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

src/mips/lithium-codegen-mips.cc

 // Copyright 2012 the V8 project authors. All rights reserved.7
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 2877 matching lines @@
 
   __ li(LoadDescriptor::NameRegister(), Operand(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(cp));
+  DCHECK(ToRegister(instr->result()).is(v0));
+
+  __ li(LoadGlobalViaContextDescriptor::DepthRegister(),
+        Operand(Smi::FromInt(instr->depth())));
+  __ li(LoadGlobalViaContextDescriptor::SlotRegister(),
+        Operand(Smi::FromInt(instr->slot_index())));
+  __ li(LoadGlobalViaContextDescriptor::NameRegister(), Operand(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());
 
   __ lw(result, ContextOperand(context, instr->slot_index()));
   if (instr->hydrogen()->RequiresHoleCheck()) {
     __ LoadRoot(at, Heap::kTheHoleValueRootIndex);
 
     if (instr->hydrogen()->DeoptimizesOnHole()) {
       DeoptimizeIf(eq, instr, Deoptimizer::kHole, result, Operand(at));
@@ skipping 1273 matching lines @@
   }
 
   __ li(StoreDescriptor::NameRegister(), Operand(instr->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(cp));
+  DCHECK(ToRegister(instr->value())
+             .is(StoreGlobalViaContextDescriptor::ValueRegister()));
+
+  __ li(StoreGlobalViaContextDescriptor::DepthRegister(),
+        Operand(Smi::FromInt(instr->depth())));
+  __ li(StoreGlobalViaContextDescriptor::SlotRegister(),
+        Operand(Smi::FromInt(instr->slot_index())));
+  __ li(StoreGlobalViaContextDescriptor::NameRegister(),
+        Operand(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) {
   Condition cc = instr->hydrogen()->allow_equality() ? hi : hs;
   Operand operand(0);
   Register reg;
   if (instr->index()->IsConstantOperand()) {
     operand = ToOperand(instr->index());
     reg = ToRegister(instr->length());
     cc = CommuteCondition(cc);
   } else {
     reg = ToRegister(instr->index());
@@ skipping 1843 matching lines @@
   __ Push(at, ToRegister(instr->function()));
   CallRuntime(Runtime::kPushBlockContext, 2, instr);
   RecordSafepoint(Safepoint::kNoLazyDeopt);
 }
 
 
 #undef __
 
 }  // namespace internal
 }  // namespace v8