[turbofan] Slighly improve JSCreateArguments lowering.

src/runtime/runtime-scopes.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/runtime/runtime-utils.h"
 
 #include "src/accessors.h"
 #include "src/arguments.h"
 #include "src/ast/scopeinfo.h"
 #include "src/ast/scopes.h"
@@ skipping 562 matching lines @@
   return *result;
 }
 
 
 RUNTIME_FUNCTION(Runtime_NewSloppyArguments) {
   HandleScope scope(isolate);
   DCHECK(args.length() == 3);
   CONVERT_ARG_HANDLE_CHECKED(JSFunction, callee, 0);
   Object** parameters = reinterpret_cast<Object**>(args[1]);
   CONVERT_SMI_ARG_CHECKED(argument_count, 2);
-#ifdef DEBUG
-  // This runtime function does not materialize the correct arguments when the
-  // caller has been inlined, better make sure we are not hitting that case.
-  JavaScriptFrameIterator it(isolate);
-  DCHECK(!it.frame()->HasInlinedFrames());
-#endif  // DEBUG
   ParameterArguments argument_getter(parameters);
   return *NewSloppyArguments(isolate, callee, argument_getter, argument_count);
 }
 
 
 RUNTIME_FUNCTION(Runtime_NewClosure) {
   HandleScope scope(isolate);
   DCHECK_EQ(1, args.length());
   CONVERT_ARG_HANDLE_CHECKED(SharedFunctionInfo, shared, 0);
   Handle<Context> context(isolate->context(), isolate);
@@ skipping 441 matching lines @@
   DCHECK_EQ(2, args.length());
   CONVERT_ARG_HANDLE_CHECKED(String, name, 0);
   CONVERT_ARG_HANDLE_CHECKED(Object, value, 1);
   ASSIGN_RETURN_FAILURE_ON_EXCEPTION(isolate, value,
                                      StoreLookupSlot(name, value, STRICT));
   return *value;
 }
 
 }  // namespace internal
 }  // namespace v8