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graphite-poly.c (pbb_number_of_iterations_at_time): Cleanup comments.

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2009-10-14  Sebastian Pop  <sebastian.pop@amd.com>

	* graphite-poly.c (pbb_number_of_iterations_at_time): Cleanup comments.

From-SVN: r154584
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Sebastian Pop 2009-11-25 05:05:22 +00:00 committed by Sebastian Pop
parent b0c7a278f4
commit 2b7c09a8b3
2 changed files with 21 additions and 9 deletions
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gcc/ChangeLog.graphite
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@ -1,3 +1,7 @@
2009-10-14 Sebastian Pop <sebastian.pop@amd.com>
* graphite-poly.c (pbb_number_of_iterations_at_time): Cleanup comments.
2009-10-14 Konrad Trifunovic <konrad.trifunovic@gmail.com>
Sebastian Pop <sebastian.pop@amd.com>

26
gcc/graphite-poly.c
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@ -790,28 +790,36 @@ pbb_number_of_iterations_at_time (poly_bb_p pbb,
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 scattering function
i0..i_{niter-1} are original iteration variables
g0..g_{nparam-1} are global parameters. */
t0..t_{n-1} | l0..l_{nlcl-1} | i0..i_{niter-1} | g0..g_{nparm-1}
where
| t0..t_{n-1} are time dimensions (scattering dimensions)
| l0..l_{nclc-1} are local variables in scattering function
| i0..i_{niter-1} are original iteration variables
| g0..g_{nparam-1} are global parameters. */
ppl_new_Pointset_Powerset_C_Polyhedron_from_C_Polyhedron (&sctr,
PBB_TRANSFORMED_SCATTERING (pbb));
/* Extend the iteration domain with the scattering dimensions:
0..0 | 0..0 | i0..i_{niter-1} | g0..g_{nparm-1}. */
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));
/* Add to sctr the extended domain. */
ppl_Pointset_Powerset_C_Polyhedron_intersection_assign (sctr, ext_domain);
/* Extract the number of iterations. */
ppl_Pointset_Powerset_C_Polyhedron_space_dimension (sctr, &dim);
ppl_new_Linear_Expression_with_dimension (&le, dim);
ppl_set_coef (le, time_depth, 1);
value_set_si (niter, -1);
ppl_max_for_le_pointset (sctr, le, niter);
ppl_delete_Linear_Expression (le);