Array constructor can be simplified by loading context from JSFunction.

src/x64/code-stubs-x64.cc

Index: src/x64/code-stubs-x64.cc
diff --git a/src/x64/code-stubs-x64.cc b/src/x64/code-stubs-x64.cc
index ff13be3c72e2bf8ac2b43dca82d0057fb905587c..fef72606f6e349a9c09afde340ea52141e7167dd 100644
--- a/src/x64/code-stubs-x64.cc
+++ b/src/x64/code-stubs-x64.cc
@@ -5208,9 +5208,7 @@ template<class T>
 static void CreateArrayDispatch(MacroAssembler* masm,
                                 AllocationSiteOverrideMode mode) {
   if (mode == DISABLE_ALLOCATION_SITES) {
-    T stub(GetInitialFastElementsKind(),
-           CONTEXT_CHECK_REQUIRED,
-           mode);
+    T stub(GetInitialFastElementsKind(), mode);
     __ TailCallStub(&stub);
   } else if (mode == DONT_OVERRIDE) {
     int last_index = GetSequenceIndexFromFastElementsKind(
@@ -5270,13 +5268,11 @@ static void CreateArrayDispatchOneArgument(MacroAssembler* masm,
     ElementsKind holey_initial = GetHoleyElementsKind(initial);
 
     ArraySingleArgumentConstructorStub stub_holey(holey_initial,
-                                                  CONTEXT_CHECK_REQUIRED,
                                                   DISABLE_ALLOCATION_SITES);
     __ TailCallStub(&stub_holey);
 
     __ bind(&normal_sequence);
     ArraySingleArgumentConstructorStub stub(initial,
-                                            CONTEXT_CHECK_REQUIRED,
                                             DISABLE_ALLOCATION_SITES);
     __ TailCallStub(&stub);
   } else if (mode == DONT_OVERRIDE) {
@@ -5328,7 +5324,7 @@ static void ArrayConstructorStubAheadOfTimeHelper(Isolate* isolate) {
     T stub(kind);
     stub.GetCode(isolate);
     if (AllocationSite::GetMode(kind) != DONT_TRACK_ALLOCATION_SITE) {
-      T stub1(kind, CONTEXT_CHECK_REQUIRED, DISABLE_ALLOCATION_SITES);
+      T stub1(kind, DISABLE_ALLOCATION_SITES);
       stub1.GetCode(isolate);
     }
   }