[stubs]: Implement ArrayNoArgumentConstructor as a TF stub

src/code-stubs.cc

Index: src/code-stubs.cc
diff --git a/src/code-stubs.cc b/src/code-stubs.cc
index 2a3a101818c2387c12bc37407d271463da1d834e..bd9142a0963f9b23d17c451fff9a9b6931b133c2 100644
--- a/src/code-stubs.cc
+++ b/src/code-stubs.cc
@@ -4250,6 +4250,21 @@ void ProfileEntryHookStub::EntryHookTrampoline(intptr_t function,
   entry_hook(function, stack_pointer);
 }
 
+void ArrayNoArgumentConstructorStub::GenerateAssembly(
+    CodeStubAssembler* assembler) const {
+  typedef compiler::Node Node;
+  Node* native_context = assembler->LoadObjectField(assembler->Parameter(0),

[mvstanton, 2016/05/02 12:40:08]

It would be better if the interface descriptor has a name for each index, like
kContext, kAllocationSite, kArgumentCount.

[danno, 2016/05/02 15:26:21]

Done.

+                                                    JSFunction::kContextOffset);
+  bool track_allocation_site =
+      AllocationSite::GetMode(elements_kind()) == TRACK_ALLOCATION_SITE &&
+      override_mode() != DISABLE_ALLOCATION_SITES;
+  Node* allocation_site =
+      track_allocation_site ? assembler->Parameter(1) : nullptr;
+  Node* array = assembler->AllocateJSArray(elements_kind(), native_context,
+                                           JSArray::kPreallocatedArrayElements,
+                                           0, allocation_site);
+  assembler->Return(array);
+}
 
 ArrayConstructorStub::ArrayConstructorStub(Isolate* isolate)
     : PlatformCodeStub(isolate) {