[stubs] Remove %_NewObject intrinsic

src/crankshaft/hydrogen.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/crankshaft/hydrogen.h"
 
 #include <memory>
 #include <sstream>
 
 #include "src/allocation-site-scopes.h"
@@ skipping 12083 matching lines @@
   HValue* to = Pop();
   HValue* from = Pop();
   HValue* string = Pop();
   HValue* values[] = {string, from, to};
   HInstruction* result = New<HCallWithDescriptor>(
       stub, 0, callable.descriptor(), ArrayVector(values));
   result->set_type(HType::String());
   return ast_context()->ReturnInstruction(result, call->id());
 }
 
-// Support for direct creation of new objects.
-void HOptimizedGraphBuilder::GenerateNewObject(CallRuntime* call) {
-  DCHECK_EQ(2, call->arguments()->length());
-  CHECK_ALIVE(VisitExpressions(call->arguments()));
-  FastNewObjectStub stub(isolate());
-  FastNewObjectDescriptor descriptor(isolate());
-  HValue* values[] = {Pop(), Pop()};
-  HConstant* stub_value = Add<HConstant>(stub.GetCode());
-  HInstruction* result =
-      New<HCallWithDescriptor>(stub_value, 0, descriptor, ArrayVector(values));
-  return ast_context()->ReturnInstruction(result, call->id());
-}
-
 // Support for direct calls from JavaScript to native RegExp code.
 void HOptimizedGraphBuilder::GenerateRegExpExec(CallRuntime* call) {
   DCHECK_EQ(4, call->arguments()->length());
   CHECK_ALIVE(VisitExpressions(call->arguments()));
   Callable callable = CodeFactory::RegExpExec(isolate());
   HValue* last_match_info = Pop();
   HValue* index = Pop();
   HValue* subject = Pop();
   HValue* regexp_object = Pop();
   HValue* stub = Add<HConstant>(callable.code());
@@ skipping 884 matching lines @@
     isolate()->GetHTracer()->TraceHydrogen(name(), graph_);
   }
 
 #ifdef DEBUG
   graph_->Verify(false);  // No full verify.
 #endif
 }
 
 }  // namespace internal
 }  // namespace v8