mirror of
git://gcc.gnu.org/git/gcc.git
synced 2025-02-24 20:56:10 +08:00
graphite-blocking.c (pbb_strip_mine_loop_depth): Renamed pbb_strip_mine_time_depth.
2009-08-28 Konrad Trifunovic <konrad.trifunovic@gmail.com> Sebastian Pop <sebastian.pop@amd.com> * graphite-blocking.c (pbb_strip_mine_loop_depth): Renamed pbb_strip_mine_time_depth. Changed the implementation so that transformation is expressed as a transformation on time (scatttering) dimensions. Also, ensures that the 2d+1 scheduling format is preserved. (pbb_strip_mine_profitable_p): Profitability is based on the iteration number of a given time (scattering) dimension, and not on a original loop depth dimension. (pbb_strip_mine): Call pbb_number_of_iterations_at_time. (pbb_do_strip_mine): Call psct_dynamic_dim. * graphite-poly.c (pbb_number_of_iterations_at_time): New. * graphite-poly.h (pbb_number_of_iterations_at_time): Declared. (pbb_nb_dynamic_scattering_transform): New. (psct_dynamic_dim): New. Co-Authored-By: Sebastian Pop <sebastian.pop@amd.com> From-SVN: r151186
This commit is contained in:
Konrad Trifunovic
Sebastian Pop
parent
e6a83a8e9e
commit
baf4b88182
@ -1,3 +1,21 @@
|
||||
2009-08-28 Konrad Trifunovic <konrad.trifunovic@gmail.com>
|
||||
Sebastian Pop <sebastian.pop@amd.com>
|
||||
|
||||
* graphite-blocking.c (pbb_strip_mine_loop_depth): Renamed
|
||||
pbb_strip_mine_time_depth. Changed the implementation so that
|
||||
transformation is expressed as a transformation on
|
||||
time (scatttering) dimensions. Also, ensures that the 2d+1
|
||||
scheduling format is preserved.
|
||||
(pbb_strip_mine_profitable_p): Profitability is based on the
|
||||
iteration number of a given time (scattering) dimension,
|
||||
and not on a original loop depth dimension.
|
||||
(pbb_strip_mine): Call pbb_number_of_iterations_at_time.
|
||||
(pbb_do_strip_mine): Call psct_dynamic_dim.
|
||||
* graphite-poly.c (pbb_number_of_iterations_at_time): New.
|
||||
* graphite-poly.h (pbb_number_of_iterations_at_time): Declared.
|
||||
(pbb_nb_dynamic_scattering_transform): New.
|
||||
(psct_dynamic_dim): New.
|
||||
|
||||
2009-08-28 Konrad Trifunovic <konrad.trifunovic@gmail.com>
|
||||
|
||||
* graphite-ppl.c (ppl_max_for_le): Renamed ppl_max_for_le_pointset.
|
||||
|
||||
@ -1,3 +1,21 @@
|
||||
2009-08-25 Konrad Trifunovic <konrad.trifunovic@gmail.com>
|
||||
Sebastian Pop <sebastian.pop@amd.com>
|
||||
|
||||
* graphite-blocking.c (pbb_strip_mine_loop_depth): Renamed
|
||||
pbb_strip_mine_time_depth. Changed the implementation so that
|
||||
transformation is expressed as a transformation on
|
||||
time (scatttering) dimensions. Also, ensures that the 2d+1
|
||||
scheduling format is preserved.
|
||||
(pbb_strip_mine_profitable_p): Profitability is based on the
|
||||
iteration number of a given time (scattering) dimension,
|
||||
and not on a original loop depth dimension.
|
||||
(pbb_strip_mine): Call pbb_number_of_iterations_at_time.
|
||||
(pbb_do_strip_mine): Call psct_dynamic_dim.
|
||||
* graphite-poly.c (pbb_number_of_iterations_at_time): New.
|
||||
* graphite-poly.h (pbb_number_of_iterations_at_time): Declared.
|
||||
(pbb_nb_dynamic_scattering_transform): New.
|
||||
(psct_dynamic_dim): New.
|
||||
|
||||
2009-08-25 Konrad Trifunovic <konrad.trifunovic@gmail.com>
|
||||
|
||||
* graphite-ppl.c (ppl_max_for_le): Renamed ppl_max_for_le_pointset.
|
||||
|
||||
@ -54,8 +54,10 @@ along with GCC; see the file COPYING3. If not see
|
||||
#include "graphite-poly.h"
|
||||
|
||||
|
||||
/* Strip mines with a factor STRIDE the loop around PBB at depth
|
||||
LOOP_DEPTH. The following example comes from the wiki page:
|
||||
/* Strip mines with a factor STRIDE the scattering (time) dimension
|
||||
around PBB at depth TIME_DEPTH.
|
||||
|
||||
The following example comes from the wiki page:
|
||||
http://gcc.gnu.org/wiki/Graphite/Strip_mine
|
||||
|
||||
The strip mine of a loop with a tile of 64 can be obtained with a
|
||||
@ -106,16 +108,19 @@ along with GCC; see the file COPYING3. If not see
|
||||
*/
|
||||
|
||||
static bool
|
||||
pbb_strip_mine_loop_depth (poly_bb_p pbb, int loop_depth, int stride)
|
||||
pbb_strip_mine_time_depth (poly_bb_p pbb, int time_depth, int stride)
|
||||
{
|
||||
ppl_dimension_type iter, dim;
|
||||
ppl_dimension_type iter, dim, strip;
|
||||
ppl_Polyhedron_t res = PBB_TRANSFORMED_SCATTERING (pbb);
|
||||
ppl_dimension_type strip = psct_scattering_dim_for_loop_depth (pbb,
|
||||
loop_depth);
|
||||
/* STRIP is the dimension that iterates with stride STRIDE. */
|
||||
/* ITER is the dimension that enumerates single iterations inside
|
||||
one strip that has at most STRIDE iterations. */
|
||||
strip = time_depth;
|
||||
iter = strip + 2;
|
||||
|
||||
psct_add_scattering_dimension (pbb, strip);
|
||||
psct_add_scattering_dimension (pbb, strip + 1);
|
||||
|
||||
iter = psct_iterator_dim (pbb, loop_depth);
|
||||
ppl_Polyhedron_space_dimension (res, &dim);
|
||||
|
||||
/* Lower bound of the striped loop. */
|
||||
@ -149,15 +154,31 @@ pbb_strip_mine_loop_depth (poly_bb_p pbb, int loop_depth, int stride)
|
||||
ppl_delete_Constraint (new_cstr);
|
||||
}
|
||||
|
||||
/* Static scheduling for ITER level.
|
||||
This is mandatory to keep the 2d + 1 canonical scheduling format. */
|
||||
{
|
||||
ppl_Constraint_t new_cstr;
|
||||
ppl_Linear_Expression_t expr;
|
||||
|
||||
ppl_new_Linear_Expression_with_dimension (&expr, dim);
|
||||
ppl_set_coef (expr, strip + 1, 1);
|
||||
ppl_set_inhomogeneous (expr, 0);
|
||||
|
||||
ppl_new_Constraint (&new_cstr, expr, PPL_CONSTRAINT_TYPE_EQUAL);
|
||||
ppl_delete_Linear_Expression (expr);
|
||||
ppl_Polyhedron_add_constraint (res, new_cstr);
|
||||
ppl_delete_Constraint (new_cstr);
|
||||
}
|
||||
|
||||
return true;
|
||||
}
|
||||
|
||||
/* Returns true when strip mining with STRIDE of the loop around PBB
|
||||
at depth LOOP_DEPTH is profitable. */
|
||||
at scattering time TIME_DEPTH is profitable. */
|
||||
|
||||
static bool
|
||||
pbb_strip_mine_profitable_p (poly_bb_p pbb,
|
||||
graphite_dim_t loop_depth,
|
||||
graphite_dim_t time_depth,
|
||||
int stride)
|
||||
{
|
||||
Value niter, strip_stride;
|
||||
@ -166,7 +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 (pbb, loop_depth, niter);
|
||||
pbb_number_of_iterations_at_time (pbb, time_depth, niter);
|
||||
res = value_gt (niter, strip_stride);
|
||||
value_clear (strip_stride);
|
||||
value_clear (niter);
|
||||
@ -180,13 +201,18 @@ pbb_strip_mine_profitable_p (poly_bb_p pbb,
|
||||
static bool
|
||||
pbb_do_strip_mine (poly_bb_p pbb)
|
||||
{
|
||||
graphite_dim_t loop_depth;
|
||||
graphite_dim_t s_dim;
|
||||
int stride = 64;
|
||||
bool transform_done = false;
|
||||
|
||||
for (loop_depth = 0; loop_depth < pbb_dim_iter_domain (pbb); loop_depth++)
|
||||
if (pbb_strip_mine_profitable_p (pbb, loop_depth, stride))
|
||||
transform_done |= pbb_strip_mine_loop_depth (pbb, loop_depth, stride);
|
||||
for (s_dim = 0; s_dim < pbb_nb_dynamic_scattering_transform (pbb); s_dim++)
|
||||
if (pbb_strip_mine_profitable_p (pbb, psct_dynamic_dim (pbb, s_dim),
|
||||
stride))
|
||||
{
|
||||
ppl_dimension_type d = psct_dynamic_dim (pbb, s_dim);
|
||||
transform_done |= pbb_strip_mine_time_depth (pbb, d, stride);
|
||||
s_dim++;
|
||||
}
|
||||
|
||||
return transform_done;
|
||||
}
|
||||
|
||||
@ -724,5 +724,46 @@ pbb_number_of_iterations (poly_bb_p pbb,
|
||||
ppl_delete_Linear_Expression (le);
|
||||
}
|
||||
|
||||
/* Returns the number of iterations NITER of the loop around PBB at
|
||||
time(scattering) dimension TIME_DEPTH. */
|
||||
|
||||
void
|
||||
pbb_number_of_iterations_at_time (poly_bb_p pbb,
|
||||
graphite_dim_t time_depth,
|
||||
Value niter)
|
||||
{
|
||||
ppl_Pointset_Powerset_C_Polyhedron_t ext_domain, sctr;
|
||||
ppl_Linear_Expression_t le;
|
||||
ppl_dimension_type dim;
|
||||
|
||||
value_set_si (niter, -1);
|
||||
|
||||
/* Takes together domain and scattering polyhedrons, and composes
|
||||
them into the bigger polyhedron that has the following format:
|
||||
t0..t_{n-1} | l0..l_{nlcl-1} | i0..i_{niter-1} | g0..g_{nparm-1}.
|
||||
t0..t_{n-1} are time dimensions (scattering dimensions)
|
||||
l0..l_{nclc-1} are local variables in scatterin function
|
||||
i0..i_{niter-1} are original iteration variables
|
||||
g0..g_{nparam-1} are global parameters. */
|
||||
|
||||
ppl_new_Pointset_Powerset_C_Polyhedron_from_Pointset_Powerset_C_Polyhedron
|
||||
(&ext_domain, PBB_DOMAIN (pbb));
|
||||
ppl_insert_dimensions_pointset (ext_domain, 0,
|
||||
pbb_nb_scattering_transform (pbb)
|
||||
+ pbb_nb_local_vars (pbb));
|
||||
ppl_new_Pointset_Powerset_C_Polyhedron_from_C_Polyhedron (&sctr,
|
||||
PBB_TRANSFORMED_SCATTERING (pbb));
|
||||
ppl_Pointset_Powerset_C_Polyhedron_intersection_assign (sctr, ext_domain);
|
||||
|
||||
ppl_Pointset_Powerset_C_Polyhedron_space_dimension (sctr, &dim);
|
||||
ppl_new_Linear_Expression_with_dimension (&le, dim);
|
||||
ppl_set_coef (le, time_depth, 1);
|
||||
ppl_max_for_le_pointset (sctr, le, niter);
|
||||
|
||||
ppl_delete_Linear_Expression (le);
|
||||
ppl_delete_Pointset_Powerset_C_Polyhedron (sctr);
|
||||
ppl_delete_Pointset_Powerset_C_Polyhedron (ext_domain);
|
||||
}
|
||||
|
||||
#endif
|
||||
|
||||
|
||||
@ -307,6 +307,7 @@ extern void debug_iteration_domains (scop_p);
|
||||
extern bool scop_do_interchange (scop_p);
|
||||
extern bool scop_do_strip_mine (scop_p);
|
||||
extern void pbb_number_of_iterations (poly_bb_p, graphite_dim_t, Value);
|
||||
extern void pbb_number_of_iterations_at_time (poly_bb_p, graphite_dim_t, Value);
|
||||
|
||||
/* The index of the PBB. */
|
||||
|
||||
@ -372,6 +373,17 @@ pbb_nb_scattering_transform (const struct poly_bb *pbb)
|
||||
return PBB_NB_SCATTERING_TRANSFORM (pbb);
|
||||
}
|
||||
|
||||
/* The number of dynamic scattering dimensions in PBB. */
|
||||
|
||||
static inline graphite_dim_t
|
||||
pbb_nb_dynamic_scattering_transform (const struct poly_bb *pbb)
|
||||
{
|
||||
/* This function requires the 2d + 1 scattering format to be
|
||||
invariant during all transformations. */
|
||||
gcc_assert (PBB_NB_SCATTERING_TRANSFORM (pbb) % 2);
|
||||
return PBB_NB_SCATTERING_TRANSFORM (pbb) / 2;
|
||||
}
|
||||
|
||||
/* Returns the number of local variables used in the transformed
|
||||
scattering polyhedron of PBB. */
|
||||
|
||||
@ -480,6 +492,19 @@ psct_parameter_dim (poly_bb_p pbb, graphite_dim_t param)
|
||||
+ pbb_dim_iter_domain (pbb);
|
||||
}
|
||||
|
||||
/* The scattering dimension of PBB corresponding to the dynamic level
|
||||
LEVEL. */
|
||||
|
||||
static inline ppl_dimension_type
|
||||
psct_dynamic_dim (poly_bb_p pbb, graphite_dim_t level)
|
||||
{
|
||||
graphite_dim_t result;
|
||||
result = 1 + 2 * level;
|
||||
|
||||
gcc_assert (result < pbb_nb_scattering_transform (pbb));
|
||||
return result;
|
||||
}
|
||||
|
||||
/* Adds to the transformed scattering polyhedron of PBB a new local
|
||||
variable and returns its index. */
|
||||
|
||||
|
||||
Loading…
Reference in New Issue
Block a user