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Diffstat (limited to 'gcc/tree-loop-distribution.c')
| -rw-r--r-- | gcc/tree-loop-distribution.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/gcc/tree-loop-distribution.c b/gcc/tree-loop-distribution.c index 8b91a30..65aa1df 100644 --- a/gcc/tree-loop-distribution.c +++ b/gcc/tree-loop-distribution.c @@ -3203,6 +3203,16 @@ find_seed_stmts_for_distribution (class loop *loop, vec<gimple *> *work_list) /* Initialize the worklist with stmts we seed the partitions with. */ for (unsigned i = 0; i < loop->num_nodes; ++i) { + /* In irreducible sub-regions we don't know how to redirect + conditions, so fail. See PR100492. */ + if (bbs[i]->flags & BB_IRREDUCIBLE_LOOP) + { + if (dump_file && (dump_flags & TDF_DETAILS)) + fprintf (dump_file, "loop %d contains an irreducible region.\n", + loop->num); + work_list->truncate (0); + break; + } for (gphi_iterator gsi = gsi_start_phis (bbs[i]); !gsi_end_p (gsi); gsi_next (&gsi)) { |