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Add a stride parameter to scop_do_strip_mine.

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2010-10-20  Sebastian Pop  <sebastian.pop@amd.com>

	* graphite-blocking.c (lst_do_strip_mine_loop): Extra parameter
	for the stride.
	(lst_do_strip_mine): Same.
	(scop_do_strip_mine): Same.
	* graphite-poly.c (apply_poly_transforms): Update call to
	scop_do_strip_mine.
	* graphite-poly.h (scop_do_strip_mine): Update declaration.

From-SVN: r167345
This commit is contained in:
Sebastian Pop 2010-12-01 17:24:37 +00:00 committed by Sebastian Pop
parent a2254c5d78
commit 247fd30e20
5 changed files with 50 additions and 16 deletions
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10
gcc/ChangeLog
View File

@ -1,3 +1,13 @@
2010-12-01 Sebastian Pop <sebastian.pop@amd.com>
* graphite-blocking.c (lst_do_strip_mine_loop): Extra parameter
for the stride.
(lst_do_strip_mine): Same.
(scop_do_strip_mine): Same.
* graphite-poly.c (apply_poly_transforms): Update call to
scop_do_strip_mine.
* graphite-poly.h (scop_do_strip_mine): Update declaration.
2010-12-01 Jan Hubicka <jh@suse.cz>
* tree.c (build_common_builtin_nodes): Do not initialize

10
gcc/ChangeLog.graphite
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@ -1,3 +1,13 @@
2010-10-20 Sebastian Pop <sebastian.pop@amd.com>
* graphite-blocking.c (lst_do_strip_mine_loop): Extra parameter
for the stride.
(lst_do_strip_mine): Same.
(scop_do_strip_mine): Same.
* graphite-poly.c (apply_poly_transforms): Update call to
scop_do_strip_mine.
* graphite-poly.h (scop_do_strip_mine): Update declaration.
2010-09-24 Sebastian Pop <sebastian.pop@amd.com>
PR middle-end/45758

42
gcc/graphite-blocking.c
View File

@ -193,15 +193,14 @@ lst_strip_mine_profitable_p (lst_p lst, int stride)
return res;
}
/* Strip-mines all the loops of LST that are considered profitable to
strip-mine. Return true if it did strip-mined some loops. */
/* Strip-mines all the loops of LST with STRIDE. Return true if it
did strip-mined some loops. */
static bool
lst_do_strip_mine_loop (lst_p lst, int depth)
lst_do_strip_mine_loop (lst_p lst, int depth, int stride)
{
int i;
lst_p l;
int stride = PARAM_VALUE (PARAM_LOOP_BLOCK_TILE_SIZE);
poly_bb_p pbb;
if (!lst)
@ -212,7 +211,7 @@ lst_do_strip_mine_loop (lst_p lst, int depth)
bool res = false;
FOR_EACH_VEC_ELT (lst_p, LST_SEQ (lst), i, l)
res |= lst_do_strip_mine_loop (l, depth);
res |= lst_do_strip_mine_loop (l, depth, stride);
return res;
}
@ -222,30 +221,45 @@ lst_do_strip_mine_loop (lst_p lst, int depth)
stride);
}
/* Strip-mines all the loops of LST that are considered profitable to
strip-mine. Return true if it did strip-mined some loops. */
/* Strip-mines all the loops of LST with STRIDE. When STRIDE is zero,
read the stride from the PARAM_LOOP_BLOCK_TILE_SIZE. Return true
if it did strip-mined some loops.
Strip mining transforms a loop
| for (i = 0; i < N; i++)
| S (i);
into the following loop nest:
| for (k = 0; k < N; k += STRIDE)
| for (j = 0; j < STRIDE; j++)
| S (i = k + j);
*/
static bool
lst_do_strip_mine (lst_p lst)
lst_do_strip_mine (lst_p lst, int stride)
{
int i;
lst_p l;
bool res = false;
int stride = PARAM_VALUE (PARAM_LOOP_BLOCK_TILE_SIZE);
int depth;
if (!stride)
stride = PARAM_VALUE (PARAM_LOOP_BLOCK_TILE_SIZE);
if (!lst
|| !LST_LOOP_P (lst))
return false;
FOR_EACH_VEC_ELT (lst_p, LST_SEQ (lst), i, l)
res |= lst_do_strip_mine (l);
res |= lst_do_strip_mine (l, stride);
depth = lst_depth (lst);
if (depth >= 0
&& lst_strip_mine_profitable_p (lst, stride))
{
res |= lst_do_strip_mine_loop (lst, lst_depth (lst));
res |= lst_do_strip_mine_loop (lst, lst_depth (lst), stride);
lst_add_loop_under_loop (lst);
}
@ -256,9 +270,9 @@ lst_do_strip_mine (lst_p lst)
have been strip-mined. */
bool
scop_do_strip_mine (scop_p scop)
scop_do_strip_mine (scop_p scop, int stride)
{
return lst_do_strip_mine (SCOP_TRANSFORMED_SCHEDULE (scop));
return lst_do_strip_mine (SCOP_TRANSFORMED_SCHEDULE (scop), stride);
}
/* Loop blocks all the loops in SCOP. Returns true when we manage to
@ -272,7 +286,7 @@ scop_do_block (scop_p scop)
store_scattering (scop);
strip_mined = lst_do_strip_mine (SCOP_TRANSFORMED_SCHEDULE (scop));
strip_mined = lst_do_strip_mine (SCOP_TRANSFORMED_SCHEDULE (scop), 0);
interchanged = scop_do_interchange (scop);
/* If we don't interchange loops, the strip mine alone will not be

2
gcc/graphite-poly.c
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@ -776,7 +776,7 @@ apply_poly_transforms (scop_p scop)
else
{
if (flag_loop_strip_mine)
transform_done |= scop_do_strip_mine (scop);
transform_done |= scop_do_strip_mine (scop, 0);
if (flag_loop_interchange)
transform_done |= scop_do_interchange (scop);

2
gcc/graphite-poly.h
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@ -412,7 +412,7 @@ extern void print_iteration_domains (FILE *, scop_p, int);
extern void debug_iteration_domain (poly_bb_p, int);
extern void debug_iteration_domains (scop_p, int);
extern bool scop_do_interchange (scop_p);
extern bool scop_do_strip_mine (scop_p);
extern bool scop_do_strip_mine (scop_p, int);
extern bool scop_do_block (scop_p);
extern bool flatten_all_loops (scop_p);
extern void pbb_number_of_iterations_at_time (poly_bb_p, graphite_dim_t, mpz_t);