Crankshaft part of the 'loads and stores to global vars through property cell shortcuts' feature.

src/x64/lithium-codegen-x64.cc

Index: src/x64/lithium-codegen-x64.cc
diff --git a/src/x64/lithium-codegen-x64.cc b/src/x64/lithium-codegen-x64.cc
index b45917e82ffda33a5ead6a9af4774f8105f7ee7e..6305dc7587db4bfb3cc3afa0fce6435b7e126faf 100644
--- a/src/x64/lithium-codegen-x64.cc
+++ b/src/x64/lithium-codegen-x64.cc
@@ -2890,6 +2890,22 @@ void LCodeGen::DoLoadGlobalGeneric(LLoadGlobalGeneric* instr) {
 }
 
 
+void LCodeGen::DoLoadGlobalViaContext(LLoadGlobalViaContext* instr) {
+  DCHECK(ToRegister(instr->context()).is(rsi));
+  DCHECK(ToRegister(instr->result()).is(rax));
+
+  __ Move(LoadGlobalViaContextDescriptor::DepthRegister(),
+          Smi::FromInt(instr->depth()));
+  __ Move(LoadGlobalViaContextDescriptor::SlotRegister(),
+          Smi::FromInt(instr->slot_index()));
+  __ Move(LoadGlobalViaContextDescriptor::NameRegister(), instr->name());
+
+  Handle<Code> stub =
+      CodeFactory::LoadGlobalViaContext(isolate(), instr->depth()).code();
+  CallCode(stub, RelocInfo::CODE_TARGET, instr);
+}
+
+
 void LCodeGen::DoLoadContextSlot(LLoadContextSlot* instr) {
   Register context = ToRegister(instr->context());
   Register result = ToRegister(instr->result());
@@ -4242,6 +4258,24 @@ void LCodeGen::DoStoreNamedGeneric(LStoreNamedGeneric* instr) {
 }
 
 
+void LCodeGen::DoStoreGlobalViaContext(LStoreGlobalViaContext* instr) {
+  DCHECK(ToRegister(instr->context()).is(rsi));
+  DCHECK(ToRegister(instr->value())
+             .is(StoreGlobalViaContextDescriptor::ValueRegister()));
+
+  __ Move(StoreGlobalViaContextDescriptor::DepthRegister(),
+          Smi::FromInt(instr->depth()));
+  __ Move(StoreGlobalViaContextDescriptor::SlotRegister(),
+          Smi::FromInt(instr->slot_index()));
+  __ Move(StoreGlobalViaContextDescriptor::NameRegister(), instr->name());
+
+  Handle<Code> stub =
+      CodeFactory::StoreGlobalViaContext(isolate(), instr->depth(),
+                                         instr->language_mode()).code();
+  CallCode(stub, RelocInfo::CODE_TARGET, instr);
+}
+
+
 void LCodeGen::DoBoundsCheck(LBoundsCheck* instr) {
   Representation representation = instr->hydrogen()->length()->representation();
   DCHECK(representation.Equals(instr->hydrogen()->index()->representation()));