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tree-predcom.c (tree_predictive_commoning_loop): Bail out when compute_data_dependences_for_loop returns false.

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* tree-predcom.c (tree_predictive_commoning_loop): Bail out when
        compute_data_dependences_for_loop returns false.
        * tree-parloops.c (loop_parallel_p): Likewise.

From-SVN: r183518
This commit is contained in:
Andrey Belevantsev 2012-01-25 17:11:50 +04:00 committed by Andrey Belevantsev
parent b9264b5f91
commit 9ca3d00efe
3 changed files with 26 additions and 4 deletions
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6
gcc/ChangeLog
View File

@ -1,3 +1,9 @@
2012-01-25 Andrey Belevantsev <abel@ispras.ru>
* tree-predcom.c (tree_predictive_commoning_loop): Bail out when
compute_data_dependences_for_loop returns false.
* tree-parloops.c (loop_parallel_p): Likewise.
2012-01-25 Richard Guenther <rguenther@suse.de>
* tree.h (get_pointer_alignment_1): Declare.

11
gcc/tree-parloops.c
View File

@ -387,8 +387,14 @@ loop_parallel_p (struct loop *loop, struct obstack * parloop_obstack)
datarefs = VEC_alloc (data_reference_p, heap, 10);
dependence_relations = VEC_alloc (ddr_p, heap, 10 * 10);
loop_nest = VEC_alloc (loop_p, heap, 3);
compute_data_dependences_for_loop (loop, true, &loop_nest, &datarefs,
&dependence_relations);
if (! compute_data_dependences_for_loop (loop, true, &loop_nest, &datarefs,
&dependence_relations))
{
if (dump_file && (dump_flags & TDF_DETAILS))
fprintf (dump_file, " FAILED: cannot analyze data dependencies\n");
ret = false;
goto end;
}
if (dump_file && (dump_flags & TDF_DETAILS))
dump_data_dependence_relations (dump_file, dependence_relations);
@ -405,6 +411,7 @@ loop_parallel_p (struct loop *loop, struct obstack * parloop_obstack)
fprintf (dump_file,
" FAILED: data dependencies exist across iterations\n");
end:
VEC_free (loop_p, heap, loop_nest);
free_dependence_relations (dependence_relations);
free_data_refs (datarefs);

13
gcc/tree-predcom.c
View File

@ -2476,8 +2476,17 @@ tree_predictive_commoning_loop (struct loop *loop)
datarefs = VEC_alloc (data_reference_p, heap, 10);
dependences = VEC_alloc (ddr_p, heap, 10);
loop_nest = VEC_alloc (loop_p, heap, 3);
compute_data_dependences_for_loop (loop, true, &loop_nest, &datarefs,
&dependences);
if (! compute_data_dependences_for_loop (loop, true, &loop_nest, &datarefs,
&dependences))
{
if (dump_file && (dump_flags & TDF_DETAILS))
fprintf (dump_file, "Cannot analyze data dependencies\n");
VEC_free (loop_p, heap, loop_nest);
free_data_refs (datarefs);
free_dependence_relations (dependences);
return false;
}
if (dump_file && (dump_flags & TDF_DETAILS))
dump_data_dependence_relations (dump_file, dependences);