HydrogenCodeStubs consume stack arguments via descriptor.

src/mips64/interface-descriptors-mips64.cc

Index: src/mips64/interface-descriptors-mips64.cc
diff --git a/src/mips64/interface-descriptors-mips64.cc b/src/mips64/interface-descriptors-mips64.cc
index cb722a5b4d2384cf42a27dd6b5e96026cbf0e424..b0f28d15dc82df874684142e954fc2a34ef0ef38 100644
--- a/src/mips64/interface-descriptors-mips64.cc
+++ b/src/mips64/interface-descriptors-mips64.cc
@@ -70,6 +70,14 @@ const Register GrowArrayElementsDescriptor::ObjectRegister() { return a0; }
 const Register GrowArrayElementsDescriptor::KeyRegister() { return a3; }
 
 
+void StoreTransitionDescriptor::InitializePlatformSpecific(
+    CallInterfaceDescriptorData* data) {
+  Register registers[] = {ReceiverRegister(), NameRegister(), ValueRegister(),
+                          MapRegister()};
+  data->InitializePlatformSpecific(arraysize(registers), registers);
+}
+
+
 void FastNewClosureDescriptor::InitializePlatformSpecific(
     CallInterfaceDescriptorData* data) {
   Register registers[] = {a2};