HydrogenCodeStubs consume stack arguments via descriptor.

src/ic/x64/handler-compiler-x64.cc

 // Copyright 2014 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"
 
 #if V8_TARGET_ARCH_X64
 
 #include "src/ic/call-optimization.h"
 #include "src/ic/handler-compiler.h"
@@ skipping 336 matching lines @@
     __ Move(this->name(), name);
   }
 }
 
 
 void NamedStoreHandlerCompiler::GenerateRestoreName(Handle<Name> name) {
   __ Move(this->name(), name);
 }
 
 
+void NamedStoreHandlerCompiler::GeneratePushMap(Register map_reg,
+                                                Register scratch) {
+  DCHECK(false);  // Not implemented.
+}
+
+
 void NamedStoreHandlerCompiler::GenerateRestoreMap(Handle<Map> transition,
+                                                   Register map_reg,
                                                    Register scratch,
                                                    Label* miss) {
   Handle<WeakCell> cell = Map::WeakCellForMap(transition);
-  Register map_reg = StoreTransitionDescriptor::MapRegister();
   DCHECK(!map_reg.is(scratch));
   __ LoadWeakValue(map_reg, cell, miss);
   if (transition->CanBeDeprecated()) {
     __ movl(scratch, FieldOperand(map_reg, Map::kBitField3Offset));
     __ andl(scratch, Immediate(Map::Deprecated::kMask));
     __ j(not_zero, miss);
   }
 }
 
 
@@ skipping 428 matching lines @@
   // Return the generated code.
   return GetCode(kind(), Code::NORMAL, name);
 }
 
 
 #undef __
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_TARGET_ARCH_X64