[stubs] Port CreateAllocationSiteStub to Turbofan

src/code-stubs-hydrogen.cc

Index: src/code-stubs-hydrogen.cc
diff --git a/src/code-stubs-hydrogen.cc b/src/code-stubs-hydrogen.cc
index 3d0d281a44af822e7572af116d572e07a13067f6..19cdfb7d5c79e32e72948b625fc561a1ab22b8d8 100644
--- a/src/code-stubs-hydrogen.cc
+++ b/src/code-stubs-hydrogen.cc
@@ -544,85 +544,6 @@ Handle<Code> FastCloneShallowArrayStub::GenerateCode() {
 
 
 template <>
-HValue* CodeStubGraphBuilder<CreateAllocationSiteStub>::BuildCodeStub() {
-  // This stub is performance sensitive, the generated code must be tuned
-  // so that it doesn't build an eager frame.
-  info()->MarkMustNotHaveEagerFrame();
-
-  HValue* size = Add<HConstant>(AllocationSite::kSize);
-  HInstruction* object =
-      Add<HAllocate>(size, HType::JSObject(), TENURED, JS_OBJECT_TYPE,
-                     graph()->GetConstant0());
-
-  // Store the map
-  Handle<Map> allocation_site_map = isolate()->factory()->allocation_site_map();
-  AddStoreMapConstant(object, allocation_site_map);
-
-  // Store the payload (smi elements kind)
-  HValue* initial_elements_kind = Add<HConstant>(GetInitialFastElementsKind());
-  Add<HStoreNamedField>(object,
-                        HObjectAccess::ForAllocationSiteOffset(
-                            AllocationSite::kTransitionInfoOffset),
-                        initial_elements_kind);
-
-  // Unlike literals, constructed arrays don't have nested sites
-  Add<HStoreNamedField>(object,
-                        HObjectAccess::ForAllocationSiteOffset(
-                            AllocationSite::kNestedSiteOffset),
-                        graph()->GetConstant0());
-
-  // Pretenuring calculation field.
-  Add<HStoreNamedField>(object,
-                        HObjectAccess::ForAllocationSiteOffset(
-                            AllocationSite::kPretenureDataOffset),
-                        graph()->GetConstant0());
-
-  // Pretenuring memento creation count field.
-  Add<HStoreNamedField>(object,
-                        HObjectAccess::ForAllocationSiteOffset(
-                            AllocationSite::kPretenureCreateCountOffset),
-                        graph()->GetConstant0());
-
-  // Store an empty fixed array for the code dependency.
-  HConstant* empty_fixed_array =
-    Add<HConstant>(isolate()->factory()->empty_fixed_array());
-  Add<HStoreNamedField>(
-      object,
-      HObjectAccess::ForAllocationSiteOffset(
-          AllocationSite::kDependentCodeOffset),
-      empty_fixed_array);
-
-  // Link the object to the allocation site list
-  HValue* site_list = Add<HConstant>(
-      ExternalReference::allocation_sites_list_address(isolate()));
-  HValue* site = Add<HLoadNamedField>(site_list, nullptr,
-                                      HObjectAccess::ForAllocationSiteList());
-  // TODO(mvstanton): This is a store to a weak pointer, which we may want to
-  // mark as such in order to skip the write barrier, once we have a unified
-  // system for weakness. For now we decided to keep it like this because having
-  // an initial write barrier backed store makes this pointer strong until the
-  // next GC, and allocation sites are designed to survive several GCs anyway.
-  Add<HStoreNamedField>(
-      object,
-      HObjectAccess::ForAllocationSiteOffset(AllocationSite::kWeakNextOffset),
-      site);
-  Add<HStoreNamedField>(site_list, HObjectAccess::ForAllocationSiteList(),
-                        object);
-
-  HInstruction* feedback_vector = GetParameter(Descriptor::kVector);
-  HInstruction* slot = GetParameter(Descriptor::kSlot);
-  Add<HStoreKeyed>(feedback_vector, slot, object, nullptr, FAST_ELEMENTS,
-                   INITIALIZING_STORE);
-  return feedback_vector;
-}
-
-
-Handle<Code> CreateAllocationSiteStub::GenerateCode() {
-  return DoGenerateCode(this);
-}
-
-
-template <>
 HValue* CodeStubGraphBuilder<CreateWeakCellStub>::BuildCodeStub() {
   // This stub is performance sensitive, the generated code must be tuned
   // so that it doesn't build an eager frame.