Reland: Add unoptimized/optimized variants of MathFloor TF code stub

src/interface-descriptors.cc

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "src/v8.h"
 
 #include "src/interface-descriptors.h"
 
 namespace v8 {
 namespace internal {
@@ skipping 341 matching lines @@
   Type::FunctionType* function = Type::FunctionType::New(
       AnyTagged(), Type::Undefined(), 4, isolate->interface_descriptor_zone());
   function->InitParameter(0, AnyTagged());        // callee
   function->InitParameter(1, AnyTagged());        // call_data
   function->InitParameter(2, AnyTagged());        // holder
   function->InitParameter(3, ExternalPointer());  // api_function_address
   return function;
 }
 
 
-Type::FunctionType*
-MathRoundVariantDescriptor::BuildCallInterfaceDescriptorFunctionType(
-    Isolate* isolate, int paramater_count) {
+Type::FunctionType* MathRoundVariantCallFromUnoptimizedCodeDescriptor::
+    BuildCallInterfaceDescriptorFunctionType(Isolate* isolate,
+                                             int paramater_count) {
   Type::FunctionType* function = Type::FunctionType::New(
-      AnyTagged(), Type::Undefined(), 2, isolate->interface_descriptor_zone());
-  function->InitParameter(0, SmiType());
-  function->InitParameter(1, AnyTagged());
+      AnyTagged(), Type::Undefined(), 4, isolate->interface_descriptor_zone());
+  function->InitParameter(0, Type::Receiver());
+  function->InitParameter(1, SmiType());
+  function->InitParameter(2, AnyTagged());
+  function->InitParameter(3, AnyTagged());
   return function;
 }
 
 
+Type::FunctionType* MathRoundVariantCallFromOptimizedCodeDescriptor::
+    BuildCallInterfaceDescriptorFunctionType(Isolate* isolate,
+                                             int paramater_count) {
+  Type::FunctionType* function = Type::FunctionType::New(
+      AnyTagged(), Type::Undefined(), 5, isolate->interface_descriptor_zone());
+  function->InitParameter(0, Type::Receiver());
+  function->InitParameter(1, SmiType());
+  function->InitParameter(2, AnyTagged());
+  function->InitParameter(3, AnyTagged());
+  function->InitParameter(4, AnyTagged());
+  return function;
+}
 }  // namespace internal
 }  // namespace v8