1 #ifndef GPU_ARRAY_TILE_H
2 #define GPU_ARRAY_TILE_H
4 #include <isl/aff_type.h>
5 #include <isl/map_type.h>
8 /* The fields stride and shift only contain valid information
10 * If so, they express that current index is such that if you add shift,
11 * then the result is always a multiple of stride.
12 * Let D represent the initial shared_len dimensions of the computed schedule.
13 * The spaces of "lb" and "shift" are of the form
17 struct gpu_array_bound
{
25 /* A tile of an array.
27 * n is the dimension of the array.
28 * bound is an array of size "n" representing the lower bound
29 * and size for each index.
31 * tiling maps a tile in the global array to the corresponding
32 * shared/private memory tile and is of the form
34 * { [D[i] -> A[a]] -> T[(a + shift(i))/stride - lb(i)] }
36 * where D represents the initial shared_len dimensions
37 * of the computed schedule.
39 struct gpu_array_tile
{
42 struct gpu_array_bound
*bound
;
43 isl_multi_aff
*tiling
;
46 struct gpu_array_tile
*gpu_array_tile_create(isl_ctx
*ctx
, int n_index
);
47 struct gpu_array_tile
*gpu_array_tile_free(struct gpu_array_tile
*tile
);
49 __isl_give isl_val
*gpu_array_tile_size(struct gpu_array_tile
*tile
);