A64: Synchronize with r18581.

src/x64/ic-x64.cc

Index: src/x64/ic-x64.cc
diff --git a/src/x64/ic-x64.cc b/src/x64/ic-x64.cc
index 9448d3771a7dad634b8a8e4d466351542d038568..cea2b80cf0e3e2d5667d25d69ab4bad1800f8109 100644
--- a/src/x64/ic-x64.cc
+++ b/src/x64/ic-x64.cc
@@ -998,7 +998,7 @@ void CallICBase::GenerateMiss(MacroAssembler* masm,
 
     // Patch the receiver on the stack.
     __ bind(&global);
-    __ movq(rdx, FieldOperand(rdx, GlobalObject::kGlobalReceiverOffset));
+    __ LoadRoot(rdx, Heap::kUndefinedValueRootIndex);
     __ movq(args.GetReceiverOperand(), rdx);
     __ bind(&invoke);
   }
@@ -1345,7 +1345,7 @@ void KeyedCallIC::GenerateNonStrictArguments(MacroAssembler* masm,
 }
 
 
-void LoadIC::GenerateMegamorphic(MacroAssembler* masm) {
+void LoadIC::GenerateMegamorphic(MacroAssembler* masm, ContextualMode mode) {
   // ----------- S t a t e -------------
   //  -- rax    : receiver
   //  -- rcx    : name
@@ -1353,8 +1353,9 @@ void LoadIC::GenerateMegamorphic(MacroAssembler* masm) {
   // -----------------------------------
 
   // Probe the stub cache.
+  ExtraICState extra_ic_state = IC::ComputeExtraICState(mode);
   Code::Flags flags = Code::ComputeFlags(
-      Code::HANDLER, MONOMORPHIC, kNoExtraICState,
+      Code::HANDLER, MONOMORPHIC, extra_ic_state,
       Code::NORMAL, Code::LOAD_IC);
   masm->isolate()->stub_cache()->GenerateProbe(
       masm, flags, rax, rcx, rbx, rdx);