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

src/mips/lithium-codegen-mips.cc

Index: src/mips/lithium-codegen-mips.cc
diff --git a/src/mips/lithium-codegen-mips.cc b/src/mips/lithium-codegen-mips.cc
index 9d004ca7a00c3812e68b92e0d5712268962a03e8..2703bdbe1999c9dc6df06eff856571e805f02615 100644
--- a/src/mips/lithium-codegen-mips.cc
+++ b/src/mips/lithium-codegen-mips.cc
@@ -2895,6 +2895,22 @@ void LCodeGen::DoLoadGlobalGeneric(LLoadGlobalGeneric* 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());
@@ -4188,6 +4204,25 @@ void LCodeGen::DoStoreNamedGeneric(LStoreNamedGeneric* 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);