Revert "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 c001ac0a3d28b5247da18566e7abd96f6f57d146..3c1c2b0a50346e5071af8723cbdd54285385ce65 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 space. The object_size is
+  // Allocate an object in new space or old pointer 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