[stubs] Unify the type conversion call interface descriptors.

src/code-stubs-hydrogen.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/code-stubs.h"
 
 #include "src/bailout-reason.h"
 #include "src/crankshaft/hydrogen.h"
 #include "src/crankshaft/lithium.h"
 #include "src/field-index.h"
@@ skipping 1515 matching lines @@
         // The input is already a primitive.
         Push(input);
       }
       if_inputisprimitive.Else();
       {
         // Convert the input to a primitive.
         Push(BuildToPrimitive(input, input_map));
       }
       if_inputisprimitive.End();
       // Convert the primitive to a string value.
-      ToStringDescriptor descriptor(isolate());
       ToStringStub stub(isolate());
       HValue* values[] = {context(), Pop()};
       Push(AddUncasted<HCallWithDescriptor>(
-          Add<HConstant>(stub.GetCode()), 0, descriptor,
+          Add<HConstant>(stub.GetCode()), 0, stub.GetCallInterfaceDescriptor(),
           Vector<HValue*>(values, arraysize(values))));
     }
     if_inputisstring.End();
   }
   if_inputissmi.End();
   return Pop();
 }
 
 
 HValue* CodeStubGraphBuilderBase::BuildToPrimitive(HValue* input,
@@ skipping 237 matching lines @@
 }
 
 
 Handle<Code> ElementsTransitionAndStoreStub::GenerateCode() {
   return DoGenerateCode(this);
 }
 
 
 template <>
 HValue* CodeStubGraphBuilder<ToObjectStub>::BuildCodeStub() {
-  HValue* receiver = GetParameter(ToObjectDescriptor::kReceiverIndex);
+  HValue* receiver = GetParameter(TypeConversionDescriptor::kArgumentIndex);
   return BuildToObject(receiver);
 }
 
 
 Handle<Code> ToObjectStub::GenerateCode() { return DoGenerateCode(this); }
 
 
 void CodeStubGraphBuilderBase::BuildCheckAndInstallOptimizedCode(
     HValue* js_function,
     HValue* native_context,
@@ skipping 555 matching lines @@
   return Pop();
 }
 
 
 Handle<Code> KeyedLoadGenericStub::GenerateCode() {
   return DoGenerateCode(this);
 }
 
 }  // namespace internal
 }  // namespace v8