[stubs] A new approach to TF stubs

src/interface-descriptors.cc

Index: src/interface-descriptors.cc
diff --git a/src/interface-descriptors.cc b/src/interface-descriptors.cc
index 815027ed4bed02ee4d2227b41308382aacf3213e..4d29e98a1007793f03928198785656181ebc082e 100644
--- a/src/interface-descriptors.cc
+++ b/src/interface-descriptors.cc
@@ -81,6 +81,12 @@ void AllocateMutableHeapNumberDescriptor::InitializePlatformSpecific(
 }
 
 
+void VoidDescriptor::InitializePlatformSpecific(
+    CallInterfaceDescriptorData* data) {
+  data->InitializePlatformSpecific(0, nullptr);
+}
+
+
 Type::FunctionType* LoadDescriptor::BuildCallInterfaceDescriptorFunctionType(
     Isolate* isolate, int paramater_count) {
   Zone* zone = isolate->interface_descriptor_zone();
@@ -92,6 +98,7 @@ Type::FunctionType* LoadDescriptor::BuildCallInterfaceDescriptorFunctionType(
   return function;
 }
 
+
 void LoadDescriptor::InitializePlatformSpecific(
     CallInterfaceDescriptorData* data) {
   Register registers[] = {ReceiverRegister(), NameRegister(), SlotRegister()};
@@ -546,32 +553,5 @@ ApiAccessorDescriptor::BuildCallInterfaceDescriptorFunctionType(
 }
 
 
-Type::FunctionType* MathRoundVariantCallFromUnoptimizedCodeDescriptor::
-    BuildCallInterfaceDescriptorFunctionType(Isolate* isolate,
-                                             int paramater_count) {
-  Zone* zone = isolate->interface_descriptor_zone();
-  Type::FunctionType* function =
-      Type::FunctionType::New(AnyTagged(zone), Type::Undefined(), 4, zone);
-  function->InitParameter(0, Type::Receiver());
-  function->InitParameter(1, SmiType(zone));
-  function->InitParameter(2, AnyTagged(zone));
-  function->InitParameter(3, AnyTagged(zone));
-  return function;
-}
-
-
-Type::FunctionType* MathRoundVariantCallFromOptimizedCodeDescriptor::
-    BuildCallInterfaceDescriptorFunctionType(Isolate* isolate,
-                                             int paramater_count) {
-  Zone* zone = isolate->interface_descriptor_zone();
-  Type::FunctionType* function =
-      Type::FunctionType::New(AnyTagged(zone), Type::Undefined(), 5, zone);
-  function->InitParameter(0, Type::Receiver());
-  function->InitParameter(1, SmiType(zone));
-  function->InitParameter(2, AnyTagged(zone));
-  function->InitParameter(3, AnyTagged(zone));
-  function->InitParameter(4, AnyTagged(zone));
-  return function;
-}
 }  // namespace internal
 }  // namespace v8