commit 81cac2ba397bd57f2967c8b4b677bef08a869991
author danno@chromium.org <danno@chromium.org@ce2b1a6d-e550-0410-aec6-3dcde31c8c00> Tue Jul 10 11:28:27 2012 +0000
committer danno@chromium.org <danno@chromium.org@ce2b1a6d-e550-0410-aec6-3dcde31c8c00> Tue Jul 10 11:28:27 2012 +0000
tree 04d9ed53a20c08743fe08c1f3232d2cc64f6025e
parent 99aa490225c81012235659d9a183226b286178c8

Version 3.12.10

Re-enabled and fixed issue with array bounds check elimination (Chromium issue 132114).

Fixed Debug::Break crash. (Chromium issue 131642)

Added optimizing compiler support for JavaScript getters.

Performance and stability improvements on all platforms.

git-svn-id: http://v8.googlecode.com/svn/trunk@12029 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

src/heap.cc

diff --git a/src/heap.cc b/src/heap.cc
index 7d655b4..1b4ec81 100644
--- a/src/heap.cc
+++ b/src/heap.cc
@@ -2082,7 +2082,7 @@
   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 @@
   // 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());
@@ -4006,13 +4006,18 @@
 }
 
 
-MaybeObject* Heap::AllocateJSModule() {
+MaybeObject* Heap::AllocateJSModule(Context* context, ScopeInfo* scope_info) {
   // Allocate a fresh map. Modules do not have a prototype.
   Map* map;
   MaybeObject* maybe_map = AllocateMap(JS_MODULE_TYPE, JSModule::kSize);
   if (!maybe_map->To(&map)) return maybe_map;
   // Allocate the object based on the map.
-  return AllocateJSObjectFromMap(map, TENURED);
+  JSModule* module;
+  MaybeObject* maybe_module = AllocateJSObjectFromMap(map, TENURED);
+  if (!maybe_module->To(&module)) return maybe_module;
+  module->set_context(context);
+  module->set_scope_info(scope_info);
+  return module;
 }
 
 
@@ -4911,18 +4916,16 @@
 }
 
 
-MaybeObject* Heap::AllocateModuleContext(Context* previous,
-                                         ScopeInfo* scope_info) {
+MaybeObject* Heap::AllocateModuleContext(ScopeInfo* scope_info) {
   Object* result;
   { MaybeObject* maybe_result =
-        AllocateFixedArrayWithHoles(scope_info->ContextLength(), TENURED);
+        AllocateFixedArray(scope_info->ContextLength(), TENURED);
     if (!maybe_result->ToObject(&result)) return maybe_result;
   }
   Context* context = reinterpret_cast<Context*>(result);
   context->set_map_no_write_barrier(module_context_map());
-  context->set_previous(previous);
-  context->set_extension(scope_info);
-  context->set_global(previous->global());
+  // Context links will be set later.
+  context->set_extension(Smi::FromInt(0));
   return context;
 }
 
@@ -4937,7 +4940,7 @@
   context->set_map_no_write_barrier(function_context_map());
   context->set_closure(function);
   context->set_previous(function->context());
-  context->set_extension(NULL);
+  context->set_extension(Smi::FromInt(0));
   context->set_global(function->context()->global());
   return context;
 }