15  * array_index_mask_nospec() - generate a ~0 mask when index < size, 0 otherwise
16  * @index: array element index
19  * When @index is out of bounds (@index >= @size), the sign bit will be
21  * zero for an out of bounds index, or ~0 if within bounds [0, @size).
24 static inline unsigned long array_index_mask_nospec(unsigned long index,  in array_index_mask_nospec()  argument
30 	 * into account the value of @index under speculation.  in array_index_mask_nospec()
32 	OPTIMIZER_HIDE_VAR(index);  in array_index_mask_nospec()
33 	return ~(long)(index | (size - 1UL - index)) >> (BITS_PER_LONG - 1);  in array_index_mask_nospec()
38  * array_index_nospec - sanitize an array index after a bounds check
42  *     if (index < size) {
43  *         index = array_index_nospec(index, size);
44  *         val = array[index];
48  * array_index_nospec() will clamp the index within the range of [0,
51 #define array_index_nospec(index, size)					\  argument
53 	typeof(index) _i = (index);					\