aboutsummaryrefslogtreecommitdiffstats
path: root/gcc-4.9/gcc/graphite-poly.h
diff options
context:
space:
mode:
authorBen Cheng <bccheng@google.com>2014-03-25 22:37:19 -0700
committerBen Cheng <bccheng@google.com>2014-03-25 22:37:19 -0700
commit1bc5aee63eb72b341f506ad058502cd0361f0d10 (patch)
treec607e8252f3405424ff15bc2d00aa38dadbb2518 /gcc-4.9/gcc/graphite-poly.h
parent283a0bf58fcf333c58a2a92c3ebbc41fb9eb1fdb (diff)
downloadtoolchain_gcc-1bc5aee63eb72b341f506ad058502cd0361f0d10.tar.gz
toolchain_gcc-1bc5aee63eb72b341f506ad058502cd0361f0d10.tar.bz2
toolchain_gcc-1bc5aee63eb72b341f506ad058502cd0361f0d10.zip
Initial checkin of GCC 4.9.0 from trunk (r208799).
Change-Id: I48a3c08bb98542aa215912a75f03c0890e497dba
Diffstat (limited to 'gcc-4.9/gcc/graphite-poly.h')
-rw-r--r--gcc-4.9/gcc/graphite-poly.h1554
1 files changed, 1554 insertions, 0 deletions
diff --git a/gcc-4.9/gcc/graphite-poly.h b/gcc-4.9/gcc/graphite-poly.h
new file mode 100644
index 000000000..06d320eea
--- /dev/null
+++ b/gcc-4.9/gcc/graphite-poly.h
@@ -0,0 +1,1554 @@
+/* Graphite polyhedral representation.
+ Copyright (C) 2009-2014 Free Software Foundation, Inc.
+ Contributed by Sebastian Pop <sebastian.pop@amd.com> and
+ Tobias Grosser <grosser@fim.uni-passau.de>.
+
+This file is part of GCC.
+
+GCC is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 3, or (at your option)
+any later version.
+
+GCC is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with GCC; see the file COPYING3. If not see
+<http://www.gnu.org/licenses/>. */
+
+#ifndef GCC_GRAPHITE_POLY_H
+#define GCC_GRAPHITE_POLY_H
+
+typedef struct poly_dr *poly_dr_p;
+
+typedef struct poly_bb *poly_bb_p;
+
+typedef struct scop *scop_p;
+
+typedef unsigned graphite_dim_t;
+
+static inline graphite_dim_t pbb_dim_iter_domain (const struct poly_bb *);
+static inline graphite_dim_t pbb_nb_params (const struct poly_bb *);
+static inline graphite_dim_t scop_nb_params (scop_p);
+
+/* A data reference can write or read some memory or we
+ just know it may write some memory. */
+enum poly_dr_type
+{
+ PDR_READ,
+ /* PDR_MAY_READs are represented using PDR_READS. This does not
+ limit the expressiveness. */
+ PDR_WRITE,
+ PDR_MAY_WRITE
+};
+
+struct poly_dr
+{
+ /* An identifier for this PDR. */
+ int id;
+
+ /* The number of data refs identical to this one in the PBB. */
+ int nb_refs;
+
+ /* A pointer to compiler's data reference description. */
+ void *compiler_dr;
+
+ /* A pointer to the PBB that contains this data reference. */
+ poly_bb_p pbb;
+
+ enum poly_dr_type type;
+
+ /* The access polyhedron contains the polyhedral space this data
+ reference will access.
+
+ The polyhedron contains these dimensions:
+
+ - The alias set (a):
+ Every memory access is classified in at least one alias set.
+
+ - The subscripts (s_0, ..., s_n):
+ The memory is accessed using zero or more subscript dimensions.
+
+ - The iteration domain (variables and parameters)
+
+ Do not hardcode the dimensions. Use the following accessor functions:
+ - pdr_alias_set_dim
+ - pdr_subscript_dim
+ - pdr_iterator_dim
+ - pdr_parameter_dim
+
+ Example:
+
+ | int A[1335][123];
+ | int *p = malloc ();
+ |
+ | k = ...
+ | for i
+ | {
+ | if (unknown_function ())
+ | p = A;
+ | ... = p[?][?];
+ | for j
+ | A[i][j+k] = m;
+ | }
+
+ The data access A[i][j+k] in alias set "5" is described like this:
+
+ | i j k a s0 s1 1
+ | 0 0 0 1 0 0 -5 = 0
+ |-1 0 0 0 1 0 0 = 0
+ | 0 -1 -1 0 0 1 0 = 0
+ | 0 0 0 0 1 0 0 >= 0 # The last four lines describe the
+ | 0 0 0 0 0 1 0 >= 0 # array size.
+ | 0 0 0 0 -1 0 1335 >= 0
+ | 0 0 0 0 0 -1 123 >= 0
+
+ The pointer "*p" in alias set "5" and "7" is described as a union of
+ polyhedron:
+
+
+ | i k a s0 1
+ | 0 0 1 0 -5 = 0
+ | 0 0 0 1 0 >= 0
+
+ "or"
+
+ | i k a s0 1
+ | 0 0 1 0 -7 = 0
+ | 0 0 0 1 0 >= 0
+
+ "*p" accesses all of the object allocated with 'malloc'.
+
+ The scalar data access "m" is represented as an array with zero subscript
+ dimensions.
+
+ | i j k a 1
+ | 0 0 0 -1 15 = 0
+
+ The difference between the graphite internal format for access data and
+ the OpenSop format is in the order of columns.
+ Instead of having:
+
+ | i j k a s0 s1 1
+ | 0 0 0 1 0 0 -5 = 0
+ |-1 0 0 0 1 0 0 = 0
+ | 0 -1 -1 0 0 1 0 = 0
+ | 0 0 0 0 1 0 0 >= 0 # The last four lines describe the
+ | 0 0 0 0 0 1 0 >= 0 # array size.
+ | 0 0 0 0 -1 0 1335 >= 0
+ | 0 0 0 0 0 -1 123 >= 0
+
+ In OpenScop we have:
+
+ | a s0 s1 i j k 1
+ | 1 0 0 0 0 0 -5 = 0
+ | 0 1 0 -1 0 0 0 = 0
+ | 0 0 1 0 -1 -1 0 = 0
+ | 0 1 0 0 0 0 0 >= 0 # The last four lines describe the
+ | 0 0 1 0 0 0 0 >= 0 # array size.
+ | 0 -1 0 0 0 0 1335 >= 0
+ | 0 0 -1 0 0 0 123 >= 0
+
+ The OpenScop access function is printed as follows:
+
+ | 1 # The number of disjunct components in a union of access functions.
+ | R C O I L P # Described bellow.
+ | a s0 s1 i j k 1
+ | 1 0 0 0 0 0 -5 = 0
+ | 0 1 0 -1 0 0 0 = 0
+ | 0 0 1 0 -1 -1 0 = 0
+ | 0 1 0 0 0 0 0 >= 0 # The last four lines describe the
+ | 0 0 1 0 0 0 0 >= 0 # array size.
+ | 0 -1 0 0 0 0 1335 >= 0
+ | 0 0 -1 0 0 0 123 >= 0
+
+ Where:
+ - R: Number of rows.
+ - C: Number of columns.
+ - O: Number of output dimensions = alias set + number of subscripts.
+ - I: Number of input dimensions (iterators).
+ - L: Number of local (existentially quantified) dimensions.
+ - P: Number of parameters.
+
+ In the example, the vector "R C O I L P" is "7 7 3 2 0 1". */
+ isl_map *accesses;
+ isl_set *extent;
+
+ /* Data reference's base object set number, we must assure 2 pdrs are in the
+ same base object set before dependency checking. */
+ int dr_base_object_set;
+
+ /* The number of subscripts. */
+ graphite_dim_t nb_subscripts;
+};
+
+#define PDR_ID(PDR) (PDR->id)
+#define PDR_NB_REFS(PDR) (PDR->nb_refs)
+#define PDR_CDR(PDR) (PDR->compiler_dr)
+#define PDR_PBB(PDR) (PDR->pbb)
+#define PDR_TYPE(PDR) (PDR->type)
+#define PDR_ACCESSES(PDR) (NULL)
+#define PDR_BASE_OBJECT_SET(PDR) (PDR->dr_base_object_set)
+#define PDR_NB_SUBSCRIPTS(PDR) (PDR->nb_subscripts)
+
+void new_poly_dr (poly_bb_p, int, enum poly_dr_type, void *,
+ graphite_dim_t, isl_map *, isl_set *);
+void free_poly_dr (poly_dr_p);
+void debug_pdr (poly_dr_p, int);
+void print_pdr (FILE *, poly_dr_p, int);
+static inline scop_p pdr_scop (poly_dr_p pdr);
+
+/* The dimension of the iteration domain of the scop of PDR. */
+
+static inline graphite_dim_t
+pdr_dim_iter_domain (poly_dr_p pdr)
+{
+ return pbb_dim_iter_domain (PDR_PBB (pdr));
+}
+
+/* The number of parameters of the scop of PDR. */
+
+static inline graphite_dim_t
+pdr_nb_params (poly_dr_p pdr)
+{
+ return scop_nb_params (pdr_scop (pdr));
+}
+
+/* The dimension of the alias set in PDR. */
+
+static inline graphite_dim_t
+pdr_alias_set_dim (poly_dr_p pdr)
+{
+ poly_bb_p pbb = PDR_PBB (pdr);
+
+ return pbb_dim_iter_domain (pbb) + pbb_nb_params (pbb);
+}
+
+/* The dimension in PDR containing subscript S. */
+
+static inline graphite_dim_t
+pdr_subscript_dim (poly_dr_p pdr, graphite_dim_t s)
+{
+ poly_bb_p pbb = PDR_PBB (pdr);
+
+ return pbb_dim_iter_domain (pbb) + pbb_nb_params (pbb) + 1 + s;
+}
+
+/* The dimension in PDR containing the loop iterator ITER. */
+
+static inline graphite_dim_t
+pdr_iterator_dim (poly_dr_p pdr ATTRIBUTE_UNUSED, graphite_dim_t iter)
+{
+ return iter;
+}
+
+/* The dimension in PDR containing parameter PARAM. */
+
+static inline graphite_dim_t
+pdr_parameter_dim (poly_dr_p pdr, graphite_dim_t param)
+{
+ poly_bb_p pbb = PDR_PBB (pdr);
+
+ return pbb_dim_iter_domain (pbb) + param;
+}
+
+/* Returns true when PDR is a "read". */
+
+static inline bool
+pdr_read_p (poly_dr_p pdr)
+{
+ return PDR_TYPE (pdr) == PDR_READ;
+}
+
+/* Returns true when PDR is a "write". */
+
+static inline bool
+pdr_write_p (poly_dr_p pdr)
+{
+ return PDR_TYPE (pdr) == PDR_WRITE;
+}
+
+/* Returns true when PDR is a "may write". */
+
+static inline bool
+pdr_may_write_p (poly_dr_p pdr)
+{
+ return PDR_TYPE (pdr) == PDR_MAY_WRITE;
+}
+
+/* Return true when PDR1 and PDR2 are similar data accesses: they have
+ the same base array, and the same access functions. */
+
+static inline bool
+same_pdr_p (poly_dr_p pdr1, poly_dr_p pdr2)
+{
+ return PDR_NB_SUBSCRIPTS (pdr1) == PDR_NB_SUBSCRIPTS (pdr2)
+ && PDR_BASE_OBJECT_SET (pdr1) == PDR_BASE_OBJECT_SET (pdr2);
+}
+
+typedef struct poly_scattering *poly_scattering_p;
+
+struct poly_scattering
+{
+ /* The number of local variables. */
+ int nb_local_variables;
+
+ /* The number of scattering dimensions. */
+ int nb_scattering;
+};
+
+/* POLY_BB represents a blackbox in the polyhedral model. */
+
+struct poly_bb
+{
+ /* Pointer to a basic block or a statement in the compiler. */
+ void *black_box;
+
+ /* Pointer to the SCOP containing this PBB. */
+ scop_p scop;
+
+ /* The iteration domain of this bb. The layout of this polyhedron
+ is I|G with I the iteration domain, G the context parameters.
+
+ Example:
+
+ for (i = a - 7*b + 8; i <= 3*a + 13*b + 20; i++)
+ for (j = 2; j <= 2*i + 5; j++)
+ for (k = 0; k <= 5; k++)
+ S (i,j,k)
+
+ Loop iterators: i, j, k
+ Parameters: a, b
+
+ | i >= a - 7b + 8
+ | i <= 3a + 13b + 20
+ | j >= 2
+ | j <= 2i + 5
+ | k >= 0
+ | k <= 5
+
+ The number of variables in the DOMAIN may change and is not
+ related to the number of loops in the original code. */
+ isl_set *domain;
+
+ /* The data references we access. */
+ vec<poly_dr_p> drs;
+
+ /* The original scattering. */
+ poly_scattering_p _original;
+ isl_map *schedule;
+
+ /* The transformed scattering. */
+ poly_scattering_p _transformed;
+ isl_map *transformed;
+
+ /* A copy of the transformed scattering. */
+ poly_scattering_p _saved;
+ isl_map *saved;
+
+ /* True when this PBB contains only a reduction statement. */
+ bool is_reduction;
+};
+
+#define PBB_BLACK_BOX(PBB) ((gimple_bb_p) PBB->black_box)
+#define PBB_SCOP(PBB) (PBB->scop)
+#define PBB_DOMAIN(PBB) (NULL)
+#define PBB_DRS(PBB) (PBB->drs)
+#define PBB_ORIGINAL(PBB) (PBB->_original)
+#define PBB_ORIGINAL_SCATTERING(PBB) (NULL)
+#define PBB_TRANSFORMED(PBB) (PBB->_transformed)
+#define PBB_TRANSFORMED_SCATTERING(PBB) (NULL)
+#define PBB_SAVED(PBB) (PBB->_saved)
+/* XXX isl if we ever need local vars in the scatter, we can't use the
+ out dimension of transformed to count the scatterting transform dimension.
+ */
+#define PBB_NB_LOCAL_VARIABLES(PBB) (0)
+#define PBB_NB_SCATTERING_TRANSFORM(PBB) (isl_map_n_out (PBB->transformed))
+#define PBB_IS_REDUCTION(PBB) (PBB->is_reduction)
+
+extern poly_bb_p new_poly_bb (scop_p, void *);
+extern void free_poly_bb (poly_bb_p);
+extern void debug_loop_vec (poly_bb_p);
+extern void schedule_to_scattering (poly_bb_p, int);
+extern void print_pbb_domain (FILE *, poly_bb_p, int);
+extern void print_pbb (FILE *, poly_bb_p, int);
+extern void print_scop_context (FILE *, scop_p, int);
+extern void print_scop (FILE *, scop_p, int);
+extern void print_cloog (FILE *, scop_p, int);
+extern void debug_pbb_domain (poly_bb_p, int);
+extern void debug_pbb (poly_bb_p, int);
+extern void print_pdrs (FILE *, poly_bb_p, int);
+extern void debug_pdrs (poly_bb_p, int);
+extern void debug_scop_context (scop_p, int);
+extern void debug_scop (scop_p, int);
+extern void debug_cloog (scop_p, int);
+extern void print_scop_params (FILE *, scop_p, int);
+extern void debug_scop_params (scop_p, int);
+extern void print_iteration_domain (FILE *, poly_bb_p, int);
+extern void print_iteration_domains (FILE *, scop_p, int);
+extern void debug_iteration_domain (poly_bb_p, int);
+extern void debug_iteration_domains (scop_p, int);
+extern void print_isl_set (FILE *, isl_set *);
+extern void print_isl_map (FILE *, isl_map *);
+extern void print_isl_aff (FILE *, isl_aff *);
+extern void print_isl_constraint (FILE *, isl_constraint *);
+extern void debug_isl_set (isl_set *);
+extern void debug_isl_map (isl_map *);
+extern void debug_isl_aff (isl_aff *);
+extern void debug_isl_constraint (isl_constraint *);
+extern int scop_do_interchange (scop_p);
+extern int scop_do_strip_mine (scop_p, int);
+extern bool scop_do_block (scop_p);
+extern bool flatten_all_loops (scop_p);
+extern bool optimize_isl (scop_p);
+extern void pbb_number_of_iterations_at_time (poly_bb_p, graphite_dim_t, mpz_t);
+extern void debug_gmp_value (mpz_t);
+
+/* Return the number of write data references in PBB. */
+
+static inline int
+number_of_write_pdrs (poly_bb_p pbb)
+{
+ int res = 0;
+ int i;
+ poly_dr_p pdr;
+
+ for (i = 0; PBB_DRS (pbb).iterate (i, &pdr); i++)
+ if (PDR_TYPE (pdr) == PDR_WRITE)
+ res++;
+
+ return res;
+}
+
+/* Returns a gimple_bb from BB. */
+
+static inline gimple_bb_p
+gbb_from_bb (basic_block bb)
+{
+ return (gimple_bb_p) bb->aux;
+}
+
+/* The poly_bb of the BB. */
+
+static inline poly_bb_p
+pbb_from_bb (basic_block bb)
+{
+ return GBB_PBB (gbb_from_bb (bb));
+}
+
+/* The basic block of the PBB. */
+
+static inline basic_block
+pbb_bb (poly_bb_p pbb)
+{
+ return GBB_BB (PBB_BLACK_BOX (pbb));
+}
+
+/* The index of the PBB. */
+
+static inline int
+pbb_index (poly_bb_p pbb)
+{
+ return pbb_bb (pbb)->index;
+}
+
+/* The loop of the PBB. */
+
+static inline loop_p
+pbb_loop (poly_bb_p pbb)
+{
+ return gbb_loop (PBB_BLACK_BOX (pbb));
+}
+
+/* The scop that contains the PDR. */
+
+static inline scop_p
+pdr_scop (poly_dr_p pdr)
+{
+ return PBB_SCOP (PDR_PBB (pdr));
+}
+
+/* Set black box of PBB to BLACKBOX. */
+
+static inline void
+pbb_set_black_box (poly_bb_p pbb, void *black_box)
+{
+ pbb->black_box = black_box;
+}
+
+/* The number of loops around PBB: the dimension of the iteration
+ domain. */
+
+static inline graphite_dim_t
+pbb_dim_iter_domain (const struct poly_bb *pbb)
+{
+ return isl_set_dim (pbb->domain, isl_dim_set);
+}
+
+/* The number of params defined in PBB. */
+
+static inline graphite_dim_t
+pbb_nb_params (const struct poly_bb *pbb)
+{
+ scop_p scop = PBB_SCOP (pbb);
+
+ return scop_nb_params (scop);
+}
+
+/* The number of scattering dimensions in the SCATTERING polyhedron
+ of a PBB for a given SCOP. */
+
+static inline graphite_dim_t
+pbb_nb_scattering_orig (const struct poly_bb *pbb)
+{
+ return 2 * pbb_dim_iter_domain (pbb) + 1;
+}
+
+/* The number of scattering dimensions in PBB. */
+
+static inline graphite_dim_t
+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. */
+
+static inline graphite_dim_t
+pbb_nb_local_vars (const struct poly_bb *pbb ATTRIBUTE_UNUSED)
+{
+ /* For now we do not have any local variables, as we do not do strip
+ mining for example. */
+ return PBB_NB_LOCAL_VARIABLES (pbb);
+}
+
+/* The dimension in the domain of PBB containing the iterator ITER. */
+
+static inline graphite_dim_t
+pbb_iterator_dim (poly_bb_p pbb ATTRIBUTE_UNUSED, graphite_dim_t iter)
+{
+ return iter;
+}
+
+/* The dimension in the domain of PBB containing the iterator ITER. */
+
+static inline graphite_dim_t
+pbb_parameter_dim (poly_bb_p pbb, graphite_dim_t param)
+{
+ return param
+ + pbb_dim_iter_domain (pbb);
+}
+
+/* The dimension in the original scattering polyhedron of PBB
+ containing the scattering iterator SCATTER. */
+
+static inline graphite_dim_t
+psco_scattering_dim (poly_bb_p pbb ATTRIBUTE_UNUSED, graphite_dim_t scatter)
+{
+ gcc_assert (scatter < pbb_nb_scattering_orig (pbb));
+ return scatter;
+}
+
+/* The dimension in the transformed scattering polyhedron of PBB
+ containing the scattering iterator SCATTER. */
+
+static inline graphite_dim_t
+psct_scattering_dim (poly_bb_p pbb ATTRIBUTE_UNUSED, graphite_dim_t scatter)
+{
+ gcc_assert (scatter <= pbb_nb_scattering_transform (pbb));
+ return scatter;
+}
+
+/* The dimension in the transformed scattering polyhedron of PBB of
+ the local variable LV. */
+
+static inline graphite_dim_t
+psct_local_var_dim (poly_bb_p pbb, graphite_dim_t lv)
+{
+ gcc_assert (lv <= pbb_nb_local_vars (pbb));
+ return lv + pbb_nb_scattering_transform (pbb);
+}
+
+/* The dimension in the original scattering polyhedron of PBB
+ containing the loop iterator ITER. */
+
+static inline graphite_dim_t
+psco_iterator_dim (poly_bb_p pbb, graphite_dim_t iter)
+{
+ gcc_assert (iter < pbb_dim_iter_domain (pbb));
+ return iter + pbb_nb_scattering_orig (pbb);
+}
+
+/* The dimension in the transformed scattering polyhedron of PBB
+ containing the loop iterator ITER. */
+
+static inline graphite_dim_t
+psct_iterator_dim (poly_bb_p pbb, graphite_dim_t iter)
+{
+ gcc_assert (iter < pbb_dim_iter_domain (pbb));
+ return iter
+ + pbb_nb_scattering_transform (pbb)
+ + pbb_nb_local_vars (pbb);
+}
+
+/* The dimension in the original scattering polyhedron of PBB
+ containing parameter PARAM. */
+
+static inline graphite_dim_t
+psco_parameter_dim (poly_bb_p pbb, graphite_dim_t param)
+{
+ gcc_assert (param < pbb_nb_params (pbb));
+ return param
+ + pbb_nb_scattering_orig (pbb)
+ + pbb_dim_iter_domain (pbb);
+}
+
+/* The dimension in the transformed scattering polyhedron of PBB
+ containing parameter PARAM. */
+
+static inline graphite_dim_t
+psct_parameter_dim (poly_bb_p pbb, graphite_dim_t param)
+{
+ gcc_assert (param < pbb_nb_params (pbb));
+ return param
+ + pbb_nb_scattering_transform (pbb)
+ + pbb_nb_local_vars (pbb)
+ + pbb_dim_iter_domain (pbb);
+}
+
+/* The scattering dimension of PBB corresponding to the dynamic level
+ LEVEL. */
+
+static inline graphite_dim_t
+psct_dynamic_dim (poly_bb_p pbb, graphite_dim_t level)
+{
+ graphite_dim_t result = 1 + 2 * level;
+
+ gcc_assert (result < pbb_nb_scattering_transform (pbb));
+ return result;
+}
+
+/* The scattering dimension of PBB corresponding to the static
+ sequence of the loop level LEVEL. */
+
+static inline graphite_dim_t
+psct_static_dim (poly_bb_p pbb, graphite_dim_t level)
+{
+ graphite_dim_t result = 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. */
+
+static inline graphite_dim_t
+psct_add_local_variable (poly_bb_p pbb ATTRIBUTE_UNUSED)
+{
+ gcc_unreachable ();
+ return 0;
+}
+
+typedef struct lst *lst_p;
+
+/* Loops and Statements Tree. */
+struct lst {
+
+ /* LOOP_P is true when an LST node is a loop. */
+ bool loop_p;
+
+ /* A pointer to the loop that contains this node. */
+ lst_p loop_father;
+
+ /* The sum of all the memory strides for an LST loop. */
+ mpz_t memory_strides;
+
+ /* Loop nodes contain a sequence SEQ of LST nodes, statements
+ contain a pointer to their polyhedral representation PBB. */
+ union {
+ poly_bb_p pbb;
+ vec<lst_p> seq;
+ } node;
+};
+
+#define LST_LOOP_P(LST) ((LST)->loop_p)
+#define LST_LOOP_FATHER(LST) ((LST)->loop_father)
+#define LST_PBB(LST) ((LST)->node.pbb)
+#define LST_SEQ(LST) ((LST)->node.seq)
+#define LST_LOOP_MEMORY_STRIDES(LST) ((LST)->memory_strides)
+
+void scop_to_lst (scop_p);
+void print_lst (FILE *, lst_p, int);
+void debug_lst (lst_p);
+void dot_lst (lst_p);
+
+/* Creates a new LST loop with SEQ. */
+
+static inline lst_p
+new_lst_loop (vec<lst_p> seq)
+{
+ lst_p lst = XNEW (struct lst);
+ int i;
+ lst_p l;
+
+ LST_LOOP_P (lst) = true;
+ LST_SEQ (lst) = seq;
+ LST_LOOP_FATHER (lst) = NULL;
+ mpz_init (LST_LOOP_MEMORY_STRIDES (lst));
+ mpz_set_si (LST_LOOP_MEMORY_STRIDES (lst), -1);
+
+ for (i = 0; seq.iterate (i, &l); i++)
+ LST_LOOP_FATHER (l) = lst;
+
+ return lst;
+}
+
+/* Creates a new LST statement with PBB. */
+
+static inline lst_p
+new_lst_stmt (poly_bb_p pbb)
+{
+ lst_p lst = XNEW (struct lst);
+
+ LST_LOOP_P (lst) = false;
+ LST_PBB (lst) = pbb;
+ LST_LOOP_FATHER (lst) = NULL;
+ return lst;
+}
+
+/* Frees the memory used by LST. */
+
+static inline void
+free_lst (lst_p lst)
+{
+ if (!lst)
+ return;
+
+ if (LST_LOOP_P (lst))
+ {
+ int i;
+ lst_p l;
+
+ for (i = 0; LST_SEQ (lst).iterate (i, &l); i++)
+ free_lst (l);
+
+ mpz_clear (LST_LOOP_MEMORY_STRIDES (lst));
+ LST_SEQ (lst).release ();
+ }
+
+ free (lst);
+}
+
+/* Returns a copy of LST. */
+
+static inline lst_p
+copy_lst (lst_p lst)
+{
+ if (!lst)
+ return NULL;
+
+ if (LST_LOOP_P (lst))
+ {
+ int i;
+ lst_p l;
+ vec<lst_p> seq;
+ seq.create (5);
+
+ for (i = 0; LST_SEQ (lst).iterate (i, &l); i++)
+ seq.safe_push (copy_lst (l));
+
+ return new_lst_loop (seq);
+ }
+
+ return new_lst_stmt (LST_PBB (lst));
+}
+
+/* Adds a new loop under the loop LST. */
+
+static inline void
+lst_add_loop_under_loop (lst_p lst)
+{
+ vec<lst_p> seq;
+ seq.create (1);
+ lst_p l = new_lst_loop (LST_SEQ (lst));
+
+ gcc_assert (LST_LOOP_P (lst));
+
+ LST_LOOP_FATHER (l) = lst;
+ seq.quick_push (l);
+ LST_SEQ (lst) = seq;
+}
+
+/* Returns the loop depth of LST. */
+
+static inline int
+lst_depth (lst_p lst)
+{
+ if (!lst)
+ return -2;
+
+ /* The depth of the outermost "fake" loop is -1. This outermost
+ loop does not have a loop father and it is just a container, as
+ in the loop representation of GCC. */
+ if (!LST_LOOP_FATHER (lst))
+ return -1;
+
+ return lst_depth (LST_LOOP_FATHER (lst)) + 1;
+}
+
+/* Returns the Dewey number for LST. */
+
+static inline int
+lst_dewey_number (lst_p lst)
+{
+ int i;
+ lst_p l;
+
+ if (!lst)
+ return -1;
+
+ if (!LST_LOOP_FATHER (lst))
+ return 0;
+
+ FOR_EACH_VEC_ELT (LST_SEQ (LST_LOOP_FATHER (lst)), i, l)
+ if (l == lst)
+ return i;
+
+ return -1;
+}
+
+/* Returns the Dewey number of LST at depth DEPTH. */
+
+static inline int
+lst_dewey_number_at_depth (lst_p lst, int depth)
+{
+ gcc_assert (lst && depth >= 0 && lst_depth (lst) <= depth);
+
+ if (lst_depth (lst) == depth)
+ return lst_dewey_number (lst);
+
+ return lst_dewey_number_at_depth (LST_LOOP_FATHER (lst), depth);
+}
+
+/* Returns the predecessor of LST in the sequence of its loop father.
+ Returns NULL if LST is the first statement in the sequence. */
+
+static inline lst_p
+lst_pred (lst_p lst)
+{
+ int dewey;
+ lst_p father;
+
+ if (!lst || !LST_LOOP_FATHER (lst))
+ return NULL;
+
+ dewey = lst_dewey_number (lst);
+ if (dewey == 0)
+ return NULL;
+
+ father = LST_LOOP_FATHER (lst);
+ return LST_SEQ (father)[dewey - 1];
+}
+
+/* Returns the successor of LST in the sequence of its loop father.
+ Returns NULL if there is none. */
+
+static inline lst_p
+lst_succ (lst_p lst)
+{
+ int dewey;
+ lst_p father;
+
+ if (!lst || !LST_LOOP_FATHER (lst))
+ return NULL;
+
+ dewey = lst_dewey_number (lst);
+ father = LST_LOOP_FATHER (lst);
+
+ if (LST_SEQ (father).length () == (unsigned) dewey + 1)
+ return NULL;
+
+ return LST_SEQ (father)[dewey + 1];
+}
+
+
+/* Return the LST node corresponding to PBB. */
+
+static inline lst_p
+lst_find_pbb (lst_p lst, poly_bb_p pbb)
+{
+ int i;
+ lst_p l;
+
+ if (!lst)
+ return NULL;
+
+ if (!LST_LOOP_P (lst))
+ return (pbb == LST_PBB (lst)) ? lst : NULL;
+
+ for (i = 0; LST_SEQ (lst).iterate (i, &l); i++)
+ {
+ lst_p res = lst_find_pbb (l, pbb);
+ if (res)
+ return res;
+ }
+
+ return NULL;
+}
+
+/* Return the LST node corresponding to the loop around STMT at depth
+ LOOP_DEPTH. */
+
+static inline lst_p
+find_lst_loop (lst_p stmt, int loop_depth)
+{
+ lst_p loop = LST_LOOP_FATHER (stmt);
+
+ gcc_assert (loop_depth >= 0);
+
+ while (loop_depth < lst_depth (loop))
+ loop = LST_LOOP_FATHER (loop);
+
+ return loop;
+}
+
+/* Return the first LST representing a PBB statement in LST. */
+
+static inline lst_p
+lst_find_first_pbb (lst_p lst)
+{
+ int i;
+ lst_p l;
+
+ if (!lst)
+ return NULL;
+
+ if (!LST_LOOP_P (lst))
+ return lst;
+
+ for (i = 0; LST_SEQ (lst).iterate (i, &l); i++)
+ {
+ lst_p res = lst_find_first_pbb (l);
+ if (res)
+ return res;
+ }
+
+ return NULL;
+}
+
+/* Returns true when LST is a loop that does not contain
+ statements. */
+
+static inline bool
+lst_empty_p (lst_p lst)
+{
+ return !lst_find_first_pbb (lst);
+}
+
+/* Return the last LST representing a PBB statement in LST. */
+
+static inline lst_p
+lst_find_last_pbb (lst_p lst)
+{
+ int i;
+ lst_p l, res = NULL;
+
+ if (!lst)
+ return NULL;
+
+ if (!LST_LOOP_P (lst))
+ return lst;
+
+ for (i = 0; LST_SEQ (lst).iterate (i, &l); i++)
+ {
+ lst_p last = lst_find_last_pbb (l);
+
+ if (last)
+ res = last;
+ }
+
+ gcc_assert (res);
+ return res;
+}
+
+/* Returns true if LOOP contains LST, in other words, if LST is nested
+ in LOOP. */
+
+static inline bool
+lst_contains_p (lst_p loop, lst_p lst)
+{
+ if (!loop || !lst || !LST_LOOP_P (loop))
+ return false;
+
+ if (loop == lst)
+ return true;
+
+ return lst_contains_p (loop, LST_LOOP_FATHER (lst));
+}
+
+/* Returns true if LOOP contains PBB, in other words, if PBB is nested
+ in LOOP. */
+
+static inline bool
+lst_contains_pbb (lst_p loop, poly_bb_p pbb)
+{
+ return lst_find_pbb (loop, pbb) ? true : false;
+}
+
+/* Creates a loop nest of depth NB_LOOPS containing LST. */
+
+static inline lst_p
+lst_create_nest (int nb_loops, lst_p lst)
+{
+ lst_p res, loop;
+ vec<lst_p> seq;
+
+ if (nb_loops == 0)
+ return lst;
+
+ seq.create (1);
+ loop = lst_create_nest (nb_loops - 1, lst);
+ seq.quick_push (loop);
+ res = new_lst_loop (seq);
+ LST_LOOP_FATHER (loop) = res;
+
+ return res;
+}
+
+/* Removes LST from the sequence of statements of its loop father. */
+
+static inline void
+lst_remove_from_sequence (lst_p lst)
+{
+ lst_p father = LST_LOOP_FATHER (lst);
+ int dewey = lst_dewey_number (lst);
+
+ gcc_assert (lst && father && dewey >= 0);
+
+ LST_SEQ (father).ordered_remove (dewey);
+ LST_LOOP_FATHER (lst) = NULL;
+}
+
+/* Removes the loop LST and inline its body in the father loop. */
+
+static inline void
+lst_remove_loop_and_inline_stmts_in_loop_father (lst_p lst)
+{
+ lst_p l, father = LST_LOOP_FATHER (lst);
+ int i, dewey = lst_dewey_number (lst);
+
+ gcc_assert (lst && father && dewey >= 0);
+
+ LST_SEQ (father).ordered_remove (dewey);
+ LST_LOOP_FATHER (lst) = NULL;
+
+ FOR_EACH_VEC_ELT (LST_SEQ (lst), i, l)
+ {
+ LST_SEQ (father).safe_insert (dewey + i, l);
+ LST_LOOP_FATHER (l) = father;
+ }
+}
+
+/* Sets NITER to the upper bound approximation of the number of
+ iterations of loop LST. */
+
+static inline void
+lst_niter_for_loop (lst_p lst, mpz_t niter)
+{
+ int depth = lst_depth (lst);
+ poly_bb_p pbb = LST_PBB (lst_find_first_pbb (lst));
+
+ gcc_assert (LST_LOOP_P (lst));
+ pbb_number_of_iterations_at_time (pbb, psct_dynamic_dim (pbb, depth), niter);
+}
+
+/* Updates the scattering of PBB to be at the DEWEY number in the loop
+ at depth LEVEL. */
+
+static inline void
+pbb_update_scattering (poly_bb_p pbb, graphite_dim_t level, int dewey)
+{
+ graphite_dim_t sched = psct_static_dim (pbb, level);
+ isl_space *d = isl_map_get_space (pbb->transformed);
+ isl_space *d1 = isl_space_range (d);
+ unsigned i, n = isl_space_dim (d1, isl_dim_out);
+ isl_space *d2 = isl_space_add_dims (d1, isl_dim_in, n);
+ isl_map *x = isl_map_universe (d2);
+
+ x = isl_map_fix_si (x, isl_dim_out, sched, dewey);
+
+ for (i = 0; i < n; i++)
+ if (i != sched)
+ x = isl_map_equate (x, isl_dim_in, i, isl_dim_out, i);
+
+ pbb->transformed = isl_map_apply_range (pbb->transformed, x);
+}
+
+/* Updates the scattering of all the PBBs under LST to be at the DEWEY
+ number in the loop at depth LEVEL. */
+
+static inline void
+lst_update_scattering_under (lst_p lst, int level, int dewey)
+{
+ int i;
+ lst_p l;
+
+ gcc_assert (lst && level >= 0 && dewey >= 0);
+
+ if (LST_LOOP_P (lst))
+ for (i = 0; LST_SEQ (lst).iterate (i, &l); i++)
+ lst_update_scattering_under (l, level, dewey);
+ else
+ pbb_update_scattering (LST_PBB (lst), level, dewey);
+}
+
+/* Updates the all the scattering levels of all the PBBs under
+ LST. */
+
+static inline void
+lst_update_scattering (lst_p lst)
+{
+ int i;
+ lst_p l;
+
+ if (!lst)
+ return;
+
+ if (LST_LOOP_FATHER (lst))
+ {
+ lst_p father = LST_LOOP_FATHER (lst);
+ int dewey = lst_dewey_number (lst);
+ int level = lst_depth (lst);
+
+ gcc_assert (lst && father && dewey >= 0 && level >= 0);
+
+ for (i = dewey; LST_SEQ (father).iterate (i, &l); i++)
+ lst_update_scattering_under (l, level, i);
+ }
+
+ if (LST_LOOP_P (lst))
+ for (i = 0; LST_SEQ (lst).iterate (i, &l); i++)
+ lst_update_scattering (l);
+}
+
+/* Inserts LST1 before LST2 if BEFORE is true; inserts LST1 after LST2
+ if BEFORE is false. */
+
+static inline void
+lst_insert_in_sequence (lst_p lst1, lst_p lst2, bool before)
+{
+ lst_p father;
+ int dewey;
+
+ /* Do not insert empty loops. */
+ if (!lst1 || lst_empty_p (lst1))
+ return;
+
+ father = LST_LOOP_FATHER (lst2);
+ dewey = lst_dewey_number (lst2);
+
+ gcc_assert (lst2 && father && dewey >= 0);
+
+ LST_SEQ (father).safe_insert (before ? dewey : dewey + 1, lst1);
+ LST_LOOP_FATHER (lst1) = father;
+}
+
+/* Replaces LST1 with LST2. */
+
+static inline void
+lst_replace (lst_p lst1, lst_p lst2)
+{
+ lst_p father;
+ int dewey;
+
+ if (!lst2 || lst_empty_p (lst2))
+ return;
+
+ father = LST_LOOP_FATHER (lst1);
+ dewey = lst_dewey_number (lst1);
+ LST_LOOP_FATHER (lst2) = father;
+ LST_SEQ (father)[dewey] = lst2;
+}
+
+/* Returns a copy of ROOT where LST has been replaced by a copy of the
+ LSTs A B C in this sequence. */
+
+static inline lst_p
+lst_substitute_3 (lst_p root, lst_p lst, lst_p a, lst_p b, lst_p c)
+{
+ int i;
+ lst_p l;
+ vec<lst_p> seq;
+
+ if (!root)
+ return NULL;
+
+ gcc_assert (lst && root != lst);
+
+ if (!LST_LOOP_P (root))
+ return new_lst_stmt (LST_PBB (root));
+
+ seq.create (5);
+
+ for (i = 0; LST_SEQ (root).iterate (i, &l); i++)
+ if (l != lst)
+ seq.safe_push (lst_substitute_3 (l, lst, a, b, c));
+ else
+ {
+ if (!lst_empty_p (a))
+ seq.safe_push (copy_lst (a));
+ if (!lst_empty_p (b))
+ seq.safe_push (copy_lst (b));
+ if (!lst_empty_p (c))
+ seq.safe_push (copy_lst (c));
+ }
+
+ return new_lst_loop (seq);
+}
+
+/* Moves LST before LOOP if BEFORE is true, and after the LOOP if
+ BEFORE is false. */
+
+static inline void
+lst_distribute_lst (lst_p loop, lst_p lst, bool before)
+{
+ int loop_depth = lst_depth (loop);
+ int depth = lst_depth (lst);
+ int nb_loops = depth - loop_depth;
+
+ gcc_assert (lst && loop && LST_LOOP_P (loop) && nb_loops > 0);
+
+ lst_remove_from_sequence (lst);
+ lst_insert_in_sequence (lst_create_nest (nb_loops, lst), loop, before);
+}
+
+/* Removes from LOOP all the statements before/after and including PBB
+ if BEFORE is true/false. Returns the negation of BEFORE when the
+ statement PBB has been found. */
+
+static inline bool
+lst_remove_all_before_including_pbb (lst_p loop, poly_bb_p pbb, bool before)
+{
+ int i;
+ lst_p l;
+
+ if (!loop || !LST_LOOP_P (loop))
+ return before;
+
+ for (i = 0; LST_SEQ (loop).iterate (i, &l);)
+ if (LST_LOOP_P (l))
+ {
+ before = lst_remove_all_before_including_pbb (l, pbb, before);
+
+ if (LST_SEQ (l).length () == 0)
+ {
+ LST_SEQ (loop).ordered_remove (i);
+ free_lst (l);
+ }
+ else
+ i++;
+ }
+ else
+ {
+ if (before)
+ {
+ if (LST_PBB (l) == pbb)
+ before = false;
+
+ LST_SEQ (loop).ordered_remove (i);
+ free_lst (l);
+ }
+ else if (LST_PBB (l) == pbb)
+ {
+ before = true;
+ LST_SEQ (loop).ordered_remove (i);
+ free_lst (l);
+ }
+ else
+ i++;
+ }
+
+ return before;
+}
+
+/* Removes from LOOP all the statements before/after and excluding PBB
+ if BEFORE is true/false; Returns the negation of BEFORE when the
+ statement PBB has been found. */
+
+static inline bool
+lst_remove_all_before_excluding_pbb (lst_p loop, poly_bb_p pbb, bool before)
+{
+ int i;
+ lst_p l;
+
+ if (!loop || !LST_LOOP_P (loop))
+ return before;
+
+ for (i = 0; LST_SEQ (loop).iterate (i, &l);)
+ if (LST_LOOP_P (l))
+ {
+ before = lst_remove_all_before_excluding_pbb (l, pbb, before);
+
+ if (LST_SEQ (l).length () == 0)
+ {
+ LST_SEQ (loop).ordered_remove (i);
+ free_lst (l);
+ continue;
+ }
+
+ i++;
+ }
+ else
+ {
+ if (before && LST_PBB (l) != pbb)
+ {
+ LST_SEQ (loop).ordered_remove (i);
+ free_lst (l);
+ continue;
+ }
+
+ i++;
+
+ if (LST_PBB (l) == pbb)
+ before = before ? false : true;
+ }
+
+ return before;
+}
+
+/* A SCOP is a Static Control Part of the program, simple enough to be
+ represented in polyhedral form. */
+struct scop
+{
+ /* A SCOP is defined as a SESE region. */
+ void *region;
+
+ /* Number of parameters in SCoP. */
+ graphite_dim_t nb_params;
+
+ /* All the basic blocks in this scop that contain memory references
+ and that will be represented as statements in the polyhedral
+ representation. */
+ vec<poly_bb_p> bbs;
+
+ /* Original, transformed and saved schedules. */
+ lst_p original_schedule, transformed_schedule, saved_schedule;
+
+ /* The context describes known restrictions concerning the parameters
+ and relations in between the parameters.
+
+ void f (int8_t a, uint_16_t b) {
+ c = 2 a + b;
+ ...
+ }
+
+ Here we can add these restrictions to the context:
+
+ -128 >= a >= 127
+ 0 >= b >= 65,535
+ c = 2a + b */
+ isl_set *context;
+
+ /* The context used internally by ISL. */
+ isl_ctx *ctx;
+
+ /* The original dependence relations:
+ RAW are read after write dependences,
+ WAR are write after read dependences,
+ WAW are write after write dependences. */
+ isl_union_map *must_raw, *may_raw, *must_raw_no_source, *may_raw_no_source,
+ *must_war, *may_war, *must_war_no_source, *may_war_no_source,
+ *must_waw, *may_waw, *must_waw_no_source, *may_waw_no_source;
+
+ /* True when the scop has been converted to its polyhedral
+ representation. */
+ bool poly_scop_p;
+};
+
+#define SCOP_BBS(S) (S->bbs)
+#define SCOP_REGION(S) ((sese) S->region)
+#define SCOP_CONTEXT(S) (NULL)
+#define SCOP_ORIGINAL_SCHEDULE(S) (S->original_schedule)
+#define SCOP_TRANSFORMED_SCHEDULE(S) (S->transformed_schedule)
+#define SCOP_SAVED_SCHEDULE(S) (S->saved_schedule)
+#define POLY_SCOP_P(S) (S->poly_scop_p)
+
+extern scop_p new_scop (void *);
+extern void free_scop (scop_p);
+extern void free_scops (vec<scop_p> );
+extern void print_generated_program (FILE *, scop_p);
+extern void debug_generated_program (scop_p);
+extern void print_scattering_function (FILE *, poly_bb_p, int);
+extern void print_scattering_functions (FILE *, scop_p, int);
+extern void debug_scattering_function (poly_bb_p, int);
+extern void debug_scattering_functions (scop_p, int);
+extern int scop_max_loop_depth (scop_p);
+extern int unify_scattering_dimensions (scop_p);
+extern bool apply_poly_transforms (scop_p);
+extern bool graphite_legal_transform (scop_p);
+extern void cloog_checksum (scop_p);
+
+/* Set the region of SCOP to REGION. */
+
+static inline void
+scop_set_region (scop_p scop, void *region)
+{
+ scop->region = region;
+}
+
+/* Returns the number of parameters for SCOP. */
+
+static inline graphite_dim_t
+scop_nb_params (scop_p scop)
+{
+ return scop->nb_params;
+}
+
+/* Set the number of params of SCOP to NB_PARAMS. */
+
+static inline void
+scop_set_nb_params (scop_p scop, graphite_dim_t nb_params)
+{
+ scop->nb_params = nb_params;
+}
+
+/* Allocates a new empty poly_scattering structure. */
+
+static inline poly_scattering_p
+poly_scattering_new (void)
+{
+ poly_scattering_p res = XNEW (struct poly_scattering);
+
+ res->nb_local_variables = 0;
+ res->nb_scattering = 0;
+ return res;
+}
+
+/* Free a poly_scattering structure. */
+
+static inline void
+poly_scattering_free (poly_scattering_p s)
+{
+ free (s);
+}
+
+/* Copies S and return a new scattering. */
+
+static inline poly_scattering_p
+poly_scattering_copy (poly_scattering_p s)
+{
+ poly_scattering_p res = poly_scattering_new ();
+
+ res->nb_local_variables = s->nb_local_variables;
+ res->nb_scattering = s->nb_scattering;
+ return res;
+}
+
+/* Saves the transformed scattering of PBB. */
+
+static inline void
+store_scattering_pbb (poly_bb_p pbb)
+{
+ isl_map_free (pbb->saved);
+ pbb->saved = isl_map_copy (pbb->transformed);
+}
+
+/* Stores the SCOP_TRANSFORMED_SCHEDULE to SCOP_SAVED_SCHEDULE. */
+
+static inline void
+store_lst_schedule (scop_p scop)
+{
+ if (SCOP_SAVED_SCHEDULE (scop))
+ free_lst (SCOP_SAVED_SCHEDULE (scop));
+
+ SCOP_SAVED_SCHEDULE (scop) = copy_lst (SCOP_TRANSFORMED_SCHEDULE (scop));
+}
+
+/* Restores the SCOP_TRANSFORMED_SCHEDULE from SCOP_SAVED_SCHEDULE. */
+
+static inline void
+restore_lst_schedule (scop_p scop)
+{
+ if (SCOP_TRANSFORMED_SCHEDULE (scop))
+ free_lst (SCOP_TRANSFORMED_SCHEDULE (scop));
+
+ SCOP_TRANSFORMED_SCHEDULE (scop) = copy_lst (SCOP_SAVED_SCHEDULE (scop));
+}
+
+/* Saves the scattering for all the pbbs in the SCOP. */
+
+static inline void
+store_scattering (scop_p scop)
+{
+ int i;
+ poly_bb_p pbb;
+
+ for (i = 0; SCOP_BBS (scop).iterate (i, &pbb); i++)
+ store_scattering_pbb (pbb);
+
+ store_lst_schedule (scop);
+}
+
+/* Restores the scattering of PBB. */
+
+static inline void
+restore_scattering_pbb (poly_bb_p pbb)
+{
+ gcc_assert (pbb->saved);
+
+ isl_map_free (pbb->transformed);
+ pbb->transformed = isl_map_copy (pbb->saved);
+}
+
+/* Restores the scattering for all the pbbs in the SCOP. */
+
+static inline void
+restore_scattering (scop_p scop)
+{
+ int i;
+ poly_bb_p pbb;
+
+ for (i = 0; SCOP_BBS (scop).iterate (i, &pbb); i++)
+ restore_scattering_pbb (pbb);
+
+ restore_lst_schedule (scop);
+}
+
+bool graphite_legal_transform (scop_p);
+isl_map *reverse_loop_at_level (poly_bb_p, int);
+isl_union_map *reverse_loop_for_pbbs (scop_p, vec<poly_bb_p> , int);
+__isl_give isl_union_map *extend_schedule (__isl_take isl_union_map *);
+
+
+void
+compute_deps (scop_p scop, vec<poly_bb_p> pbbs,
+ isl_union_map **must_raw,
+ isl_union_map **may_raw,
+ isl_union_map **must_raw_no_source,
+ isl_union_map **may_raw_no_source,
+ isl_union_map **must_war,
+ isl_union_map **may_war,
+ isl_union_map **must_war_no_source,
+ isl_union_map **may_war_no_source,
+ isl_union_map **must_waw,
+ isl_union_map **may_waw,
+ isl_union_map **must_waw_no_source,
+ isl_union_map **may_waw_no_source);
+
+#endif