Add Smi::Zero and replace all Smi::FromInt(0) calls

src/ast/scopeinfo.cc

 // Copyright 2011 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 <stdlib.h>
 
 #include "src/ast/context-slot-cache.h"
 #include "src/ast/scopes.h"
 #include "src/ast/variables.h"
 #include "src/bootstrapper.h"
@@ skipping 297 matching lines @@
       IsDebugEvaluateScopeField::encode(false);
   scope_info->SetFlags(flags);
 
   scope_info->SetParameterCount(0);
   scope_info->SetStackLocalCount(0);
   scope_info->SetContextLocalCount(0);
 
   int index = kVariablePartIndex;
   DCHECK_EQ(index, scope_info->ParameterNamesIndex());
   DCHECK_EQ(index, scope_info->StackLocalFirstSlotIndex());
-  scope_info->set(index++, Smi::FromInt(0));
+  scope_info->set(index++, Smi::kZero);
   DCHECK_EQ(index, scope_info->StackLocalNamesIndex());
   DCHECK_EQ(index, scope_info->ReceiverInfoIndex());
   DCHECK_EQ(index, scope_info->FunctionNameInfoIndex());
   DCHECK(index == scope_info->OuterScopeInfoIndex());
   if (has_outer_scope_info) {
     scope_info->set(index++, *outer_scope.ToHandleChecked());
   }
   DCHECK_EQ(index, scope_info->length());
   DCHECK_EQ(0, scope_info->ParameterCount());
   DCHECK_EQ(Context::MIN_CONTEXT_SLOTS, scope_info->ContextLength());
@@ skipping 570 matching lines @@
   result->set(kModuleRequestsIndex, *module_requests);
   result->set(kSpecialExportsIndex, *special_exports);
   result->set(kRegularExportsIndex, *regular_exports);
   result->set(kNamespaceImportsIndex, *namespace_imports);
   result->set(kRegularImportsIndex, *regular_imports);
   return result;
 }
 
 }  // namespace internal
 }  // namespace v8