[stubs] Unify (and optimize) implementation of ToObject.

src/x64/code-stubs-x64.cc

 // Copyright 2013 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/bootstrapper.h"
 #include "src/code-stubs.h"
@@ skipping 1946 matching lines @@
   __ Jump(adaptor, RelocInfo::CODE_TARGET);
 }
 
 
 static void EmitWrapCase(MacroAssembler* masm,
                          StackArgumentsAccessor* args,
                          Label* cont) {
   // Wrap the receiver and patch it back onto the stack.
   { FrameScope frame_scope(masm, StackFrame::INTERNAL);
     __ Push(rdi);
-    __ Push(rax);
-    __ InvokeBuiltin(Builtins::TO_OBJECT, CALL_FUNCTION);
+    ToObjectStub stub(masm->isolate());
+    __ CallStub(&stub);
     __ Pop(rdi);
   }
   __ movp(args->GetReceiverOperand(), rax);
   __ jmp(cont);
 }
 
 
 static void CallFunctionNoFeedback(MacroAssembler* masm,
                                    int argc, bool needs_checks,
                                    bool call_as_method) {
@@ skipping 3604 matching lines @@
                            kStackSpace, nullptr, return_value_operand, NULL);
 }
 
 
 #undef __
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_TARGET_ARCH_X64