if (!PBB_TRANSFORMED (pbb))
return;
- fprintf (file, "scattering bb_%d (\n", GBB_BB (PBB_BLACK_BOX (pbb))->index);
+ fprintf (file, "scattering bb_%d (\n", pbb_index (pbb));
fprintf (file, "# eq");
for (i = 0; i < pbb_nb_scattering_transform (pbb); i++)
{
bool transform_done = false;
- gcc_assert (graphite_legal_transform (scop));
-
/* Generate code even if we did not apply any real transformation.
This also allows to check the performance for the identity
transformation: GIMPLE -> GRAPHITE -> GIMPLE
transform_done = true;
if (flag_loop_block)
- gcc_unreachable (); /* Not yet supported. */
-
- if (flag_loop_strip_mine)
- transform_done |= scop_do_strip_mine (scop);
+ {
+ transform_done |= scop_do_strip_mine (scop);
+ transform_done |= scop_do_interchange (scop);
+ }
+ else
+ {
+ if (flag_loop_strip_mine)
+ transform_done |= scop_do_strip_mine (scop);
- if (flag_loop_interchange)
- transform_done |= scop_do_interchange (scop);
+ if (flag_loop_interchange)
+ transform_done |= scop_do_interchange (scop);
+ }
return transform_done;
}
+/* Returns true when it PDR1 is a duplicate of PDR2: same PBB, and
+ their ACCESSES, TYPE, and NB_SUBSCRIPTS are the same. */
+
+static inline bool
+can_collapse_pdrs (poly_dr_p pdr1, poly_dr_p pdr2)
+{
+ bool res;
+ ppl_Pointset_Powerset_C_Polyhedron_t af1, af2, diff;
+
+ if (PDR_PBB (pdr1) != PDR_PBB (pdr2)
+ || PDR_NB_SUBSCRIPTS (pdr1) != PDR_NB_SUBSCRIPTS (pdr2)
+ || PDR_TYPE (pdr1) != PDR_TYPE (pdr2))
+ return false;
+
+ af1 = PDR_ACCESSES (pdr1);
+ af2 = PDR_ACCESSES (pdr2);
+ ppl_new_Pointset_Powerset_C_Polyhedron_from_Pointset_Powerset_C_Polyhedron
+ (&diff, af1);
+ ppl_Pointset_Powerset_C_Polyhedron_difference_assign (diff, af2);
+
+ res = ppl_Pointset_Powerset_C_Polyhedron_is_empty (diff);
+ ppl_delete_Pointset_Powerset_C_Polyhedron (diff);
+ return res;
+}
+
+/* Removes duplicated data references in PBB. */
+
+void
+pbb_remove_duplicate_pdrs (poly_bb_p pbb)
+{
+ int i, j;
+ poly_dr_p pdr1, pdr2;
+ unsigned n = VEC_length (poly_dr_p, PBB_DRS (pbb));
+ VEC (poly_dr_p, heap) *collapsed = VEC_alloc (poly_dr_p, heap, n);
+
+ for (i = 0; VEC_iterate (poly_dr_p, PBB_DRS (pbb), i, pdr1); i++)
+ for (j = 0; VEC_iterate (poly_dr_p, collapsed, j, pdr2); j++)
+ if (!can_collapse_pdrs (pdr1, pdr2))
+ VEC_quick_push (poly_dr_p, collapsed, pdr1);
+
+ VEC_free (poly_dr_p, heap, collapsed);
+ PBB_PDR_DUPLICATES_REMOVED (pbb) = true;
+}
+
/* Create a new polyhedral data reference and add it to PBB. It is
defined by its ACCESSES, its TYPE, and the number of subscripts
NB_SUBSCRIPTS. */
void
-new_poly_dr (poly_bb_p pbb,
+new_poly_dr (poly_bb_p pbb, int dr_base_object_set,
ppl_Pointset_Powerset_C_Polyhedron_t accesses,
- enum POLY_DR_TYPE type, void *cdr, int nb_subscripts)
+ enum poly_dr_type type, void *cdr, graphite_dim_t nb_subscripts)
{
- poly_dr_p pdr = XNEW (struct poly_dr);
static int id = 0;
+ poly_dr_p pdr = XNEW (struct poly_dr);
PDR_ID (pdr) = id++;
+ PDR_BASE_OBJECT_SET (pdr) = dr_base_object_set;
+ PDR_NB_REFS (pdr) = 1;
PDR_PBB (pdr) = pbb;
PDR_ACCESSES (pdr) = accesses;
PDR_TYPE (pdr) = type;
/* Create a new polyhedral black box. */
void
-new_poly_bb (scop_p scop, void *black_box)
+new_poly_bb (scop_p scop, void *black_box, bool reduction)
{
poly_bb_p pbb = XNEW (struct poly_bb);
PBB_SAVED (pbb) = NULL;
PBB_ORIGINAL (pbb) = NULL;
PBB_DRS (pbb) = VEC_alloc (poly_dr_p, heap, 3);
+ PBB_IS_REDUCTION (pbb) = reduction;
+ PBB_PDR_DUPLICATES_REMOVED (pbb) = false;
VEC_safe_push (poly_bb_p, heap, SCOP_BBS (scop), pbb);
}
{
scop_p scop = XNEW (struct scop);
- SCOP_DEP_GRAPH (scop) = NULL;
SCOP_CONTEXT (scop) = NULL;
scop_set_region (scop, region);
SCOP_BBS (scop) = VEC_alloc (poly_bb_p, heap, 3);
SCOP_ORIGINAL_PDDRS (scop) = htab_create (10, hash_poly_ddr_p,
eq_poly_ddr_p, free_poly_ddr);
+ SCOP_ORIGINAL_SCHEDULE (scop) = NULL;
+ SCOP_TRANSFORMED_SCHEDULE (scop) = NULL;
+ SCOP_SAVED_SCHEDULE (scop) = NULL;
return scop;
}
ppl_delete_Pointset_Powerset_C_Polyhedron (SCOP_CONTEXT (scop));
htab_delete (SCOP_ORIGINAL_PDDRS (scop));
+ free_lst (SCOP_ORIGINAL_SCHEDULE (scop));
+ free_lst (SCOP_TRANSFORMED_SCHEDULE (scop));
+ free_lst (SCOP_SAVED_SCHEDULE (scop));
XDELETE (scop);
}
void
print_pbb (FILE *file, poly_bb_p pbb)
{
- fprintf (file, "pbb_%d (\n", GBB_BB (PBB_BLACK_BOX (pbb))->index);
+ fprintf (file, "pbb_%d (\n", pbb_index (pbb));
dump_gbb_conditions (file, PBB_BLACK_BOX (pbb));
dump_gbb_cases (file, PBB_BLACK_BOX (pbb));
print_pdrs (file, pbb);
for (i = 0; VEC_iterate (poly_bb_p, SCOP_BBS (scop), i, pbb); i++)
print_pbb (file, pbb);
+ fprintf (file, "original_lst (\n");
+ print_lst (file, SCOP_ORIGINAL_SCHEDULE (scop), 0);
+ fprintf (file, ")\n");
+
+ fprintf (file, "transformed_lst (\n");
+ print_lst (file, SCOP_TRANSFORMED_SCHEDULE (scop), 0);
+ fprintf (file, ")\n");
+
fprintf (file, ")\n");
}
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;
+
+ /* 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}
+
+ 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));
+
+ /* 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);
+ ppl_delete_Pointset_Powerset_C_Polyhedron (sctr);
+ ppl_delete_Pointset_Powerset_C_Polyhedron (ext_domain);
+}
+
+/* Translates LOOP to LST. */
+
+static lst_p
+loop_to_lst (loop_p loop, VEC (poly_bb_p, heap) *bbs, int *i)
+{
+ poly_bb_p pbb;
+ VEC (lst_p, heap) *seq = VEC_alloc (lst_p, heap, 5);
+
+ for (; VEC_iterate (poly_bb_p, bbs, *i, pbb); (*i)++)
+ {
+ lst_p stmt;
+ basic_block bb = GBB_BB (PBB_BLACK_BOX (pbb));
+
+ if (bb->loop_father == loop)
+ stmt = new_lst_stmt (pbb);
+ else if (flow_bb_inside_loop_p (loop, bb))
+ {
+ loop_p next = loop->inner;
+
+ while (next && !flow_bb_inside_loop_p (next, bb))
+ next = next->next;
+
+ stmt = loop_to_lst (next, bbs, i);
+ }
+ else
+ {
+ (*i)--;
+ return new_lst_loop (seq);
+ }
+
+ VEC_safe_push (lst_p, heap, seq, stmt);
+ }
+
+ return new_lst_loop (seq);
+}
+
+/* Reads the original scattering of the SCOP and returns an LST
+ representing it. */
+
+void
+scop_to_lst (scop_p scop)
+{
+ lst_p res;
+ int i, n = VEC_length (poly_bb_p, SCOP_BBS (scop));
+ VEC (lst_p, heap) *seq = VEC_alloc (lst_p, heap, 5);
+ sese region = SCOP_REGION (scop);
+
+ for (i = 0; i < n; i++)
+ {
+ poly_bb_p pbb = VEC_index (poly_bb_p, SCOP_BBS (scop), i);
+ loop_p loop = outermost_loop_in_sese (region, GBB_BB (PBB_BLACK_BOX (pbb)));
+
+ if (loop_in_sese_p (loop, region))
+ res = loop_to_lst (loop, SCOP_BBS (scop), &i);
+ else
+ res = new_lst_stmt (pbb);
+
+ VEC_safe_push (lst_p, heap, seq, res);
+ }
+
+ res = new_lst_loop (seq);
+ SCOP_ORIGINAL_SCHEDULE (scop) = res;
+ SCOP_TRANSFORMED_SCHEDULE (scop) = copy_lst (res);
+}
+
+/* Print LST to FILE with INDENT spaces of indentation. */
+
+void
+print_lst (FILE *file, lst_p lst, int indent)
+{
+ if (!lst)
+ return;
+
+ indent_to (file, indent);
+
+ if (LST_LOOP_P (lst))
+ {
+ int i;
+ lst_p l;
+
+ if (LST_LOOP_FATHER (lst))
+ fprintf (file, "%d (loop", lst_dewey_number (lst));
+ else
+ fprintf (file, "(root");
+
+ for (i = 0; VEC_iterate (lst_p, LST_SEQ (lst), i, l); i++)
+ print_lst (file, l, indent + 2);
+
+ fprintf (file, ")");
+ }
+ else
+ fprintf (file, "%d stmt_%d", lst_dewey_number (lst), pbb_index (LST_PBB (lst)));
+}
+
+/* Print LST to STDERR. */
+
+void
+debug_lst (lst_p lst)
+{
+ print_lst (stderr, lst, 0);
+}
+
+/* Pretty print to FILE the loop statement tree LST in DOT format. */
+
+static void
+dot_lst_1 (FILE *file, lst_p lst)
+{
+ if (!lst)
+ return;
+
+ if (LST_LOOP_P (lst))
+ {
+ int i;
+ lst_p l;
+
+ if (!LST_LOOP_FATHER (lst))
+ fprintf (file, "L -> L_%d_%d\n",
+ lst_depth (lst),
+ lst_dewey_number (lst));
+ else
+ fprintf (file, "L_%d_%d -> L_%d_%d\n",
+ lst_depth (LST_LOOP_FATHER (lst)),
+ lst_dewey_number (LST_LOOP_FATHER (lst)),
+ lst_depth (lst),
+ lst_dewey_number (lst));
+
+ for (i = 0; VEC_iterate (lst_p, LST_SEQ (lst), i, l); i++)
+ dot_lst_1 (file, l);
+ }
+
+ else
+ fprintf (file, "L_%d_%d -> S_%d\n",
+ lst_depth (LST_LOOP_FATHER (lst)),
+ lst_dewey_number (LST_LOOP_FATHER (lst)),
+ pbb_index (LST_PBB (lst)));
+
+}
+
+/* Display the LST using dotty. */
+
+void
+dot_lst (lst_p lst)
+{
+ /* When debugging, enable the following code. This cannot be used
+ in production compilers because it calls "system". */
+#if 0
+ int x;
+ FILE *stream = fopen ("/tmp/lst.dot", "w");
+ gcc_assert (stream);
+
+ fputs ("digraph all {\n", stream);
+ dot_lst_1 (stream, lst);
+ fputs ("}\n\n", stream);
+ fclose (stream);
+
+ x = system ("dotty /tmp/lst.dot");
+#else
+ fputs ("digraph all {\n", stderr);
+ dot_lst_1 (stderr, lst);
+ fputs ("}\n\n", stderr);
+
+#endif
+}
+
#endif
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