diff --git a/clang/lib/Headers/opencl-c-base.h b/clang/lib/Headers/opencl-c-base.h
--- a/clang/lib/Headers/opencl-c-base.h
+++ b/clang/lib/Headers/opencl-c-base.h
@@ -329,9 +329,9 @@
   memory_scope_device = __OPENCL_MEMORY_SCOPE_DEVICE,
 #if defined(__opencl_c_atomic_scope_all_devices)
   memory_scope_all_svm_devices = __OPENCL_MEMORY_SCOPE_ALL_SVM_DEVICES,
-#if (__OPENCL_C_VERSION__ >= CL_VERSION_3_0)
+#if (__OPENCL_C_VERSION__ >= CL_VERSION_3_0 || __OPENCL_CPP_VERSION__ >= 202100)
   memory_scope_all_devices = memory_scope_all_svm_devices,
-#endif // __OPENCL_C_VERSION__ >= CL_VERSION_3_0
+#endif // (__OPENCL_C_VERSION__ >= CL_VERSION_3_0 || __OPENCL_CPP_VERSION__ >= 202100)
 #endif // defined(__opencl_c_atomic_scope_all_devices)
 /**
  * Subgroups have different requirements on forward progress, so just test
diff --git a/clang/lib/Headers/opencl-c.h b/clang/lib/Headers/opencl-c.h
--- a/clang/lib/Headers/opencl-c.h
+++ b/clang/lib/Headers/opencl-c.h
@@ -13256,7 +13256,7 @@
 #endif //cl_khr_fp64
 #endif
 #endif //defined(__opencl_c_generic_address_space)
-#if __OPENCL_C_VERSION__ >= CL_VERSION_3_0
+#if (__OPENCL_C_VERSION__ >= CL_VERSION_3_0 || __OPENCL_CPP_VERSION__ >= 202100)
 void __ovld atomic_init(volatile __global atomic_int *object, int value);
 void __ovld atomic_init(volatile __local atomic_int *object, int value);
 void __ovld atomic_init(volatile __global atomic_uint *object, uint value);
@@ -13273,7 +13273,7 @@
 void __ovld atomic_init(volatile __local atomic_double *object, double value);
 #endif //cl_khr_fp64
 #endif
-#endif //__OPENCL_C_VERSION__ >= CL_VERSION_3_0
+#endif // (__OPENCL_C_VERSION__ >= CL_VERSION_3_0 || __OPENCL_CPP_VERSION__ >= 202100)
 
 // atomic_work_item_fence()
 void __ovld atomic_work_item_fence(cl_mem_fence_flags flags, memory_order order, memory_scope scope);
@@ -13317,7 +13317,7 @@
 uintptr_t __ovld atomic_fetch_sub(volatile atomic_uintptr_t *object, ptrdiff_t operand);
 #endif //defined(cl_khr_int64_base_atomics) && defined(cl_khr_int64_extended_atomics)
 #endif //defined(__opencl_c_generic_address_space)
-#if __OPENCL_C_VERSION__ >= CL_VERSION_3_0
+#if (__OPENCL_C_VERSION__ >= CL_VERSION_3_0 || __OPENCL_CPP_VERSION__ >= 202100)
 int __ovld atomic_fetch_add(volatile __global atomic_int *object, int operand);
 int __ovld atomic_fetch_add(volatile __local atomic_int *object, int operand);
 uint __ovld atomic_fetch_add(volatile __global atomic_uint *object, uint operand);
@@ -13398,7 +13398,7 @@
 uintptr_t __ovld atomic_fetch_add(volatile __global atomic_uintptr_t *object, ptrdiff_t operand);
 uintptr_t __ovld atomic_fetch_sub(volatile __local atomic_uintptr_t *object, ptrdiff_t operand);
 #endif //defined(cl_khr_int64_base_atomics) && defined(cl_khr_int64_extended_atomics)
-#endif //__OPENCL_C_VERSION__ >= CL_VERSION_3_0
+#endif // (__OPENCL_C_VERSION__ >= CL_VERSION_3_0 || __OPENCL_CPP_VERSION__ >= 202100)
 #endif
 
 #if defined(__opencl_c_atomic_scope_device)
@@ -13436,7 +13436,7 @@
 uintptr_t __ovld atomic_fetch_sub_explicit(volatile atomic_uintptr_t *object, ptrdiff_t operand, memory_order order);
 #endif //defined(cl_khr_int64_base_atomics) && defined(cl_khr_int64_extended_atomics)
 #endif //defined(__opencl_c_generic_address_space)
-#if __OPENCL_C_VERSION__ >= CL_VERSION_3_0
+#if (__OPENCL_C_VERSION__ >= CL_VERSION_3_0 || __OPENCL_CPP_VERSION__ >= 202100)
 int __ovld atomic_fetch_add_explicit(volatile __global atomic_int *object, int operand, memory_order order);
 int __ovld atomic_fetch_add_explicit(volatile __local atomic_int *object, int operand, memory_order order);
 uint __ovld atomic_fetch_add_explicit(volatile __global atomic_uint *object, uint operand, memory_order order);
@@ -13517,7 +13517,7 @@
 uintptr_t __ovld atomic_fetch_add_explicit(volatile __global atomic_uintptr_t *object, ptrdiff_t operand, memory_order order);
 uintptr_t __ovld atomic_fetch_sub_explicit(volatile __local atomic_uintptr_t *object, ptrdiff_t operand, memory_order order);
 #endif //defined(cl_khr_int64_base_atomics) && defined(cl_khr_int64_extended_atomics)
-#endif //__OPENCL_C_VERSION__ >= CL_VERSION_3_0
+#endif // (__OPENCL_C_VERSION__ >= CL_VERSION_3_0 || __OPENCL_CPP_VERSION__ >= 202100)
 #endif
 
 #if defined(__opencl_c_generic_address_space)
@@ -13554,7 +13554,7 @@
 uintptr_t __ovld atomic_fetch_sub_explicit(volatile atomic_uintptr_t *object, ptrdiff_t operand, memory_order order, memory_scope scope);
 #endif
 #endif //defined(__opencl_c_generic_address_space)
-#if __OPENCL_C_VERSION__ >= CL_VERSION_3_0
+#if (__OPENCL_C_VERSION__ >= CL_VERSION_3_0 || __OPENCL_CPP_VERSION__ >= 202100)
 int __ovld atomic_fetch_add_explicit(volatile __global atomic_int *object, int operand, memory_order order, memory_scope scope);
 int __ovld atomic_fetch_add_explicit(volatile __local atomic_int *object, int operand, memory_order order, memory_scope scope);
 uint __ovld atomic_fetch_add_explicit(volatile __global atomic_uint *object, uint operand, memory_order order, memory_scope scope);
@@ -13635,7 +13635,7 @@
 uintptr_t __ovld atomic_fetch_add_explicit(volatile __global atomic_uintptr_t *object, ptrdiff_t operand, memory_order order, memory_scope scope);
 uintptr_t __ovld atomic_fetch_sub_explicit(volatile __local atomic_uintptr_t *object, ptrdiff_t operand, memory_order order, memory_scope scope);
 #endif //defined(cl_khr_int64_base_atomics) && defined(cl_khr_int64_extended_atomics)
-#endif //__OPENCL_C_VERSION__ >= CL_VERSION_3_0
+#endif // (__OPENCL_C_VERSION__ >= CL_VERSION_3_0 || __OPENCL_CPP_VERSION__ >= 202100)
 
 // atomic_store()
 
@@ -13653,7 +13653,7 @@
 void __ovld atomic_store(volatile atomic_ulong *object, ulong desired);
 #endif
 #endif //defined(__opencl_c_generic_address_space)
-#if __OPENCL_C_VERSION__ >= CL_VERSION_3_0
+#if (__OPENCL_C_VERSION__ >= CL_VERSION_3_0 || __OPENCL_CPP_VERSION__ >= 202100)
 void __ovld atomic_store(volatile __global atomic_int *object, int desired);
 void __ovld atomic_store(volatile __local atomic_int *object, int desired);
 void __ovld atomic_store(volatile __global atomic_uint *object, uint desired);
@@ -13670,7 +13670,7 @@
 void __ovld atomic_store(volatile __global atomic_ulong *object, ulong desired);
 void __ovld atomic_store(volatile __local atomic_ulong *object, ulong desired);
 #endif //defined(cl_khr_int64_base_atomics) && defined(cl_khr_int64_extended_atomics)
-#endif //__OPENCL_C_VERSION__ >= CL_VERSION_3_0
+#endif // (__OPENCL_C_VERSION__ >= CL_VERSION_3_0 || __OPENCL_CPP_VERSION__ >= 202100)
 #endif
 
 #if defined(__opencl_c_atomic_scope_device)
@@ -13686,7 +13686,7 @@
 void __ovld atomic_store_explicit(volatile atomic_ulong *object, ulong desired, memory_order order);
 #endif
 #endif //defined(__opencl_c_generic_address_space)
-#if __OPENCL_C_VERSION__ >= CL_VERSION_3_0
+#if (__OPENCL_C_VERSION__ >= CL_VERSION_3_0 || __OPENCL_CPP_VERSION__ >= 202100)
 void __ovld atomic_store_explicit(volatile __global atomic_int *object, int desired, memory_order order);
 void __ovld atomic_store_explicit(volatile __local atomic_int *object, int desired, memory_order order);
 void __ovld atomic_store_explicit(volatile __global atomic_uint *object, uint desired, memory_order order);
@@ -13703,7 +13703,7 @@
 void __ovld atomic_store_explicit(volatile __global atomic_ulong *object, ulong desired, memory_order order);
 void __ovld atomic_store_explicit(volatile __local atomic_ulong *object, ulong desired, memory_order order);
 #endif //defined(cl_khr_int64_base_atomics) && defined(cl_khr_int64_extended_atomics)
-#endif //__OPENCL_C_VERSION__ >= CL_VERSION_3_0
+#endif // (__OPENCL_C_VERSION__ >= CL_VERSION_3_0 || __OPENCL_CPP_VERSION__ >= 202100)
 #endif
 
 #if defined(__opencl_c_generic_address_space)
@@ -13718,7 +13718,7 @@
 void __ovld atomic_store_explicit(volatile atomic_ulong *object, ulong desired, memory_order order, memory_scope scope);
 #endif
 #endif //defined(__opencl_c_generic_address_space)
-#if __OPENCL_C_VERSION__ >= CL_VERSION_3_0
+#if (__OPENCL_C_VERSION__ >= CL_VERSION_3_0 || __OPENCL_CPP_VERSION__ >= 202100)
 void __ovld atomic_store_explicit(volatile __global atomic_int *object, int desired, memory_order order, memory_scope scope);
 void __ovld atomic_store_explicit(volatile __local atomic_int *object, int desired, memory_order order, memory_scope scope);
 void __ovld atomic_store_explicit(volatile __global atomic_uint *object, uint desired, memory_order order, memory_scope scope);
@@ -13735,7 +13735,7 @@
 void __ovld atomic_store_explicit(volatile __global atomic_ulong *object, ulong desired, memory_order order, memory_scope scope);
 void __ovld atomic_store_explicit(volatile __local atomic_ulong *object, ulong desired, memory_order order, memory_scope scope);
 #endif //defined(cl_khr_int64_base_atomics) && defined(cl_khr_int64_extended_atomics)
-#endif //__OPENCL_C_VERSION__ >= CL_VERSION_3_0
+#endif // (__OPENCL_C_VERSION__ >= CL_VERSION_3_0 || __OPENCL_CPP_VERSION__ >= 202100)
 
 // atomic_load()
 #if defined(__opencl_c_atomic_order_seq_cst) && defined(__opencl_c_atomic_scope_device)
@@ -13751,7 +13751,7 @@
 ulong __ovld atomic_load(volatile atomic_ulong *object);
 #endif
 #endif //defined(__opencl_c_generic_address_space)
-#if __OPENCL_C_VERSION__ >= CL_VERSION_3_0
+#if (__OPENCL_C_VERSION__ >= CL_VERSION_3_0 || __OPENCL_CPP_VERSION__ >= 202100)
 int __ovld atomic_load(volatile __global atomic_int *object);
 int __ovld atomic_load(volatile __local atomic_int *object);
 uint __ovld atomic_load(volatile __global atomic_uint *object);
@@ -13768,7 +13768,7 @@
 ulong __ovld atomic_load(volatile __global atomic_ulong *object);
 ulong __ovld atomic_load(volatile __local atomic_ulong *object);
 #endif //defined(cl_khr_int64_base_atomics) && defined(cl_khr_int64_extended_atomics)
-#endif //__OPENCL_C_VERSION__ >= CL_VERSION_3_0
+#endif // (__OPENCL_C_VERSION__ >= CL_VERSION_3_0 || __OPENCL_CPP_VERSION__ >= 202100)
 #endif
 
 #if defined(__opencl_c_atomic_scope_device)
@@ -13784,7 +13784,7 @@
 ulong __ovld atomic_load_explicit(volatile atomic_ulong *object, memory_order order);
 #endif
 #endif //defined(__opencl_c_generic_address_space)
-#if __OPENCL_C_VERSION__ >= CL_VERSION_3_0
+#if (__OPENCL_C_VERSION__ >= CL_VERSION_3_0 || __OPENCL_CPP_VERSION__ >= 202100)
 int __ovld atomic_load_explicit(volatile __global atomic_int *object, memory_order order);
 int __ovld atomic_load_explicit(volatile __local atomic_int *object, memory_order order);
 uint __ovld atomic_load_explicit(volatile __global atomic_uint *object, memory_order order);
@@ -13801,7 +13801,7 @@
 ulong __ovld atomic_load_explicit(volatile __global atomic_ulong *object, memory_order order);
 ulong __ovld atomic_load_explicit(volatile __local atomic_ulong *object, memory_order order);
 #endif //defined(cl_khr_int64_base_atomics) && defined(cl_khr_int64_extended_atomics)
-#endif //__OPENCL_C_VERSION__ >= CL_VERSION_3_0
+#endif // (__OPENCL_C_VERSION__ >= CL_VERSION_3_0 || __OPENCL_CPP_VERSION__ >= 202100)
 #endif
 
 #if defined(__opencl_c_generic_address_space)
@@ -13816,7 +13816,7 @@
 ulong __ovld atomic_load_explicit(volatile atomic_ulong *object, memory_order order, memory_scope scope);
 #endif
 #endif //defined(__opencl_c_generic_address_space)
-#if __OPENCL_C_VERSION__ >= CL_VERSION_3_0
+#if (__OPENCL_C_VERSION__ >= CL_VERSION_3_0 || __OPENCL_CPP_VERSION__ >= 202100)
 int __ovld atomic_load_explicit(volatile __global atomic_int *object, memory_order order, memory_scope scope);
 int __ovld atomic_load_explicit(volatile __local atomic_int *object, memory_order order, memory_scope scope);
 uint __ovld atomic_load_explicit(volatile __global atomic_uint *object, memory_order order, memory_scope scope);
@@ -13833,7 +13833,7 @@
 ulong __ovld atomic_load_explicit(volatile __global atomic_ulong *object, memory_order order, memory_scope scope);
 ulong __ovld atomic_load_explicit(volatile __local atomic_ulong *object, memory_order order, memory_scope scope);
 #endif //defined(cl_khr_int64_base_atomics) && defined(cl_khr_int64_extended_atomics)
-#endif //__OPENCL_C_VERSION__ >= CL_VERSION_3_0
+#endif // (__OPENCL_C_VERSION__ >= CL_VERSION_3_0 || __OPENCL_CPP_VERSION__ >= 202100)
 
 // atomic_exchange()
 
@@ -13850,7 +13850,7 @@
 ulong __ovld atomic_exchange(volatile atomic_ulong *object, ulong desired);
 #endif
 #endif //defined(__opencl_c_generic_address_space)
-#if __OPENCL_C_VERSION__ >= CL_VERSION_3_0
+#if (__OPENCL_C_VERSION__ >= CL_VERSION_3_0 || __OPENCL_CPP_VERSION__ >= 202100)
 int __ovld atomic_exchange(volatile __global atomic_int *object, int desired);
 int __ovld atomic_exchange(volatile __local atomic_int *object, int desired);
 uint __ovld atomic_exchange(volatile __global atomic_uint *object, uint desired);
@@ -13867,7 +13867,7 @@
 ulong __ovld atomic_exchange(volatile __global atomic_ulong *object, ulong desired);
 ulong __ovld atomic_exchange(volatile __local atomic_ulong *object, ulong desired);
 #endif //defined(cl_khr_int64_base_atomics) && defined(cl_khr_int64_extended_atomics)
-#endif //__OPENCL_C_VERSION__ >= CL_VERSION_3_0
+#endif // (__OPENCL_C_VERSION__ >= CL_VERSION_3_0 || __OPENCL_CPP_VERSION__ >= 202100)
 #endif
 
 #if defined(__opencl_c_atomic_scope_device)
@@ -13883,7 +13883,7 @@
 ulong __ovld atomic_exchange_explicit(volatile atomic_ulong *object, ulong desired, memory_order order);
 #endif
 #endif //defined(__opencl_c_generic_address_space)
-#if __OPENCL_C_VERSION__ >= CL_VERSION_3_0
+#if (__OPENCL_C_VERSION__ >= CL_VERSION_3_0 || __OPENCL_CPP_VERSION__ >= 202100)
 int __ovld atomic_exchange_explicit(volatile __global atomic_int *object, int desired, memory_order order);
 int __ovld atomic_exchange_explicit(volatile __local atomic_int *object, int desired, memory_order order);
 uint __ovld atomic_exchange_explicit(volatile __global atomic_uint *object, uint desired, memory_order order);
@@ -13900,7 +13900,7 @@
 ulong __ovld atomic_exchange_explicit(volatile __global atomic_ulong *object, ulong desired, memory_order order);
 ulong __ovld atomic_exchange_explicit(volatile __local atomic_ulong *object, ulong desired, memory_order order);
 #endif //defined(cl_khr_int64_base_atomics) && defined(cl_khr_int64_extended_atomics)wi
-#endif //__OPENCL_C_VERSION__ >= CL_VERSION_3_0
+#endif // (__OPENCL_C_VERSION__ >= CL_VERSION_3_0 || __OPENCL_CPP_VERSION__ >= 202100)
 #endif
 
 #if defined(__opencl_c_generic_address_space)
@@ -13915,7 +13915,7 @@
 ulong __ovld atomic_exchange_explicit(volatile atomic_ulong *object, ulong desired, memory_order order, memory_scope scope);
 #endif
 #endif //defined(__opencl_c_generic_address_space)
-#if __OPENCL_C_VERSION__ >= CL_VERSION_3_0
+#if (__OPENCL_C_VERSION__ >= CL_VERSION_3_0 || __OPENCL_CPP_VERSION__ >= 202100)
 int __ovld atomic_exchange_explicit(volatile __global atomic_int *object, int desired, memory_order order, memory_scope scope);
 int __ovld atomic_exchange_explicit(volatile __local atomic_int *object, int desired, memory_order order, memory_scope scope);
 uint __ovld atomic_exchange_explicit(volatile __global atomic_uint *object, uint desired, memory_order order, memory_scope scope);
@@ -13932,7 +13932,7 @@
 ulong __ovld atomic_exchange_explicit(volatile __global atomic_ulong *object, ulong desired, memory_order order, memory_scope scope);
 ulong __ovld atomic_exchange_explicit(volatile __local atomic_ulong *object, ulong desired, memory_order order, memory_scope scope);
 #endif //defined(cl_khr_int64_base_atomics) && defined(cl_khr_int64_extended_atomics)
-#endif //__OPENCL_C_VERSION__ >= CL_VERSION_3_0
+#endif // (__OPENCL_C_VERSION__ >= CL_VERSION_3_0 || __OPENCL_CPP_VERSION__ >= 202100)
 
 // atomic_compare_exchange_strong() and atomic_compare_exchange_weak()
 #if defined(__opencl_c_atomic_order_seq_cst) && defined(__opencl_c_atomic_scope_device)
@@ -13954,7 +13954,7 @@
 bool __ovld atomic_compare_exchange_weak(volatile atomic_ulong *object, ulong *expected, ulong desired);
 #endif
 #endif //defined(__opencl_c_generic_address_space)
-#if __OPENCL_C_VERSION__ >= CL_VERSION_3_0
+#if (__OPENCL_C_VERSION__ >= CL_VERSION_3_0 || __OPENCL_CPP_VERSION__ >= 202100)
 bool __ovld atomic_compare_exchange_strong(volatile __global atomic_int *object, __global int *expected, int desired);
 bool __ovld atomic_compare_exchange_strong(volatile __global atomic_int *object, __local int *expected, int desired);
 bool __ovld atomic_compare_exchange_strong(volatile __global atomic_int *object, __private int *expected, int desired);
@@ -14031,7 +14031,7 @@
 bool __ovld atomic_compare_exchange_weak(volatile __local atomic_ulong *object, __local ulong *expected, ulong desired);
 bool __ovld atomic_compare_exchange_weak(volatile __local atomic_ulong *object, __private ulong *expected, ulong desired);
 #endif //defined(cl_khr_int64_base_atomics) && defined(cl_khr_int64_extended_atomics)
-#endif //__OPENCL_C_VERSION__ >= CL_VERSION_3_0
+#endif // (__OPENCL_C_VERSION__ >= CL_VERSION_3_0 || __OPENCL_CPP_VERSION__ >= 202100)
 #endif
 
 #if defined(__opencl_c_generic_address_space)
@@ -14064,7 +14064,7 @@
                                                                                  ulong desired, memory_order success, memory_order failure);
 #endif
 #endif //defined(__opencl_c_generic_address_space)
-#if __OPENCL_C_VERSION__ >= CL_VERSION_3_0
+#if (__OPENCL_C_VERSION__ >= CL_VERSION_3_0 || __OPENCL_CPP_VERSION__ >= 202100)
 bool __ovld atomic_compare_exchange_strong_explicit(volatile __global atomic_int *object, __global int *expected,
                                                                                  int desired, memory_order success, memory_order failure);
 bool __ovld atomic_compare_exchange_strong_explicit(volatile __global atomic_int *object, __local int *expected,
@@ -14213,7 +14213,7 @@
 bool __ovld atomic_compare_exchange_weak_explicit(volatile __local atomic_ulong *object, __private ulong *expected,
                                                                                  ulong desired, memory_order success, memory_order failure);
 #endif //defined(cl_khr_int64_base_atomics) && defined(cl_khr_int64_extended_atomics)
-#endif //__OPENCL_C_VERSION__ >= CL_VERSION_3_0
+#endif // (__OPENCL_C_VERSION__ >= CL_VERSION_3_0 || __OPENCL_CPP_VERSION__ >= 202100)
 
 #if defined(__opencl_c_generic_address_space)
 bool __ovld atomic_compare_exchange_strong_explicit(volatile atomic_int *object, int *expected,
@@ -14245,7 +14245,7 @@
                                                                                  ulong desired, memory_order success, memory_order failure, memory_scope scope);
 #endif
 #endif //defined(__opencl_c_generic_address_space)
-#if __OPENCL_C_VERSION__ >= CL_VERSION_3_0
+#if (__OPENCL_C_VERSION__ >= CL_VERSION_3_0 || __OPENCL_CPP_VERSION__ >= 202100)
 bool __ovld atomic_compare_exchange_strong_explicit(volatile __global atomic_int *object, __global int *expected,
                                                                                  int desired, memory_order success, memory_order failure, memory_scope scope);
 bool __ovld atomic_compare_exchange_strong_explicit(volatile __global atomic_int *object, __local int *expected,
@@ -14394,7 +14394,7 @@
 bool __ovld atomic_compare_exchange_weak_explicit(volatile __local atomic_ulong *object, __private ulong *expected,
                                                                                  ulong desired, memory_order success, memory_order failure, memory_scope scope);
 #endif //defined(cl_khr_int64_base_atomics) && defined(cl_khr_int64_extended_atomics)
-#endif //__OPENCL_C_VERSION__ >= CL_VERSION_3_0
+#endif // (__OPENCL_C_VERSION__ >= CL_VERSION_3_0 || __OPENCL_CPP_VERSION__ >= 202100)
 
 // atomic_flag_test_and_set() and atomic_flag_clear()
 #if defined(__opencl_c_atomic_order_seq_cst) && defined(__opencl_c_atomic_scope_device)
@@ -14402,12 +14402,12 @@
 bool __ovld atomic_flag_test_and_set(volatile atomic_flag *object);
 void __ovld atomic_flag_clear(volatile atomic_flag *object);
 #endif //defined(__opencl_c_generic_address_space)
-#if __OPENCL_C_VERSION__ >= CL_VERSION_3_0
+#if (__OPENCL_C_VERSION__ >= CL_VERSION_3_0 || __OPENCL_CPP_VERSION__ >= 202100)
 bool __ovld atomic_flag_test_and_set(volatile __global atomic_flag *object);
 bool __ovld atomic_flag_test_and_set(volatile __local atomic_flag *object);
 void __ovld atomic_flag_clear(volatile __global atomic_flag *object);
 void __ovld atomic_flag_clear(volatile __local atomic_flag *object);
-#endif //__OPENCL_C_VERSION__ >= CL_VERSION_3_0
+#endif // (__OPENCL_C_VERSION__ >= CL_VERSION_3_0 || __OPENCL_CPP_VERSION__ >= 202100)
 #endif
 
 #if defined(__opencl_c_atomic_scope_device)
@@ -14415,24 +14415,24 @@
 bool __ovld atomic_flag_test_and_set_explicit(volatile atomic_flag *object, memory_order order);
 void __ovld atomic_flag_clear_explicit(volatile atomic_flag *object, memory_order order);
 #endif //defined(__opencl_c_generic_address_space)
-#if __OPENCL_C_VERSION__ >= CL_VERSION_3_0
+#if (__OPENCL_C_VERSION__ >= CL_VERSION_3_0 || __OPENCL_CPP_VERSION__ >= 202100)
 bool __ovld atomic_flag_test_and_set_explicit(volatile __global atomic_flag *object, memory_order order);
 bool __ovld atomic_flag_test_and_set_explicit(volatile __local atomic_flag *object, memory_order order);
 void __ovld atomic_flag_clear_explicit(volatile __global atomic_flag *object, memory_order order);
 void __ovld atomic_flag_clear_explicit(volatile __local atomic_flag *object, memory_order order);
-#endif //__OPENCL_C_VERSION__ >= CL_VERSION_3_0
+#endif // (__OPENCL_C_VERSION__ >= CL_VERSION_3_0 || __OPENCL_CPP_VERSION__ >= 202100)
 #endif
 
 #if defined(__opencl_c_generic_address_space)
 bool __ovld atomic_flag_test_and_set_explicit(volatile atomic_flag *object, memory_order order, memory_scope scope);
 void __ovld atomic_flag_clear_explicit(volatile atomic_flag *object, memory_order order, memory_scope scope);
 #endif //defined(__opencl_c_generic_address_space)
-#if __OPENCL_C_VERSION__ >= CL_VERSION_3_0
+#if (__OPENCL_C_VERSION__ >= CL_VERSION_3_0 || __OPENCL_CPP_VERSION__ >= 202100)
 bool __ovld atomic_flag_test_and_set_explicit(volatile __global atomic_flag *object, memory_order order, memory_scope scope);
 bool __ovld atomic_flag_test_and_set_explicit(volatile __local atomic_flag *object, memory_order order, memory_scope scope);
 void __ovld atomic_flag_clear_explicit(volatile __global atomic_flag *object, memory_order order, memory_scope scope);
 void __ovld atomic_flag_clear_explicit(volatile __local atomic_flag *object, memory_order order, memory_scope scope);
-#endif //__OPENCL_C_VERSION__ >= CL_VERSION_3_0
+#endif // (__OPENCL_C_VERSION__ >= CL_VERSION_3_0 || __OPENCL_CPP_VERSION__ >= 202100)
 #endif //defined(__OPENCL_CPP_VERSION__) || (__OPENCL_C_VERSION__ >= CL_VERSION_2_0)
 
 // OpenCL v1.1 s6.11.12, v1.2 s6.12.12, v2.0 s6.13.12 - Miscellaneous Vector Functions