Reland of [stubs] KeyedStoreGeneric: inline dictionary property stores

src/builtins/builtins-regexp.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-utils.h"
 #include "src/builtins/builtins.h"
 
 #include "src/code-factory.h"
 #include "src/regexp/jsregexp.h"
 #include "src/regexp/regexp-utils.h"
@@ skipping 275 matching lines @@
       mode);
 
   // Calculate the substring of the first match before creating the result array
   // to avoid an unnecessary write barrier storing the first result.
   Node* const first = a->SubString(context, string, start, end);
 
   Node* const result =
       a->AllocateRegExpResult(context, num_results, start, string);
   Node* const result_elements = a->LoadElements(result);
 
-  a->StoreFixedArrayElement(result_elements, a->IntPtrConstant(0), first,
-                            SKIP_WRITE_BARRIER);
+  a->StoreFixedArrayElement(result_elements, 0, first, SKIP_WRITE_BARRIER);
 
   a->GotoIf(a->SmiEqual(num_results, a->SmiConstant(Smi::FromInt(1))), &out);
 
   // Store all remaining captures.
   Node* const limit = a->IntPtrAdd(
       a->IntPtrConstant(RegExpMatchInfo::kFirstCaptureIndex), num_indices);
 
   Variable var_from_cursor(a, MachineType::PointerRepresentation());
   Variable var_to_cursor(a, MachineType::PointerRepresentation());
 
@@ skipping 1531 matching lines @@
 
           Node* const replacement_obj =
               a->CallJS(call_callable, context, reflect_apply, undefined,
                         replace_callable, undefined, elem);
 
           // Overwrite the i'th element in the results with the string we got
           // back from the callback function.
 
           Node* const replacement_str = a->ToString(context, replacement_obj);
           a->StoreFixedArrayElement(res_elems, index, replacement_str,
-                                    UPDATE_WRITE_BARRIER, mode);
+                                    UPDATE_WRITE_BARRIER, 0, mode);
 
           a->Goto(&do_continue);
           a->Bind(&do_continue);
         },
         increment, CodeStubAssembler::IndexAdvanceMode::kPost);
 
     a->Goto(&create_result);
   }
 
   a->Bind(&create_result);
@@ skipping 257 matching lines @@
   a.Bind(&if_matched);
   {
     Node* result = ConstructNewResultFromMatchInfo(isolate, &a, context,
                                                    match_indices, string);
     a.Return(result);
   }
 }
 
 }  // namespace internal
 }  // namespace v8