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Unified Diff: src/heap.cc

Issue 11575007: Make embedded maps in optimized code weak. (Closed) Base URL: https://v8.googlecode.com/svn/branches/bleeding_edge
Patch Set: Created 7 years, 11 months ago
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Index: src/heap.cc
diff --git a/src/heap.cc b/src/heap.cc
index 5edaa355bbfa61abe675171a4c22d7b3d67d181d..19c5193e23f1a414e2c71674f2d397a21fcee15c 100644
--- a/src/heap.cc
+++ b/src/heap.cc
@@ -2197,6 +2197,8 @@ MaybeObject* Heap::AllocateMap(InstanceType instance_type,
map->set_inobject_properties(0);
map->set_pre_allocated_property_fields(0);
map->set_code_cache(empty_fixed_array(), SKIP_WRITE_BARRIER);
+ map->set_dependent_codes(DependentCodes::cast(empty_fixed_array()),
+ SKIP_WRITE_BARRIER);
map->init_back_pointer(undefined_value());
map->set_unused_property_fields(0);
map->set_instance_descriptors(empty_descriptor_array());
@@ -2332,14 +2334,18 @@ bool Heap::CreateInitialMaps() {
// Fix the instance_descriptors for the existing maps.
meta_map()->set_code_cache(empty_fixed_array());
+ meta_map()->set_dependent_codes(DependentCodes::cast(empty_fixed_array()));
meta_map()->init_back_pointer(undefined_value());
meta_map()->set_instance_descriptors(empty_descriptor_array());
fixed_array_map()->set_code_cache(empty_fixed_array());
+ fixed_array_map()->set_dependent_codes(
+ DependentCodes::cast(empty_fixed_array()));
fixed_array_map()->init_back_pointer(undefined_value());
fixed_array_map()->set_instance_descriptors(empty_descriptor_array());
oddball_map()->set_code_cache(empty_fixed_array());
+ oddball_map()->set_dependent_codes(DependentCodes::cast(empty_fixed_array()));
oddball_map()->init_back_pointer(undefined_value());
oddball_map()->set_instance_descriptors(empty_descriptor_array());
@@ -3788,6 +3794,9 @@ MaybeObject* Heap::CreateCode(const CodeDesc& desc,
code->set_gc_metadata(Smi::FromInt(0));
code->set_ic_age(global_ic_age_);
code->set_prologue_offset(kPrologueOffsetNotSet);
+ if (code->kind() == Code::OPTIMIZED_FUNCTION) {
+ code->set_marked_for_deoptimization(false);
+ }
// Allow self references to created code object by patching the handle to
// point to the newly allocated Code object.
if (!self_reference.is_null()) {
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