[builtins] fix Allocate() call in ReduceStringIterator()

src/compiler/js-builtin-reducer.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/compiler/js-builtin-reducer.h"
 
 #include "src/compilation-dependencies.h"
 #include "src/compiler/access-builder.h"
 #include "src/compiler/js-graph.h"
 #include "src/compiler/node-matchers.h"
@@ skipping 1029 matching lines @@
         context, context, effect);
     Node* map = effect = graph()->NewNode(
         javascript()->LoadContext(0, Context::STRING_ITERATOR_MAP_INDEX, true),
         native_context, native_context, effect);
 
     // allocate new iterator
     effect = graph()->NewNode(
         common()->BeginRegion(RegionObservability::kNotObservable), effect);
     Node* value = effect = graph()->NewNode(
         simplified()->Allocate(NOT_TENURED),
-        jsgraph()->Int32Constant(JSStringIterator::kSize), effect, control);
+        jsgraph()->Constant(JSStringIterator::kSize), effect, control);
     effect = graph()->NewNode(simplified()->StoreField(AccessBuilder::ForMap()),
                               value, map, effect, control);
     effect = graph()->NewNode(
         simplified()->StoreField(AccessBuilder::ForJSObjectProperties()), value,
         jsgraph()->EmptyFixedArrayConstant(), effect, control);
     effect = graph()->NewNode(
         simplified()->StoreField(AccessBuilder::ForJSObjectElements()), value,
         jsgraph()->EmptyFixedArrayConstant(), effect, control);
 
     // attach the iterator to this string
@@ skipping 385 matching lines @@
   return jsgraph()->simplified();
 }
 
 JSOperatorBuilder* JSBuiltinReducer::javascript() const {
   return jsgraph()->javascript();
 }
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8