Line data    Source code

       1             : // Copyright 2018 the V8 project authors. All rights reserved.
       2             : // Use of this source code is governed by a BSD-style license that can be
       3             : // found in the LICENSE file.
       4             : 
       5             : #ifndef V8_OBJECTS_INSTANCE_TYPE_INL_H_
       6             : #define V8_OBJECTS_INSTANCE_TYPE_INL_H_
       7             : 
       8             : #include "src/objects/map-inl.h"
       9             : #include "src/utils.h"
      10             : 
      11             : // Has to be the last include (doesn't have include guards):
      12             : #include "src/objects/object-macros.h"
      13             : 
      14             : namespace v8 {
      15             : namespace internal {
      16             : 
      17             : namespace InstanceTypeChecker {
      18             : 
      19             : // Define type checkers for classes with single instance type.
      20   186705456 : INSTANCE_TYPE_CHECKERS_SINGLE(INSTANCE_TYPE_CHECKER)
      21             : 
      22             : #define TYPED_ARRAY_INSTANCE_TYPE_CHECKER(Type, type, TYPE, ctype) \
      23             :   INSTANCE_TYPE_CHECKER(Fixed##Type##Array, FIXED_##TYPE##_ARRAY_TYPE)
      24             : TYPED_ARRAYS(TYPED_ARRAY_INSTANCE_TYPE_CHECKER)
      25             : #undef TYPED_ARRAY_INSTANCE_TYPE_CHECKER
      26             : 
      27             : #define STRUCT_INSTANCE_TYPE_CHECKER(TYPE, Name, name) \
      28             :   INSTANCE_TYPE_CHECKER(Name, TYPE)
      29     9032065 : STRUCT_LIST(STRUCT_INSTANCE_TYPE_CHECKER)
      30             : #undef STRUCT_INSTANCE_TYPE_CHECKER
      31             : 
      32             : // Define type checkers for classes with ranges of instance types.
      33             : #define INSTANCE_TYPE_CHECKER_RANGE(type, first_instance_type,                \
      34             :                                     last_instance_type)                       \
      35             :   V8_INLINE bool Is##type(InstanceType instance_type) {                       \
      36             :     return IsInRange(instance_type, first_instance_type, last_instance_type); \
      37             :   }
      38             : INSTANCE_TYPE_CHECKERS_RANGE(INSTANCE_TYPE_CHECKER_RANGE)
      39             : #undef INSTANCE_TYPE_CHECKER_RANGE
      40             : 
      41             : V8_INLINE bool IsFixedArrayBase(InstanceType instance_type) {
      42   131848763 :   return IsFixedArray(instance_type) || IsFixedDoubleArray(instance_type) ||
      43   131866848 :          IsFixedTypedArrayBase(instance_type) || IsByteArray(instance_type) ||
      44             :          IsBytecodeArray(instance_type);
      45             : }
      46             : 
      47             : V8_INLINE bool IsHeapObject(InstanceType instance_type) { return true; }
      48             : 
      49             : V8_INLINE bool IsInternalizedString(InstanceType instance_type) {
      50             :   STATIC_ASSERT(kNotInternalizedTag != 0);
      51   188261076 :   return (instance_type & (kIsNotStringMask | kIsNotInternalizedMask)) ==
      52      368531 :          (kStringTag | kInternalizedTag);
      53             : }
      54             : 
      55             : V8_INLINE bool IsJSObject(InstanceType instance_type) {
      56             :   STATIC_ASSERT(LAST_TYPE == LAST_JS_OBJECT_TYPE);
      57    56336565 :   return instance_type >= FIRST_JS_OBJECT_TYPE;
      58             : }
      59             : 
      60             : V8_INLINE bool IsJSReceiver(InstanceType instance_type) {
      61             :   STATIC_ASSERT(LAST_TYPE == LAST_JS_RECEIVER_TYPE);
      62        4808 :   return instance_type >= FIRST_JS_RECEIVER_TYPE;
      63             : }
      64             : 
      65             : }  // namespace InstanceTypeChecker
      66             : 
      67             : // TODO(v8:7786): For instance types that have a single map instance on the
      68             : // roots, and when that map is a embedded in the binary, compare against the map
      69             : // pointer rather than looking up the instance type.
      70  5088953271 : INSTANCE_TYPE_CHECKERS(TYPE_CHECKER)
      71             : 
      72             : #define TYPED_ARRAY_TYPE_CHECKER(Type, type, TYPE, ctype) \
      73             :   TYPE_CHECKER(Fixed##Type##Array)
      74             : TYPED_ARRAYS(TYPED_ARRAY_TYPE_CHECKER)
      75             : #undef TYPED_ARRAY_TYPE_CHECKER
      76             : 
      77             : }  // namespace internal
      78             : }  // namespace v8
      79             : 
      80             : #include "src/objects/object-macros-undef.h"
      81             : 
      82             : #endif  // V8_OBJECTS_INSTANCE_TYPE_INL_H_