[stubs] Extract ToInteger to CodeStubAssembler

src/builtins/builtins-string.cc

 // Copyright 2016 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/builtins/builtins.h"
 #include "src/builtins/builtins-utils.h"
 
 #include "src/code-factory.h"
 
 namespace v8 {
@@ skipping 300 matching lines @@
     // Check if the {position} is already a Smi.
     Variable var_position(assembler, MachineRepresentation::kTagged);
     var_position.Bind(position);
     Label if_positionissmi(assembler),
         if_positionisnotsmi(assembler, Label::kDeferred);
     assembler->Branch(assembler->WordIsSmi(position), &if_positionissmi,
                       &if_positionisnotsmi);
     assembler->Bind(&if_positionisnotsmi);
     {
       // Convert the {position} to an Integer via the ToIntegerStub.
-      Callable callable = CodeFactory::ToInteger(assembler->isolate());
-      Node* index = assembler->CallStub(callable, context, position);
+      Node* index = assembler->ToInteger(context, position);
 
       // Check if the resulting {index} is now a Smi.
       Label if_indexissmi(assembler, Label::kDeferred),
           if_indexisnotsmi(assembler, Label::kDeferred);
       assembler->Branch(assembler->WordIsSmi(index), &if_indexissmi,
                         &if_indexisnotsmi);
 
       assembler->Bind(&if_indexissmi);
       {
         var_position.Bind(index);
@@ skipping 73 matching lines @@
     // Check if the {position} is already a Smi.
     Variable var_position(assembler, MachineRepresentation::kTagged);
     var_position.Bind(position);
     Label if_positionissmi(assembler),
         if_positionisnotsmi(assembler, Label::kDeferred);
     assembler->Branch(assembler->WordIsSmi(position), &if_positionissmi,
                       &if_positionisnotsmi);
     assembler->Bind(&if_positionisnotsmi);
     {
       // Convert the {position} to an Integer via the ToIntegerStub.
-      Callable callable = CodeFactory::ToInteger(assembler->isolate());
-      Node* index = assembler->CallStub(callable, context, position);
+      Node* index = assembler->ToInteger(context, position);
 
       // Check if the resulting {index} is now a Smi.
       Label if_indexissmi(assembler, Label::kDeferred),
           if_indexisnotsmi(assembler, Label::kDeferred);
       assembler->Branch(assembler->WordIsSmi(index), &if_indexissmi,
                         &if_indexisnotsmi);
 
       assembler->Bind(&if_indexissmi);
       {
         var_position.Bind(index);
@@ skipping 237 matching lines @@
   }
 
   iterator->set_string(isolate->heap()->empty_string());
 
   return *isolate->factory()->NewJSIteratorResult(
       isolate->factory()->undefined_value(), true);
 }
 
 }  // namespace internal
 }  // namespace v8