Sven Verdoolaege [Wed, 18 Mar 2009 16:35:41 +0000 (17:35 +0100)]
add isl_map_implicit_equalities
Sven Verdoolaege [Wed, 18 Mar 2009 12:09:24 +0000 (13:09 +0100)]
add isl_basic_set_free_equality
Sven Verdoolaege [Tue, 10 Mar 2009 12:46:08 +0000 (13:46 +0100)]
isl_map_convex_hull: mark result as not having any implicit equalities
Sven Verdoolaege [Tue, 17 Mar 2009 13:46:50 +0000 (14:46 +0100)]
convex_hull: coalesce set first
Sven Verdoolaege [Mon, 16 Mar 2009 10:58:57 +0000 (11:58 +0100)]
add isl_set_coalesce
Sven Verdoolaege [Fri, 20 Mar 2009 15:21:58 +0000 (16:21 +0100)]
isl_input_omega.c: basic_map_read: accept "+" in constraints
Sven Verdoolaege [Mon, 16 Mar 2009 10:55:08 +0000 (11:55 +0100)]
add isl_basic_set_alloc_div
Sven Verdoolaege [Sun, 15 Mar 2009 21:21:40 +0000 (22:21 +0100)]
add isl_set_align_divs
Sven Verdoolaege [Sat, 14 Mar 2009 12:03:52 +0000 (13:03 +0100)]
uset_affine_hull: ignore directions in affine hull of recession cone
Sven Verdoolaege [Wed, 18 Mar 2009 16:34:58 +0000 (17:34 +0100)]
isl_basic_map_implicit_equalities: perform Gaussian elimination on result
Sven Verdoolaege [Fri, 13 Mar 2009 23:41:10 +0000 (00:41 +0100)]
isl_affine_hull.c: outside_point: check for obvious candidate first
Sven Verdoolaege [Fri, 13 Mar 2009 23:40:21 +0000 (00:40 +0100)]
privately export isl_basic_set_contains
Sven Verdoolaege [Fri, 13 Mar 2009 23:39:50 +0000 (00:39 +0100)]
isl_ctx: add negone
Sven Verdoolaege [Fri, 13 Mar 2009 20:19:36 +0000 (21:19 +0100)]
isl_vec_dump: handle NULL vec
Sven Verdoolaege [Wed, 18 Mar 2009 18:56:55 +0000 (19:56 +0100)]
isl_affine_hull.c: extract uset_affine_hull
Sven Verdoolaege [Thu, 12 Mar 2009 13:44:21 +0000 (14:44 +0100)]
isl_mat_transpose: handle non-rectangular matrices
Sven Verdoolaege [Wed, 11 Mar 2009 11:42:27 +0000 (12:42 +0100)]
isl_map_simple_hull: compute affine hull before aligning divs
Computing the affine hull may change the internal representation.
In particular, it may simplify div constraints that are added
during the alignment to constraints that did not appear in the
original set and we do not want to introduce such constraints
in the simple hull.
Sven Verdoolaege [Wed, 11 Mar 2009 09:43:38 +0000 (10:43 +0100)]
isl_map_simple_hull: mark result as not having any implicit equalities
Sven Verdoolaege [Wed, 11 Mar 2009 08:10:07 +0000 (09:10 +0100)]
add isl_set_bounded_simple_hull
Sven Verdoolaege [Tue, 10 Mar 2009 12:45:31 +0000 (13:45 +0100)]
isl_map_affine_hull: detect equalities of integer affine hull before cowing
Sven Verdoolaege [Tue, 10 Mar 2009 12:29:41 +0000 (13:29 +0100)]
isl_basic_map_dup: copy flags of original to duplicate
Before, the copied flags would get removed by the subsequent dup_constraints.
Some other code depended on isl_basic_map_cow clearing all flags and
failed to clear some flags.
Sven Verdoolaege [Tue, 10 Mar 2009 10:06:43 +0000 (11:06 +0100)]
isl_basic_map_extend_dim: move responsibility of cow'ing to the caller
Some callers, notably isl_basic_map_detect_equalities, want to
extend the basic map to add equalities that are implicit to the
basic map. These equalities should be added to all copies,
so we definitely do not want to cow in such cases.
Sven Verdoolaege [Tue, 10 Mar 2009 09:51:09 +0000 (10:51 +0100)]
isl_basic_map_extend_dim: only extend constraint matrix if needed
Sven Verdoolaege [Sun, 8 Mar 2009 14:09:50 +0000 (15:09 +0100)]
isl_solve_lp: use tableaus instead of calling piplib (by default)
Sven Verdoolaege [Sat, 7 Mar 2009 22:24:40 +0000 (23:24 +0100)]
isl_solve_lp: accept affine object function instead of linear function
Sven Verdoolaege [Sat, 7 Mar 2009 13:19:31 +0000 (14:19 +0100)]
isl_map_simple_hull: use hash tables and tableaus
Sven Verdoolaege [Fri, 6 Mar 2009 16:59:33 +0000 (17:59 +0100)]
isl_convex_hull.c: extract out uset_simple_hull
Sven Verdoolaege [Tue, 3 Mar 2009 20:43:36 +0000 (21:43 +0100)]
isl_convex_hull.c: extend: avoid wrapping around already known ridges
Sven Verdoolaege [Tue, 3 Mar 2009 18:04:39 +0000 (19:04 +0100)]
isl_convex_hull.c: introduce proto_hull based on obvious facet constraints
proto_hull looks for for obvious facet constraints.
If any such constraints can be found, then the calling function
no longer needs to call initial_hull.
Sven Verdoolaege [Tue, 3 Mar 2009 14:02:53 +0000 (15:02 +0100)]
isl_convex_hull.c: move initial hull construction into separate function
Sven Verdoolaege [Tue, 3 Mar 2009 13:30:32 +0000 (14:30 +0100)]
isl_convex_hull.c: move computation of bounds into uset_convex_hull_wrap
Sven Verdoolaege [Tue, 3 Mar 2009 13:29:10 +0000 (14:29 +0100)]
isl_map_convex_hull: check for boundedness using recession cone
Sven Verdoolaege [Fri, 27 Feb 2009 21:20:21 +0000 (22:20 +0100)]
isl_basic_map_convex_hull: use tableau to detect redundant constraints
Sven Verdoolaege [Wed, 4 Mar 2009 17:12:30 +0000 (18:12 +0100)]
isl_affine_hull.c: use tableau to detect implicit equalities
Sven Verdoolaege [Sun, 15 Mar 2009 09:49:48 +0000 (10:49 +0100)]
isl_tab.c: don't detect equalities while setting up tableau
The original description of the algorithm tries to detect equalities
as soon as possible. In our application it may be best to wait
until all constraints are available. In some case we are not
even interested in the equalities.
Sven Verdoolaege [Wed, 4 Mar 2009 17:12:30 +0000 (18:12 +0100)]
add internal representation of LP tableaus
Sven Verdoolaege [Wed, 11 Mar 2009 16:23:09 +0000 (17:23 +0100)]
add isl_mat_extend
Sven Verdoolaege [Mon, 9 Mar 2009 10:44:05 +0000 (11:44 +0100)]
add isl_set_dim
Sven Verdoolaege [Tue, 3 Mar 2009 20:28:00 +0000 (21:28 +0100)]
privately export isl_basic_{set,map}_normalize_constraints
Sven Verdoolaege [Tue, 3 Mar 2009 14:01:51 +0000 (15:01 +0100)]
add isl_basic_set_extend_dim
Sven Verdoolaege [Sun, 1 Mar 2009 22:16:04 +0000 (23:16 +0100)]
isl_basic_map_eliminate_vars: clear divs first
Sven Verdoolaege [Sat, 28 Feb 2009 14:16:44 +0000 (15:16 +0100)]
isl_basic_map_eliminate_vars: remove all dependent vars first
Sven Verdoolaege [Fri, 6 Mar 2009 17:26:34 +0000 (18:26 +0100)]
add isl_hash_table_alloc and isl_hash_table_free
Sven Verdoolaege [Tue, 3 Mar 2009 14:54:03 +0000 (15:54 +0100)]
isl_hash_table_init: take minimal size instead of number of bits needed
Sven Verdoolaege [Tue, 3 Mar 2009 21:08:14 +0000 (22:08 +0100)]
isl_{basic_,}set_preimage: drop ctx argument
Sven Verdoolaege [Fri, 27 Feb 2009 10:18:01 +0000 (11:18 +0100)]
isl_basic_map_intersect: reuse sample value of either basic map if possible
If the sample value stored in one of the two basic maps is an element
of both basic maps, then we can keep it as sample value for the intersection.
Sven Verdoolaege [Thu, 26 Feb 2009 18:25:42 +0000 (19:25 +0100)]
add isl_int_ge
Sven Verdoolaege [Tue, 10 Mar 2009 18:23:24 +0000 (19:23 +0100)]
isl_basic_set_has_defining_inequalities: fix typo
Sven Verdoolaege [Mon, 9 Mar 2009 12:22:45 +0000 (13:22 +0100)]
isl_constraint_div: perform required reference increase on basic map
Both divs and constraints own their contained basic maps, so we
can't just steal the basic map from the constraint.
Sven Verdoolaege [Thu, 26 Feb 2009 15:38:45 +0000 (16:38 +0100)]
isl_basic_map: put inequalities before equalities
When confronted with a list of inequalities that need to be
turned into equalities, we want to handle the inequalities
in the same order in which we handle inequalities that can
be removed. Eventually, we would want to do these at the
same time.
Sven Verdoolaege [Thu, 26 Feb 2009 11:35:55 +0000 (12:35 +0100)]
add isl_seq_normalize
Sven Verdoolaege [Thu, 26 Feb 2009 11:14:21 +0000 (12:14 +0100)]
isl_ctx.h: make FL_ISSET return a boolean value
Sven Verdoolaege [Wed, 4 Mar 2009 10:44:51 +0000 (11:44 +0100)]
rename F_ and FL_ macros to ISL_F_ and ISL_FL_ to avoid name clashes
Sven Verdoolaege [Thu, 26 Feb 2009 10:59:03 +0000 (11:59 +0100)]
add isl_mat_swap_cols
Sven Verdoolaege [Wed, 25 Feb 2009 20:01:24 +0000 (21:01 +0100)]
isl_mat_dump: also indent NULL mat
Sven Verdoolaege [Wed, 25 Feb 2009 20:00:47 +0000 (21:00 +0100)]
add isl_calloc_type
Sven Verdoolaege [Mon, 2 Mar 2009 22:20:19 +0000 (23:20 +0100)]
isl_map_convex_hull: normalize map first
Sven Verdoolaege [Tue, 3 Mar 2009 09:49:52 +0000 (10:49 +0100)]
isl_set_preimage: clear ISL_SET_NORMALIZED flag
Sven Verdoolaege [Sun, 22 Feb 2009 15:58:56 +0000 (16:58 +0100)]
add isl_basic_map_detect_equalities
Sven Verdoolaege [Fri, 20 Feb 2009 16:12:30 +0000 (17:12 +0100)]
add isl_map_remove
Sven Verdoolaege [Thu, 19 Feb 2009 08:17:01 +0000 (09:17 +0100)]
export isl_basic_map_is_equal
Sven Verdoolaege [Wed, 18 Feb 2009 12:42:55 +0000 (13:42 +0100)]
add isl_basic_map_remove
Sven Verdoolaege [Wed, 18 Feb 2009 12:02:41 +0000 (13:02 +0100)]
add isl_dim_range
Sven Verdoolaege [Tue, 17 Feb 2009 19:49:14 +0000 (20:49 +0100)]
add isl_map_product
Sven Verdoolaege [Tue, 17 Feb 2009 17:39:31 +0000 (18:39 +0100)]
add isl_basic_map_add_constraint
Sven Verdoolaege [Tue, 17 Feb 2009 17:17:17 +0000 (18:17 +0100)]
add isl_dim_add
Sven Verdoolaege [Mon, 16 Feb 2009 21:56:06 +0000 (22:56 +0100)]
isl_map_piplib.c: isl_map_from_quast: properly keep track of dimension names
Sven Verdoolaege [Mon, 16 Feb 2009 15:00:09 +0000 (16:00 +0100)]
change calling convention of isl_basic_map_{equal,less_at,more_at}
Sven Verdoolaege [Mon, 16 Feb 2009 14:47:30 +0000 (15:47 +0100)]
add isl_map_copy_basic_map and isl_map_drop_basic_map
Sven Verdoolaege [Mon, 16 Feb 2009 12:54:01 +0000 (13:54 +0100)]
add isl_map_from_range
Sven Verdoolaege [Mon, 16 Feb 2009 12:45:23 +0000 (13:45 +0100)]
add isl_map_fast_is_empty
Sven Verdoolaege [Mon, 16 Feb 2009 12:36:14 +0000 (13:36 +0100)]
change calling convention of isl_map_empty and add isl_map_empty_like
Sven Verdoolaege [Thu, 22 Jan 2009 18:45:22 +0000 (19:45 +0100)]
isl_map_intersect_{domain,range}: allow intersection with parameter constraints
Sven Verdoolaege [Thu, 22 Jan 2009 16:09:13 +0000 (17:09 +0100)]
isl_map_intersect: allow intersection with pure parameter constraints
Sven Verdoolaege [Sun, 22 Feb 2009 15:12:53 +0000 (16:12 +0100)]
isl_basic_map_affine_hull: fix search for integer points
Before, we would mistakenly only look for integer points
in adjacent hyperplanes. This would be sufficient if we
were looking instead for rational points, although we could
then obtain an over-approximation of the integer affine hull.
Sven Verdoolaege [Sun, 22 Feb 2009 11:22:51 +0000 (12:22 +0100)]
isl_basic_map_overlying_set: don't add div constraints for unknown divs
Constructing div constraints as if the div were known, results in
unsatisfiable constraints.
Perhaps isl_basic_map_overlying_set shouldn't get called with a model
with unknown divs, but we currently allow it.
Sven Verdoolaege [Tue, 17 Feb 2009 19:27:29 +0000 (20:27 +0100)]
isl_dim.c: update n_name (only) when changing names
Sven Verdoolaege [Wed, 11 Feb 2009 18:22:36 +0000 (19:22 +0100)]
fix serious error in isl_mat_parameter_compression
The old version would sometimes remove valid solutions.
Since isl_mat_parameter_compression is used during simplification
on practically any set containing existentially quantified variables
involved in equalities, any such set could get corrupted.
Sven Verdoolaege [Wed, 11 Feb 2009 10:24:37 +0000 (11:24 +0100)]
export isl_basic_map_intersect_range
Sven Verdoolaege [Tue, 10 Feb 2009 17:34:53 +0000 (18:34 +0100)]
add isl_basic_map_floordiv
Sven Verdoolaege [Tue, 10 Feb 2009 16:58:46 +0000 (17:58 +0100)]
add isl_basic_map_fast_is_fixed
Sven Verdoolaege [Tue, 10 Feb 2009 16:30:43 +0000 (17:30 +0100)]
add isl_basic_map_neg
Sven Verdoolaege [Tue, 10 Feb 2009 15:50:30 +0000 (16:50 +0100)]
add isl_basic_map_sum
Sven Verdoolaege [Tue, 10 Feb 2009 14:49:03 +0000 (15:49 +0100)]
add isl_map_fix_si, a generalization of isl_basic_map_fix_input_si
Sven Verdoolaege [Wed, 4 Feb 2009 15:33:45 +0000 (16:33 +0100)]
isl_map_simplify.c: remove_duplicate_divs: remove divs from last to first
Sven Verdoolaege [Wed, 4 Feb 2009 15:00:08 +0000 (16:00 +0100)]
isl_basic_map_gauss: be careful not to introduce circular div definitions
Sven Verdoolaege [Wed, 4 Feb 2009 14:47:14 +0000 (15:47 +0100)]
add functions for setting isl_divs
Sven Verdoolaege [Tue, 3 Feb 2009 20:41:40 +0000 (21:41 +0100)]
isl_map_from_quast: don't throw away any bottom leaves
Before, we would perform an "optimization" that would simply
discard any leaves with a bottom when we hadn't seen any leaves
with a solution yet, the intention being that we don't need
to collect bottom leaves if there are no solutions.
However, the bottom leaves may precede solution leaves and
then we would erroneously discard them.
Sven Verdoolaege [Tue, 27 Jan 2009 09:48:32 +0000 (10:48 +0100)]
isl_map_simplify.c: normalize_divs: fix use of variable compression
When there is a div that depends on another div, then we need
to be careful not to look for the other div in the variable
compression matrix.
Sven Verdoolaege [Tue, 27 Jan 2009 08:52:04 +0000 (09:52 +0100)]
isl_mat_variable_compression: fix use after free
Sven Verdoolaege [Mon, 26 Jan 2009 22:38:49 +0000 (23:38 +0100)]
isl_map_simplify.c: normalize_divs: ensure enough existentials are available
Before, we would assume that normalizing the divs could never
increase the number of existential variables, but as shown by
the added test case, this isn't always true.
Sven Verdoolaege [Thu, 22 Jan 2009 20:46:36 +0000 (21:46 +0100)]
isl_hash_table_remove: update number of entries
Otherwise, removing an element and later adding it back again
would increase the number of elements in the table, quickly
leading to overflows.
Sven Verdoolaege [Thu, 22 Jan 2009 14:10:28 +0000 (15:10 +0100)]
isl_map_simple_hull: plug memory leak
The leak was introduced in
4433b45d31f7f5461ee372a8a4aa2d3a955f96b5
(isl_map_underlying_set: align divs before calling this function).
Sven Verdoolaege [Fri, 9 Jan 2009 11:43:30 +0000 (12:43 +0100)]
add std::ostream &operator<<(std::ostream &os, isl_int i) (for C++ builds)
Sven Verdoolaege [Wed, 31 Dec 2008 14:49:04 +0000 (15:49 +0100)]
normalize divs involved in equalities
Sven Verdoolaege [Sat, 3 Jan 2009 10:21:23 +0000 (11:21 +0100)]
isl_map_underlying_set: drop names from dimesion in underlying set
When applying isl_mat transforamtions on sets, we currently
assume that these sets have no names for the dimensions.
Sven Verdoolaege [Fri, 2 Jan 2009 21:32:21 +0000 (22:32 +0100)]
add isl_mat_parameter_compression
Sven Verdoolaege [Fri, 2 Jan 2009 21:29:01 +0000 (22:29 +0100)]
isl_equalities.c: extract and export isl_mat_variable_compression
Sven Verdoolaege [Fri, 2 Jan 2009 21:25:18 +0000 (22:25 +0100)]
add isl_basic_set_is_empty
Sven Verdoolaege [Fri, 2 Jan 2009 21:22:48 +0000 (22:22 +0100)]
add isl_mat_right_kernel