/* Conversion of SESE regions to Polyhedra.
- Copyright (C) 2009-2017 Free Software Foundation, Inc.
+ Copyright (C) 2009-2020 Free Software Foundation, Inc.
Contributed by Sebastian Pop <sebastian.pop@amd.com>.
This file is part of GCC.
#include "tree.h"
#include "gimple.h"
#include "ssa.h"
-#include "params.h"
#include "fold-const.h"
#include "gimple-iterator.h"
#include "gimplify.h"
#include <isl/constraint.h>
#include <isl/aff.h>
#include <isl/val.h>
-#include <isl/val_gmp.h>
#include "graphite.h"
-/* Assigns to RES the value of the INTEGER_CST T. */
-
-static inline void
-tree_int_to_gmp (tree t, mpz_t res)
-{
- wi::to_mpz (t, res, TYPE_SIGN (TREE_TYPE (t)));
-}
-
/* Return an isl identifier for the polyhedral basic block PBB. */
static isl_id *
isl_id_for_pbb (scop_p s, poly_bb_p pbb)
{
- char name[10];
+ char name[14];
snprintf (name, sizeof (name), "S_%d", pbb_index (pbb));
return isl_id_alloc (s->isl_context, name, pbb);
}
-#ifndef HAVE_ISL_OPTIONS_SET_SCHEDULE_SERIALIZE_SCCS
-/* Converts the STATIC_SCHEDULE of PBB into a scattering polyhedron.
- We generate SCATTERING_DIMENSIONS scattering dimensions.
-
- The scattering polyhedron consists of these dimensions: scattering,
- loop_iterators, parameters.
-
- Example:
-
- | scattering_dimensions = 5
- | nb_iterators = 1
- | scop_nb_params = 2
- |
- | Schedule:
- | i
- | 4 5
- |
- | Scattering polyhedron:
- |
- | scattering: {s1, s2, s3, s4, s5}
- | loop_iterators: {i}
- | parameters: {p1, p2}
- |
- | s1 s2 s3 s4 s5 i p1 p2 1
- | 1 0 0 0 0 0 0 0 -4 = 0
- | 0 1 0 0 0 -1 0 0 0 = 0
- | 0 0 1 0 0 0 0 0 -5 = 0 */
-
-static void
-build_pbb_scattering_polyhedrons (isl_aff *static_sched,
- poly_bb_p pbb)
-{
- isl_val *val;
-
- int scattering_dimensions = isl_set_dim (pbb->domain, isl_dim_set) * 2 + 1;
-
- isl_space *dc = isl_set_get_space (pbb->domain);
- isl_space *dm = isl_space_add_dims (isl_space_from_domain (dc),
- isl_dim_out, scattering_dimensions);
- pbb->schedule = isl_map_universe (dm);
-
- for (int i = 0; i < scattering_dimensions; i++)
- {
- /* Textual order inside this loop. */
- if ((i % 2) == 0)
- {
- isl_constraint *c = isl_equality_alloc
- (isl_local_space_from_space (isl_map_get_space (pbb->schedule)));
-
- val = isl_aff_get_coefficient_val (static_sched, isl_dim_in, i / 2);
- gcc_assert (val && isl_val_is_int (val));
-
- val = isl_val_neg (val);
- c = isl_constraint_set_constant_val (c, val);
- c = isl_constraint_set_coefficient_si (c, isl_dim_out, i, 1);
- pbb->schedule = isl_map_add_constraint (pbb->schedule, c);
- }
-
- /* Iterations of this loop. */
- else /* if ((i % 2) == 1) */
- {
- int loop = (i - 1) / 2;
- pbb->schedule = isl_map_equate (pbb->schedule, isl_dim_in, loop,
- isl_dim_out, i);
- }
- }
-
- /* Simplify the original schedule. */
- pbb->schedule = isl_map_coalesce (pbb->schedule);
-
- /* At the beginning, set the transformed schedule to the original. */
- pbb->transformed = isl_map_copy (pbb->schedule);
-}
-
-/* Build for BB the static schedule.
-
- The static schedule is a Dewey numbering of the abstract syntax
- tree: http://en.wikipedia.org/wiki/Dewey_Decimal_Classification
-
- The following example informally defines the static schedule:
-
- A
- for (i: ...)
- {
- for (j: ...)
- {
- B
- C
- }
-
- for (k: ...)
- {
- D
- E
- }
- }
- F
-
- Static schedules for A to F:
-
- DEPTH
- 0 1 2
- A 0
- B 1 0 0
- C 1 0 1
- D 1 1 0
- E 1 1 1
- F 2
-*/
-
-static void
-build_scop_scattering (scop_p scop)
-{
- gimple_poly_bb_p previous_gbb = NULL;
- isl_space *dc = isl_set_get_space (scop->param_context);
- isl_aff *static_sched;
-
- dc = isl_space_add_dims (dc, isl_dim_set, number_of_loops (cfun));
- static_sched = isl_aff_zero_on_domain (isl_local_space_from_space (dc));
-
- /* We have to start schedules at 0 on the first component and
- because we cannot compare_prefix_loops against a previous loop,
- prefix will be equal to zero, and that index will be
- incremented before copying. */
- static_sched = isl_aff_add_coefficient_si (static_sched, isl_dim_in, 0, -1);
-
- int i;
- poly_bb_p pbb;
- FOR_EACH_VEC_ELT (scop->pbbs, i, pbb)
- {
- gimple_poly_bb_p gbb = PBB_BLACK_BOX (pbb);
- int prefix = 0;
-
- if (previous_gbb)
- prefix = nb_common_loops (scop->scop_info->region, previous_gbb, gbb);
-
- previous_gbb = gbb;
-
- static_sched = isl_aff_add_coefficient_si (static_sched, isl_dim_in,
- prefix, 1);
- build_pbb_scattering_polyhedrons (static_sched, pbb);
- }
-
- isl_aff_free (static_sched);
-}
-#endif
-
static isl_pw_aff *extract_affine (scop_p, tree, __isl_take isl_space *space);
/* Extract an affine expression from the chain of recurrence E. */
static isl_id *
isl_id_for_ssa_name (scop_p s, tree e)
{
- char name1[10];
+ char name1[14];
snprintf (name1, sizeof (name1), "P_%d", SSA_NAME_VERSION (e));
return isl_id_alloc (s->isl_context, name1, e);
}
/* Extract an affine expression from the ssa_name E. */
static isl_pw_aff *
-extract_affine_name (scop_p s, tree e, __isl_take isl_space *space)
+extract_affine_name (int dimension, __isl_take isl_space *space)
{
- isl_id *id = isl_id_for_ssa_name (s, e);
- int dimension = isl_space_find_dim_by_id (space, isl_dim_param, id);
- isl_id_free (id);
isl_set *dom = isl_set_universe (isl_space_copy (space));
isl_aff *aff = isl_aff_zero_on_domain (isl_local_space_from_space (space));
aff = isl_aff_add_coefficient_si (aff, isl_dim_param, dimension, 1);
return isl_pw_aff_alloc (dom, aff);
}
+/* Convert WI to a isl_val with CTX. */
+
+static __isl_give isl_val *
+isl_val_int_from_wi (isl_ctx *ctx, const widest_int &wi)
+{
+ if (wi::neg_p (wi, SIGNED))
+ {
+ widest_int mwi = -wi;
+ return isl_val_neg (isl_val_int_from_chunks (ctx, mwi.get_len (),
+ sizeof (HOST_WIDE_INT),
+ mwi.get_val ()));
+ }
+ return isl_val_int_from_chunks (ctx, wi.get_len (), sizeof (HOST_WIDE_INT),
+ wi.get_val ());
+}
+
/* Extract an affine expression from the gmp constant G. */
static isl_pw_aff *
-extract_affine_gmp (mpz_t g, __isl_take isl_space *space)
+extract_affine_wi (const widest_int &g, __isl_take isl_space *space)
{
isl_local_space *ls = isl_local_space_from_space (isl_space_copy (space));
isl_aff *aff = isl_aff_zero_on_domain (ls);
isl_set *dom = isl_set_universe (space);
isl_ctx *ct = isl_aff_get_ctx (aff);
- isl_val *v = isl_val_int_from_gmp (ct, g);
+ isl_val *v = isl_val_int_from_wi (ct, g);
aff = isl_aff_add_constant_val (aff, v);
return isl_pw_aff_alloc (dom, aff);
static isl_pw_aff *
extract_affine_int (tree e, __isl_take isl_space *space)
{
- mpz_t g;
-
- mpz_init (g);
- tree_int_to_gmp (e, g);
- isl_pw_aff *res = extract_affine_gmp (g, space);
- mpz_clear (g);
-
+ isl_pw_aff *res = extract_affine_wi (wi::to_widest (e), space);
return res;
}
Otherwise returns -1. */
static inline int
-parameter_index_in_region_1 (tree name, sese_info_p region)
+parameter_index_in_region (tree name, sese_info_p region)
{
int i;
tree p;
-
- gcc_assert (TREE_CODE (name) == SSA_NAME);
-
FOR_EACH_VEC_ELT (region->params, i, p)
if (p == name)
return i;
-
return -1;
}
return NULL;
}
+ tree type = TREE_TYPE (e);
switch (TREE_CODE (e))
{
case POLYNOMIAL_CHREC:
res = extract_affine_mul (s, e, space);
break;
- case PLUS_EXPR:
case POINTER_PLUS_EXPR:
+ {
+ lhs = extract_affine (s, TREE_OPERAND (e, 0), isl_space_copy (space));
+ /* The RHS of a pointer-plus expression is to be interpreted
+ as signed value. Try to look through a sign-changing conversion
+ first. */
+ tree tem = TREE_OPERAND (e, 1);
+ STRIP_NOPS (tem);
+ rhs = extract_affine (s, tem, space);
+ if (TYPE_UNSIGNED (TREE_TYPE (tem)))
+ rhs = wrap (rhs, TYPE_PRECISION (type) - 1);
+ res = isl_pw_aff_add (lhs, rhs);
+ break;
+ }
+
+ case PLUS_EXPR:
lhs = extract_affine (s, TREE_OPERAND (e, 0), isl_space_copy (space));
rhs = extract_affine (s, TREE_OPERAND (e, 1), space);
res = isl_pw_aff_add (lhs, rhs);
res = isl_pw_aff_sub (lhs, rhs);
break;
- case NEGATE_EXPR:
case BIT_NOT_EXPR:
+ lhs = extract_affine (s, integer_minus_one_node, isl_space_copy (space));
+ rhs = extract_affine (s, TREE_OPERAND (e, 0), space);
+ res = isl_pw_aff_sub (lhs, rhs);
+ /* We need to always wrap the result of a bitwise operation. */
+ return wrap (res, TYPE_PRECISION (type) - (TYPE_UNSIGNED (type) ? 0 : 1));
+
+ case NEGATE_EXPR:
lhs = extract_affine (s, TREE_OPERAND (e, 0), isl_space_copy (space));
rhs = extract_affine (s, integer_minus_one_node, space);
res = isl_pw_aff_mul (lhs, rhs);
break;
case SSA_NAME:
- gcc_assert (-1 != parameter_index_in_region_1 (e, s->scop_info)
- || !invariant_in_sese_p_rec (e, s->scop_info->region, NULL));
- res = extract_affine_name (s, e, space);
- break;
+ {
+ gcc_assert (! defined_in_sese_p (e, s->scop_info->region));
+ int dim = parameter_index_in_region (e, s->scop_info);
+ gcc_assert (dim != -1);
+ /* No need to wrap a parameter. */
+ return extract_affine_name (dim, space);
+ }
case INTEGER_CST:
res = extract_affine_int (e, space);
return res;
CASE_CONVERT:
+ {
+ tree itype = TREE_TYPE (TREE_OPERAND (e, 0));
+ res = extract_affine (s, TREE_OPERAND (e, 0), space);
+ /* Signed values, even if overflow is undefined, get modulo-reduced.
+ But only if not all values of the old type fit in the new. */
+ if (! TYPE_UNSIGNED (type)
+ && ((TYPE_UNSIGNED (itype)
+ && TYPE_PRECISION (type) <= TYPE_PRECISION (itype))
+ || TYPE_PRECISION (type) < TYPE_PRECISION (itype)))
+ res = wrap (res, TYPE_PRECISION (type) - 1);
+ else if (TYPE_UNSIGNED (type)
+ && (!TYPE_UNSIGNED (itype)
+ || TYPE_PRECISION (type) < TYPE_PRECISION (itype)))
+ res = wrap (res, TYPE_PRECISION (type));
+ return res;
+ }
+
case NON_LVALUE_EXPR:
res = extract_affine (s, TREE_OPERAND (e, 0), space);
break;
break;
}
- tree type = TREE_TYPE (e);
- if (TYPE_UNSIGNED (type))
+ /* For all wrapping arithmetic wrap the result. */
+ if (TYPE_OVERFLOW_WRAPS (type))
res = wrap (res, TYPE_PRECISION (type));
return res;
/* Returns a linear expression for tree T evaluated in PBB. */
static isl_pw_aff *
-create_pw_aff_from_tree (poly_bb_p pbb, tree t)
+create_pw_aff_from_tree (poly_bb_p pbb, loop_p loop, tree t)
{
scop_p scop = PBB_SCOP (pbb);
- t = scalar_evolution_in_region (scop->scop_info->region, pbb_loop (pbb), t);
+ t = cached_scalar_evolution_in_region (scop->scop_info->region, loop, t);
gcc_assert (!chrec_contains_undetermined (t));
gcc_assert (!automatically_generated_chrec_p (t));
static void
add_condition_to_pbb (poly_bb_p pbb, gcond *stmt, enum tree_code code)
{
- isl_pw_aff *lhs = create_pw_aff_from_tree (pbb, gimple_cond_lhs (stmt));
- isl_pw_aff *rhs = create_pw_aff_from_tree (pbb, gimple_cond_rhs (stmt));
+ loop_p loop = gimple_bb (stmt)->loop_father;
+ isl_pw_aff *lhs = create_pw_aff_from_tree (pbb, loop, gimple_cond_lhs (stmt));
+ isl_pw_aff *rhs = create_pw_aff_from_tree (pbb, loop, gimple_cond_rhs (stmt));
isl_set *cond;
switch (code)
of P. */
static void
-add_param_constraints (scop_p scop, graphite_dim_t p)
+add_param_constraints (scop_p scop, graphite_dim_t p, tree parameter)
{
- tree parameter = scop->scop_info->params[p];
tree type = TREE_TYPE (parameter);
- tree lb = NULL_TREE;
- tree ub = NULL_TREE;
+ wide_int min, max;
- if (POINTER_TYPE_P (type) || !TYPE_MIN_VALUE (type))
- lb = lower_bound_in_type (type, type);
- else
- lb = TYPE_MIN_VALUE (type);
+ gcc_assert (INTEGRAL_TYPE_P (type) || POINTER_TYPE_P (type));
- if (POINTER_TYPE_P (type) || !TYPE_MAX_VALUE (type))
- ub = upper_bound_in_type (type, type);
+ if (INTEGRAL_TYPE_P (type)
+ && get_range_info (parameter, &min, &max) == VR_RANGE)
+ ;
else
- ub = TYPE_MAX_VALUE (type);
-
- if (lb)
{
- isl_space *space = isl_set_get_space (scop->param_context);
- isl_constraint *c;
- mpz_t g;
- isl_val *v;
-
- c = isl_inequality_alloc (isl_local_space_from_space (space));
- mpz_init (g);
- tree_int_to_gmp (lb, g);
- v = isl_val_int_from_gmp (scop->isl_context, g);
- v = isl_val_neg (v);
- mpz_clear (g);
- c = isl_constraint_set_constant_val (c, v);
- c = isl_constraint_set_coefficient_si (c, isl_dim_param, p, 1);
-
- scop->param_context = isl_set_coalesce
- (isl_set_add_constraint (scop->param_context, c));
+ min = wi::min_value (TYPE_PRECISION (type), TYPE_SIGN (type));
+ max = wi::max_value (TYPE_PRECISION (type), TYPE_SIGN (type));
}
- if (ub)
- {
- isl_space *space = isl_set_get_space (scop->param_context);
- isl_constraint *c;
- mpz_t g;
- isl_val *v;
-
- c = isl_inequality_alloc (isl_local_space_from_space (space));
-
- mpz_init (g);
- tree_int_to_gmp (ub, g);
- v = isl_val_int_from_gmp (scop->isl_context, g);
- mpz_clear (g);
- c = isl_constraint_set_constant_val (c, v);
- c = isl_constraint_set_coefficient_si (c, isl_dim_param, p, -1);
-
- scop->param_context = isl_set_coalesce
- (isl_set_add_constraint (scop->param_context, c));
- }
+ isl_space *space = isl_set_get_space (scop->param_context);
+ isl_constraint *c = isl_inequality_alloc (isl_local_space_from_space (space));
+ isl_val *v = isl_val_int_from_wi (scop->isl_context,
+ widest_int::from (min, TYPE_SIGN (type)));
+ v = isl_val_neg (v);
+ c = isl_constraint_set_constant_val (c, v);
+ c = isl_constraint_set_coefficient_si (c, isl_dim_param, p, 1);
+ scop->param_context = isl_set_coalesce
+ (isl_set_add_constraint (scop->param_context, c));
+
+ space = isl_set_get_space (scop->param_context);
+ c = isl_inequality_alloc (isl_local_space_from_space (space));
+ v = isl_val_int_from_wi (scop->isl_context,
+ widest_int::from (max, TYPE_SIGN (type)));
+ c = isl_constraint_set_constant_val (c, v);
+ c = isl_constraint_set_coefficient_si (c, isl_dim_param, p, -1);
+ scop->param_context = isl_set_coalesce
+ (isl_set_add_constraint (scop->param_context, c));
}
/* Add a constrain to the ACCESSES polyhedron for the alias set of
return isl_map_add_constraint (acc, c);
}
-/* Add a constrain to the ACCESSES polyhedron for the alias set of
- data reference DR. ACCESSP_NB_DIMS is the dimension of the
- ACCESSES polyhedron, DOM_NB_DIMS is the dimension of the iteration
- domain. */
-
-static isl_map *
-add_scalar_version_numbers (isl_map *acc, tree var)
-{
- isl_constraint *c = isl_equality_alloc
- (isl_local_space_from_space (isl_map_get_space (acc)));
- int max_arrays = PARAM_VALUE (PARAM_GRAPHITE_MAX_ARRAYS_PER_SCOP);
- /* Each scalar variables has a unique alias set number starting from
- max_arrays. */
- c = isl_constraint_set_constant_si (c, -max_arrays - SSA_NAME_VERSION (var));
- c = isl_constraint_set_coefficient_si (c, isl_dim_out, 0, 1);
-
- return isl_map_add_constraint (acc, c);
-}
-
/* Assign the affine expression INDEX to the output dimension POS of
MAP and return the result. */
build_poly_sr_1 (poly_bb_p pbb, gimple *stmt, tree var, enum poly_dr_type kind,
isl_map *acc, isl_set *subscript_sizes)
{
- int max_arrays = PARAM_VALUE (PARAM_GRAPHITE_MAX_ARRAYS_PER_SCOP);
+ scop_p scop = PBB_SCOP (pbb);
/* Each scalar variables has a unique alias set number starting from
- max_arrays. */
+ the maximum alias set assigned to a dr. */
+ int alias_set = scop->max_alias_set + SSA_NAME_VERSION (var);
subscript_sizes = isl_set_fix_si (subscript_sizes, isl_dim_set, 0,
- max_arrays + SSA_NAME_VERSION (var));
+ alias_set);
- new_poly_dr (pbb, stmt, kind, add_scalar_version_numbers (acc, var),
+ /* Add a constrain to the ACCESSES polyhedron for the alias set of
+ data reference DR. */
+ isl_constraint *c
+ = isl_equality_alloc (isl_local_space_from_space (isl_map_get_space (acc)));
+ c = isl_constraint_set_constant_si (c, -alias_set);
+ c = isl_constraint_set_coefficient_si (c, isl_dim_out, 0, 1);
+
+ new_poly_dr (pbb, stmt, kind, isl_map_add_constraint (acc, c),
subscript_sizes);
}
isl_local_space *ls = isl_local_space_from_space (space);
isl_constraint *c = isl_inequality_alloc (ls);
c = isl_constraint_set_coefficient_si (c, isl_dim_set, loop_index, -1);
- mpz_t g;
- mpz_init (g);
- tree_int_to_gmp (nb_iters, g);
- isl_val *v = isl_val_int_from_gmp (scop->isl_context, g);
- mpz_clear (g);
+ isl_val *v
+ = isl_val_int_from_wi (scop->isl_context, wi::to_widest (nb_iters));
c = isl_constraint_set_constant_val (c, v);
return isl_set_add_constraint (domain, c);
}
/* loop_i <= expr_nb_iters */
gcc_assert (!chrec_contains_undetermined (nb_iters));
- nb_iters = scalar_evolution_in_region (region, loop, nb_iters);
+ nb_iters = cached_scalar_evolution_in_region (region, loop, nb_iters);
gcc_assert (!chrec_contains_undetermined (nb_iters));
isl_pw_aff *aff_nb_iters = extract_affine (scop, nb_iters,
/* NIT is an upper bound to NB_ITERS: "NIT >= NB_ITERS", although we
do not know whether the loop executes at least once. */
- mpz_t g;
- mpz_init (g);
- wi::to_mpz (nit, g, SIGNED);
- mpz_sub_ui (g, g, 1);
+ --nit;
- isl_pw_aff *approx = extract_affine_gmp (g, isl_space_copy (space));
+ isl_pw_aff *approx = extract_affine_wi (nit, isl_space_copy (space));
isl_set *x = isl_pw_aff_ge_set (approx, aff_nb_iters);
x = isl_set_project_out (x, isl_dim_set, 0,
isl_set_dim (x, isl_dim_set));
ls = isl_local_space_from_space (space);
c = isl_inequality_alloc (ls);
c = isl_constraint_set_coefficient_si (c, isl_dim_set, loop_index, -1);
- isl_val *v = isl_val_int_from_gmp (scop->isl_context, g);
- mpz_clear (g);
+ isl_val *v = isl_val_int_from_wi (scop->isl_context, nit);
c = isl_constraint_set_constant_val (c, v);
if (dump_file)
loop_p loop = pbb_loop (pbb);
if (current == loop)
{
-#ifdef HAVE_ISL_OPTIONS_SET_SCHEDULE_SERIALIZE_SCCS
pbb->iterators = isl_set_copy (domain);
-#endif
pbb->domain = isl_set_copy (domain);
pbb->domain = isl_set_set_tuple_id (pbb->domain,
isl_id_for_pbb (scop, pbb));
scop->param_context = isl_set_universe (space);
- graphite_dim_t p;
- for (p = 0; p < nbp; p++)
- add_param_constraints (scop, p);
+ FOR_EACH_VEC_ELT (region->params, i, e)
+ add_param_constraints (scop, i, e);
}
-#ifdef HAVE_ISL_OPTIONS_SET_SCHEDULE_SERIALIZE_SCCS
-
/* Return true when loop A is nested in loop B. */
static bool
if (empty < 0 || empty)
return empty < 0 ? isl_schedule_free (schedule) : schedule;
+ isl_union_set *domain = isl_schedule_get_domain (schedule);
+ /* We cannot apply an empty domain to pbbs in this loop so return early. */
+ if (isl_union_set_is_empty (domain))
+ {
+ isl_union_set_free (domain);
+ return schedule;
+ }
+
isl_space *space = isl_set_get_space (iterators);
int loop_index = isl_space_dim (space, isl_dim_set) - 1;
prefix = isl_multi_aff_set_tuple_id (prefix, isl_dim_out, label);
int n = isl_multi_aff_dim (prefix, isl_dim_in);
- isl_union_set *domain = isl_schedule_get_domain (schedule);
isl_multi_union_pw_aff *mupa = outer_projection_mupa (domain, n);
mupa = isl_multi_union_pw_aff_apply_multi_aff (mupa, prefix);
return isl_schedule_insert_partial_schedule (schedule, mupa);
/* Build the schedule of the SCOP. */
-static bool
+static void
build_original_schedule (scop_p scop)
{
int i = 0;
fprintf (dump_file, "[sese-to-poly] original schedule:\n");
print_isl_schedule (dump_file, scop->original_schedule);
}
- if (!scop->original_schedule)
- return false;
- return true;
}
-#endif
-
/* Builds the polyhedral representation for a SESE region. */
bool
build_poly_scop (scop_p scop)
{
+ int old_err = isl_options_get_on_error (scop->isl_context);
+ isl_options_set_on_error (scop->isl_context, ISL_ON_ERROR_CONTINUE);
+
build_scop_context (scop);
unsigned i = 0;
i = build_iteration_domains (scop, scop->param_context, i, NULL);
build_scop_drs (scop);
-#ifdef HAVE_ISL_OPTIONS_SET_SCHEDULE_SERIALIZE_SCCS
build_original_schedule (scop);
-#else
- build_scop_scattering (scop);
-#endif
- return true;
+
+ enum isl_error err = isl_ctx_last_error (scop->isl_context);
+ isl_ctx_reset_error (scop->isl_context);
+ isl_options_set_on_error (scop->isl_context, old_err);
+ if (err != isl_error_none
+ && dump_enabled_p ())
+ dump_printf (MSG_MISSED_OPTIMIZATION,
+ "ISL error while building poly scop\n");
+
+ return err == isl_error_none;
}
#endif /* HAVE_isl */
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