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Unified Diff: src/heap.cc

Issue 10692026: Moving prototype transitions into the header of the transition array. (Closed) Base URL: https://v8.googlecode.com/svn/branches/bleeding_edge
Patch Set: Addressing comments Created 8 years, 5 months ago
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Index: src/heap.cc
diff --git a/src/heap.cc b/src/heap.cc
index 7d655b4c35a2f6de9987c5645d5c20de6d0dfff0..ac9b2a067843719809fa74d392d8bfbdc314989b 100644
--- a/src/heap.cc
+++ b/src/heap.cc
@@ -2082,7 +2082,7 @@ MaybeObject* Heap::AllocateMap(InstanceType instance_type,
map->set_pre_allocated_property_fields(0);
map->init_instance_descriptors();
map->set_code_cache(empty_fixed_array(), SKIP_WRITE_BARRIER);
- map->init_prototype_transitions(undefined_value());
+ map->init_back_pointer(undefined_value());
map->set_unused_property_fields(0);
map->set_bit_field(0);
map->set_bit_field2(1 << Map::kIsExtensible);
@@ -2221,15 +2221,15 @@ bool Heap::CreateInitialMaps() {
// Fix the instance_descriptors for the existing maps.
meta_map()->init_instance_descriptors();
meta_map()->set_code_cache(empty_fixed_array());
- meta_map()->init_prototype_transitions(undefined_value());
+ meta_map()->init_back_pointer(undefined_value());
fixed_array_map()->init_instance_descriptors();
fixed_array_map()->set_code_cache(empty_fixed_array());
- fixed_array_map()->init_prototype_transitions(undefined_value());
+ fixed_array_map()->init_back_pointer(undefined_value());
oddball_map()->init_instance_descriptors();
oddball_map()->set_code_cache(empty_fixed_array());
- oddball_map()->init_prototype_transitions(undefined_value());
+ oddball_map()->init_back_pointer(undefined_value());
// Fix prototype object for existing maps.
meta_map()->set_prototype(null_value());
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