[stubs] Unify the type conversion call interface descriptors.

src/x64/interface-descriptors-x64.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.
 
 #if V8_TARGET_ARCH_X64
 
 #include "src/interface-descriptors.h"
 
 namespace v8 {
 namespace internal {
@@ skipping 96 matching lines @@
 }
 
 
 void TypeofDescriptor::InitializePlatformSpecific(
     CallInterfaceDescriptorData* data) {
   Register registers[] = {rbx};
   data->InitializePlatformSpecific(arraysize(registers), registers);
 }
 
 
-void ToNumberDescriptor::InitializePlatformSpecific(
-    CallInterfaceDescriptorData* data) {
-  // ToNumberStub invokes a function, and therefore needs a context.
-  Register registers[] = {rax};
-  data->InitializePlatformSpecific(arraysize(registers), registers);
-}
-
-
 // static
-const Register ToLengthDescriptor::ReceiverRegister() { return rax; }
-
-
-// static
-const Register ToStringDescriptor::ReceiverRegister() { return rax; }
-
-
-// static
-const Register ToNameDescriptor::ReceiverRegister() { return rax; }
-
-
-// static
-const Register ToObjectDescriptor::ReceiverRegister() { return rax; }
-
-
-void NumberToStringDescriptor::InitializePlatformSpecific(
-    CallInterfaceDescriptorData* data) {
-  Register registers[] = {rax};
-  data->InitializePlatformSpecific(arraysize(registers), registers);
-}
-
+const Register TypeConversionDescriptor::ArgumentRegister() { return rax; }
 
 void FastCloneRegExpDescriptor::InitializePlatformSpecific(
     CallInterfaceDescriptorData* data) {
   Register registers[] = {rdi, rax, rcx, rdx};
   data->InitializePlatformSpecific(arraysize(registers), registers);
 }
 
 
 void FastCloneShallowArrayDescriptor::InitializePlatformSpecific(
     CallInterfaceDescriptorData* data) {
@@ skipping 151 matching lines @@
 }
 
 
 void CompareDescriptor::InitializePlatformSpecific(
     CallInterfaceDescriptorData* data) {
   Register registers[] = {rdx, rax};
   data->InitializePlatformSpecific(arraysize(registers), registers);
 }
 
 
-void ToBooleanDescriptor::InitializePlatformSpecific(
-    CallInterfaceDescriptorData* data) {
-  Register registers[] = {rax};
-  data->InitializePlatformSpecific(arraysize(registers), registers);
-}
-
-
 void BinaryOpDescriptor::InitializePlatformSpecific(
     CallInterfaceDescriptorData* data) {
   Register registers[] = {rdx, rax};
   data->InitializePlatformSpecific(arraysize(registers), registers);
 }
 
 
 void BinaryOpWithAllocationSiteDescriptor::InitializePlatformSpecific(
     CallInterfaceDescriptorData* data) {
   Register registers[] = {rcx, rdx, rax};
@@ skipping 94 matching lines @@
       r15,  // address of first argument (argv)
       rbx   // the runtime function to call
   };
   data->InitializePlatformSpecific(arraysize(registers), registers);
 }
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_TARGET_ARCH_X64