Torquefy some simple types

JSArrayIterator, PreparseData

Bug: v8:8952
Change-Id: I0a58402012f6fd5ded0eab92f7e28e3523342650
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1516474Reviewed-by: Jakob Gruber <jgruber@chromium.org>
Commit-Queue: Z Nguyen-Huu <duongn@microsoft.com>
Cr-Commit-Position: refs/heads/master@{#60219}

src/builtins/base.tq

@@ -146,6 +146,12 @@ extern class JSSloppyArgumentsObject extends JSArgumentsObjectWithLength {
   callee: Object;
 }
 
+extern class JSArrayIterator extends JSObject {
+  iterated_object: JSReceiver;
+  next_index: Number;
+  kind: Smi;
+}
+
 extern class JSArray extends JSObject {
   IsEmpty(): bool {
     return this.length == 0;
@@ -219,6 +225,12 @@ type DebugInfo extends HeapObject;
 
 type ScopeInfo extends Object generates 'TNode<ScopeInfo>';
 
+extern class PreparseData extends HeapObject {
+  // TODO(v8:8983): Add declaration for variable-sized region.
+  data_length: int32;
+  inner_length: int32;
+}
+
 extern class SharedFunctionInfo extends HeapObject {
   weak function_data: Object;
   name_or_scope_info: String | NoSharedNameSentinel | ScopeInfo;

src/objects/js-array.h

@@ -174,16 +174,8 @@ class JSArrayIterator : public JSObject {
   inline IterationKind kind() const;
   inline void set_kind(IterationKind kind);
 
-  // Layout description.
-#define JS_ARRAY_ITERATOR_FIELDS(V)     \
-  V(kIteratedObjectOffset, kTaggedSize) \
-  V(kNextIndexOffset, kTaggedSize)      \
-  V(kKindOffset, kTaggedSize)           \
-  /* Header size. */                    \
-  V(kSize, 0)
-
-  DEFINE_FIELD_OFFSET_CONSTANTS(JSObject::kHeaderSize, JS_ARRAY_ITERATOR_FIELDS)
-#undef JS_ARRAY_ITERATOR_FIELDS
+  DEFINE_FIELD_OFFSET_CONSTANTS(JSObject::kHeaderSize,
+                                TORQUE_GENERATED_JSARRAY_ITERATOR_FIELDS)
 
   OBJECT_CONSTRUCTORS(JSArrayIterator, JSObject);
 };

src/objects/shared-function-info.h

@@ -70,16 +70,9 @@ class PreparseData : public HeapObject {
   DECL_PRINTER(PreparseData)
   DECL_VERIFIER(PreparseData)
 
-// Layout description.
-#define PREPARSE_DATA_FIELDS(V)     \
-  V(kDataLengthOffset, kInt32Size)  \
-  V(kInnerLengthOffset, kInt32Size) \
-  /* Header size. */                \
-  V(kDataStartOffset, 0)            \
-  V(kHeaderSize, 0)
-
-  DEFINE_FIELD_OFFSET_CONSTANTS(HeapObject::kHeaderSize, PREPARSE_DATA_FIELDS)
-#undef PREPARSE_DATA_FIELDS
+  DEFINE_FIELD_OFFSET_CONSTANTS(HeapObject::kHeaderSize,
+                                TORQUE_GENERATED_PREPARSE_DATA_FIELDS)
+  static const int kDataStartOffset = kSize;
 
   class BodyDescriptor;