[ic] Extract load IC proto array handlers handling to a separate stub.

src/interface-descriptors.cc

Index: src/interface-descriptors.cc
diff --git a/src/interface-descriptors.cc b/src/interface-descriptors.cc
index 2d8ff10258063376db8f6587815b764c9435dc72..d14b1a101128c8a3f075643af0963eca937de2fc 100644
--- a/src/interface-descriptors.cc
+++ b/src/interface-descriptors.cc
@@ -217,7 +217,6 @@ void LoadWithVectorDescriptor::InitializePlatformIndependent(
                                       machine_types);
 }
 
-
 void LoadWithVectorDescriptor::InitializePlatformSpecific(
     CallInterfaceDescriptorData* data) {
   Register registers[] = {ReceiverRegister(), NameRegister(), SlotRegister(),
@@ -225,6 +224,24 @@ void LoadWithVectorDescriptor::InitializePlatformSpecific(
   data->InitializePlatformSpecific(arraysize(registers), registers);
 }
 
+void LoadICProtoArrayDescriptor::InitializePlatformIndependent(
+    CallInterfaceDescriptorData* data) {
+  // kReceiver, kName, kSlot, kVector, kHandler
+  MachineType machine_types[] = {
+      MachineType::AnyTagged(), MachineType::AnyTagged(),
+      MachineType::TaggedSigned(), MachineType::AnyTagged(),
+      MachineType::AnyTagged()};
+  data->InitializePlatformIndependent(arraysize(machine_types), 0,
+                                      machine_types);
+}
+
+void LoadICProtoArrayDescriptor::InitializePlatformSpecific(
+    CallInterfaceDescriptorData* data) {
+  Register registers[] = {ReceiverRegister(), NameRegister(), SlotRegister(),
+                          VectorRegister(), HandlerRegister()};
+  data->InitializePlatformSpecific(arraysize(registers), registers);
+}
+
 void StoreWithVectorDescriptor::InitializePlatformIndependent(
     CallInterfaceDescriptorData* data) {
   // kReceiver, kName, kValue, kSlot, kVector