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

src/x64/lithium-codegen-x64.cc

 // Copyright 2013 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "src/v8.h"
 
 #if V8_TARGET_ARCH_X64
 
 #include "src/base/bits.h"
 #include "src/code-factory.h"
@@ skipping 2872 matching lines @@
 
   __ Move(LoadDescriptor::NameRegister(), instr->name());
   EmitVectorLoadICRegisters<LLoadGlobalGeneric>(instr);
   Handle<Code> ic =
       CodeFactory::LoadICInOptimizedCode(isolate(), instr->typeof_mode(),
                                          SLOPPY, PREMONOMORPHIC).code();
   CallCode(ic, RelocInfo::CODE_TARGET, 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());
   __ movp(result, ContextOperand(context, instr->slot_index()));
   if (instr->hydrogen()->RequiresHoleCheck()) {
     __ CompareRoot(result, Heap::kTheHoleValueRootIndex);
     if (instr->hydrogen()->DeoptimizesOnHole()) {
       DeoptimizeIf(equal, instr, Deoptimizer::kHole);
     } else {
       Label is_not_hole;
@@ skipping 1332 matching lines @@
   }
 
   __ Move(StoreDescriptor::NameRegister(), instr->hydrogen()->name());
   Handle<Code> ic = CodeFactory::StoreICInOptimizedCode(
                         isolate(), instr->language_mode(),
                         instr->hydrogen()->initialization_state()).code();
   CallCode(ic, RelocInfo::CODE_TARGET, 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()));
   DCHECK(representation.IsSmiOrInteger32());
 
   Condition cc = instr->hydrogen()->allow_equality() ? below : below_equal;
   if (instr->length()->IsConstantOperand()) {
     int32_t length = ToInteger32(LConstantOperand::cast(instr->length()));
     Register index = ToRegister(instr->index());
     if (representation.IsSmi()) {
@@ skipping 1764 matching lines @@
   RecordSafepoint(Safepoint::kNoLazyDeopt);
 }
 
 
 #undef __
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_TARGET_ARCH_X64