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graphite-blocking.c (pbb_strip_mine_profitable_p): The parameter depth is the loop nesting depth in the LST.

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2009-11-18  Sebastian Pop  <sebastian.pop@amd.com>

	* graphite-blocking.c (pbb_strip_mine_profitable_p): The parameter
	depth is the loop nesting depth in the LST.  Call psct_dynamic_dim
	to transform depth into the time_depth before calling
	pbb_number_of_iterations_at_time.
	(lst_do_strip_mine): Use a scalar variable instead of recomputing
	lst_depth.

From-SVN: r154637
This commit is contained in:
Sebastian Pop 2009-11-25 05:30:35 +00:00 committed by Sebastian Pop
parent 27e432be3c
commit e3bde9f4bc
2 changed files with 16 additions and 5 deletions
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9
gcc/ChangeLog.graphite
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@ -1,3 +1,12 @@
2009-11-18 Sebastian Pop <sebastian.pop@amd.com>
* graphite-blocking.c (pbb_strip_mine_profitable_p): The parameter
depth is the loop nesting depth in the LST. Call psct_dynamic_dim
to transform depth into the time_depth before calling
pbb_number_of_iterations_at_time.
(lst_do_strip_mine): Use a scalar variable instead of recomputing
lst_depth.
2009-11-18 Sebastian Pop <sebastian.pop@amd.com>
Reverted the patch for "scattering permutations" from 2009-10-28.

12
gcc/graphite-blocking.c
View File

@ -174,11 +174,11 @@ pbb_strip_mine_time_depth (poly_bb_p pbb, int time_depth, int stride)
}
/* Returns true when strip mining with STRIDE of the loop around PBB
at scattering time TIME_DEPTH is profitable. */
at DEPTH is profitable. */
static bool
pbb_strip_mine_profitable_p (poly_bb_p pbb,
graphite_dim_t time_depth,
graphite_dim_t depth,
int stride)
{
Value niter, strip_stride;
@ -187,7 +187,7 @@ pbb_strip_mine_profitable_p (poly_bb_p pbb,
value_init (strip_stride);
value_init (niter);
value_set_si (strip_stride, stride);
pbb_number_of_iterations_at_time (pbb, time_depth, niter);
pbb_number_of_iterations_at_time (pbb, psct_dynamic_dim (pbb, depth), niter);
res = value_gt (niter, strip_stride);
value_clear (strip_stride);
value_clear (niter);
@ -234,6 +234,7 @@ lst_do_strip_mine (lst_p lst)
lst_p l;
bool res = false;
int stride = PARAM_VALUE (PARAM_LOOP_BLOCK_TILE_SIZE);
int depth;
if (!lst
|| !LST_LOOP_P (lst))
@ -242,9 +243,10 @@ lst_do_strip_mine (lst_p lst)
for (i = 0; VEC_iterate (lst_p, LST_SEQ (lst), i, l); i++)
res |= lst_do_strip_mine (l);
if (lst_depth (lst) >= 0
depth = lst_depth (lst);
if (depth >= 0
&& pbb_strip_mine_profitable_p (LST_PBB (lst_find_first_pbb (lst)),
lst_depth (lst), stride))
depth, stride))
{
res |= lst_do_strip_mine_loop (lst, lst_depth (lst));
lst_add_loop_under_loop (lst);