From f0c216e1162d40748b3bc085146f386ca2109f46 Mon Sep 17 00:00:00 2001 From: Richard Biener Date: Thu, 12 Oct 2017 14:09:21 +0000 Subject: re PR tree-optimization/69728 (internal compiler error: in outer_projection_mupa, at graphite-sese-to-poly.c:1175) 2017-10-12 Richard Biener PR tree-optimization/69728 Revert 2017-09-19 Richard Biener PR tree-optimization/69728 * graphite-sese-to-poly.c (schedule_error): New global. (add_loop_schedule): Handle empty domain by failing the schedule. (build_original_schedule): Handle schedule_error. * graphite-sese-to-poly.c (add_loop_schedule): Handle empty domain by returning an unchanged schedule. * gcc.dg/graphite/pr69728.c: Adjust to reflect we can handle the loop now. Remove unrelated undefined behavior. From-SVN: r253677 --- gcc/graphite-sese-to-poly.c | 16 +--------------- 1 file changed, 1 insertion(+), 15 deletions(-) (limited to 'gcc/graphite-sese-to-poly.c') diff --git a/gcc/graphite-sese-to-poly.c b/gcc/graphite-sese-to-poly.c index 0e6824b..50b6fe8d 100644 --- a/gcc/graphite-sese-to-poly.c +++ b/gcc/graphite-sese-to-poly.c @@ -1066,8 +1066,6 @@ outer_projection_mupa (__isl_take isl_union_set *set, int n) return isl_multi_union_pw_aff_from_union_pw_multi_aff (data.res); } -static bool schedule_error; - /* Embed SCHEDULE in the constraints of the LOOP domain. */ static isl_schedule * @@ -1082,11 +1080,9 @@ add_loop_schedule (__isl_take isl_schedule *schedule, loop_p loop, 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 fail. - ??? Somehow drop pbbs in the loop instead. */ + /* We cannot apply an empty domain to pbbs in this loop so return early. */ if (isl_union_set_is_empty (domain)) { - schedule_error = true; isl_union_set_free (domain); return schedule; } @@ -1216,8 +1212,6 @@ build_schedule_loop_nest (scop_p scop, int *index, loop_p context_loop) static bool build_original_schedule (scop_p scop) { - schedule_error = false; - int i = 0; int n = scop->pbbs.length (); while (i < n) @@ -1232,14 +1226,6 @@ build_original_schedule (scop_p scop) scop->original_schedule = add_in_sequence (scop->original_schedule, s); } - if (schedule_error) - { - if (dump_file) - fprintf (dump_file, "[sese-to-poly] failed to build " - "original schedule\n"); - return false; - } - if (dump_file) { fprintf (dump_file, "[sese-to-poly] original schedule:\n"); -- cgit v1.1