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Add a new driver to data reference analysis.

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2009-07-30  Sebastian Pop  <sebastian.pop@amd.com>

	* tree-data-ref.c (graphite_find_data_references_in_stmt): New.
	* tree-data-ref.h (graphite_find_data_references_in_stmt): Declared.

From-SVN: r150297
This commit is contained in:
Sebastian Pop 2009-07-31 02:37:11 +00:00 committed by Sebastian Pop
parent a37d995a09
commit ed91d6616c
3 changed files with 38 additions and 0 deletions

5
gcc/ChangeLog

@ -1,3 +1,8 @@
2009-07-30 Sebastian Pop <sebastian.pop@amd.com>
* tree-data-ref.c (graphite_find_data_references_in_stmt): New.
* tree-data-ref.h (graphite_find_data_references_in_stmt): Declared.
2009-07-30 Sebastian Pop <sebastian.pop@amd.com>
* tree-data-ref.c (debug_data_references): New.

31
gcc/tree-data-ref.c

@ -4158,6 +4158,37 @@ find_data_references_in_stmt (struct loop *nest, gimple stmt,
return ret;
}
/* Stores the data references in STMT to DATAREFS. If there is an unanalyzable
reference, returns false, otherwise returns true. NEST is the outermost
loop of the loop nest in which the references should be analyzed. */
bool
graphite_find_data_references_in_stmt (struct loop *nest, gimple stmt,
VEC (data_reference_p, heap) **datarefs)
{
unsigned i;
VEC (data_ref_loc, heap) *references;
data_ref_loc *ref;
bool ret = true;
data_reference_p dr;
if (get_references_in_stmt (stmt, &references))
{
VEC_free (data_ref_loc, heap, references);
return false;
}
for (i = 0; VEC_iterate (data_ref_loc, references, i, ref); i++)
{
dr = create_data_ref (nest, *ref->pos, stmt, ref->is_read);
gcc_assert (dr != NULL);
VEC_safe_push (data_reference_p, heap, *datarefs, dr);
}
VEC_free (data_ref_loc, heap, references);
return ret;
}
/* Search the data references in LOOP, and record the information into
DATAREFS. Returns chrec_dont_know when failing to analyze a
difficult case, returns NULL_TREE otherwise. */

2
gcc/tree-data-ref.h

@ -405,6 +405,8 @@ extern void free_data_ref (data_reference_p);
extern void free_data_refs (VEC (data_reference_p, heap) *);
extern bool find_data_references_in_stmt (struct loop *, gimple,
VEC (data_reference_p, heap) **);
extern bool graphite_find_data_references_in_stmt (struct loop *, gimple,
VEC (data_reference_p, heap) **);
struct data_reference *create_data_ref (struct loop *, tree, gimple, bool);
extern bool find_loop_nest (struct loop *, VEC (loop_p, heap) **);
extern void compute_all_dependences (VEC (data_reference_p, heap) *,