commit 06ab2ec756e44eeaf7500b9794f9d2abc79dc8cf
author verwaest@chromium.org <verwaest@chromium.org@ce2b1a6d-e550-0410-aec6-3dcde31c8c00> Tue Oct 09 17:00:13 2012 +0000
committer verwaest@chromium.org <verwaest@chromium.org@ce2b1a6d-e550-0410-aec6-3dcde31c8c00> Tue Oct 09 17:00:13 2012 +0000
tree 5ca6a34528f71bcf45ee2b22c359a3a484028f53
parent 652f4fa54ed3db06c7223a3faa698e7b0a1d049f

Reapply descriptor array sharing.

This reverts commit 12669

Review URL: https://chromiumcodereview.appspot.com/11093026

git-svn-id: http://v8.googlecode.com/svn/trunk@12683 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

src/heap.cc

diff --git a/src/heap.cc b/src/heap.cc
index fc5fb36..bdb63bf 100644
--- a/src/heap.cc
+++ b/src/heap.cc
@@ -2052,7 +2052,9 @@
   reinterpret_cast<Map*>(result)->set_unused_property_fields(0);
   reinterpret_cast<Map*>(result)->set_bit_field(0);
   reinterpret_cast<Map*>(result)->set_bit_field2(0);
-  reinterpret_cast<Map*>(result)->set_bit_field3(0);
+  int bit_field3 = Map::EnumLengthBits::encode(Map::kInvalidEnumCache) |
+                   Map::OwnsDescriptors::encode(true);
+  reinterpret_cast<Map*>(result)->set_bit_field3(bit_field3);
   return result;
 }
 
@@ -2079,7 +2081,8 @@
   map->set_unused_property_fields(0);
   map->set_bit_field(0);
   map->set_bit_field2(1 << Map::kIsExtensible);
-  int bit_field3 = Map::EnumLengthBits::encode(Map::kInvalidEnumCache);
+  int bit_field3 = Map::EnumLengthBits::encode(Map::kInvalidEnumCache) |
+                   Map::OwnsDescriptors::encode(true);
   map->set_bit_field3(bit_field3);
   map->set_elements_kind(elements_kind);
 
@@ -7123,7 +7126,7 @@
 
 
 void DescriptorLookupCache::Clear() {
-  for (int index = 0; index < kLength; index++) keys_[index].array = NULL;
+  for (int index = 0; index < kLength; index++) keys_[index].source = NULL;
 }