Reland "Merge old data and pointer space."

src/mips64/macro-assembler-mips64.h

Index: src/mips64/macro-assembler-mips64.h
diff --git a/src/mips64/macro-assembler-mips64.h b/src/mips64/macro-assembler-mips64.h
index e169e0c23b5bdd9769312efa06481000ab738b5d..7d8f2fb18493537429a6b0d2fb194cf1ff5d3ca5 100644
--- a/src/mips64/macro-assembler-mips64.h
+++ b/src/mips64/macro-assembler-mips64.h
@@ -509,7 +509,7 @@ class MacroAssembler: public Assembler {
   // ---------------------------------------------------------------------------
   // Allocation support.
 
-  // Allocate an object in new space or old pointer space. The object_size is
+  // Allocate an object in new space or old space. The object_size is
   // specified either in bytes or in words if the allocation flag SIZE_IN_WORDS
   // is passed. If the space is exhausted control continues at the gc_required
   // label. The allocated object is returned in result. If the flag