationStatement;
-class Array;
 class JSArray;
 class JSFunction;
 class JSObject;
@@ -526,16 +525,16 @@ enum StateTag {
 #define HAS_FAILURE_TAG(value) \
   ((reinterpret_cast<intptr_t>(value) & kFailureTagMask) == kFailureTag)
 
-// OBJECT_SIZE_ALIGN returns the value aligned HeapObject size
-#define OBJECT_SIZE_ALIGN(value)                                \
+// OBJECT_POINTER_ALIGN returns the value aligned as a HeapObject pointer
+#define OBJECT_POINTER_ALIGN(value)                             \
   (((value) + kObjectAlignmentMask) & ~kObjectAlignmentMask)
 
 // POINTER_SIZE_ALIGN returns the value aligned as a pointer.
 #define POINTER_SIZE_ALIGN(value)                               \
   (((value) + kPointerAlignmentMask) & ~kPointerAlignmentMask)
 
-// MAP_SIZE_ALIGN returns the value aligned as a map pointer.
-#define MAP_SIZE_ALIGN(value)                               \
+// MAP_POINTER_ALIGN returns the value aligned as a map pointer.
+#define MAP_POINTER_ALIGN(value)                                \
   (((value) + kMapAlignmentMask) & ~kMapAlignmentMask)
 
 // The expression OFFSET_OF(type, field) computes the byte-offset