Revert "Merge old data and pointer space."

src/assembler.cc

Index: src/assembler.cc
diff --git a/src/assembler.cc b/src/assembler.cc
index d3f541a33f10db64ddfd389066f5a9b7503b7524..b6e52aebdf28c032d039e7046755c8ca0886da43 100644
--- a/src/assembler.cc
+++ b/src/assembler.cc
@@ -1216,15 +1216,30 @@ ExternalReference ExternalReference::new_space_allocation_limit_address(
 }
 
 
-ExternalReference ExternalReference::old_space_allocation_top_address(
+ExternalReference ExternalReference::old_pointer_space_allocation_top_address(
     Isolate* isolate) {
-  return ExternalReference(isolate->heap()->OldSpaceAllocationTopAddress());
+  return ExternalReference(
+      isolate->heap()->OldPointerSpaceAllocationTopAddress());
+}
+
+
+ExternalReference ExternalReference::old_pointer_space_allocation_limit_address(
+    Isolate* isolate) {
+  return ExternalReference(
+      isolate->heap()->OldPointerSpaceAllocationLimitAddress());
 }
 
 
-ExternalReference ExternalReference::old_space_allocation_limit_address(
+ExternalReference ExternalReference::old_data_space_allocation_top_address(
     Isolate* isolate) {
-  return ExternalReference(isolate->heap()->OldSpaceAllocationLimitAddress());
+  return ExternalReference(isolate->heap()->OldDataSpaceAllocationTopAddress());
+}
+
+
+ExternalReference ExternalReference::old_data_space_allocation_limit_address(
+    Isolate* isolate) {
+  return ExternalReference(
+      isolate->heap()->OldDataSpaceAllocationLimitAddress());
 }