diff options
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/ChangeLog | 5 | ||||
| -rw-r--r-- | gcc/tree-ssa-loop-ivopts.c | 19 |
2 files changed, 24 insertions, 0 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index ea4912b..95d560c 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,5 +1,10 @@ 2017-05-11 Bin Cheng <bin.cheng@arm.com> + * tree-ssa-loop-ivopts.c (relate_compare_use_with_all_cands): New. + (find_iv_candidates): Call relate_compare_use_with_all_cands. + +2017-05-11 Bin Cheng <bin.cheng@arm.com> + * tree-ssa-loop-ivopts.c (struct iv_cand): New field inv_exprs. (dump_cand): Support iv_cand.inv_exprs. (add_candidate_1): Record invariant exprs in iv_cand.inv_exprs diff --git a/gcc/tree-ssa-loop-ivopts.c b/gcc/tree-ssa-loop-ivopts.c index 5d73916..d0757c3 100644 --- a/gcc/tree-ssa-loop-ivopts.c +++ b/gcc/tree-ssa-loop-ivopts.c @@ -5250,6 +5250,21 @@ set_autoinc_for_original_candidates (struct ivopts_data *data) } } +/* Relate compare use with all candidates. */ + +static void +relate_compare_use_with_all_cands (struct ivopts_data *data) +{ + unsigned i, max_id = data->vcands.length () - 1; + for (i = 0; i < data->vgroups.length (); i++) + { + struct iv_group *group = data->vgroups[i]; + + if (group->type == USE_COMPARE) + bitmap_set_range (group->related_cands, 0, max_id); + } +} + /* Finds the candidates for the induction variables. */ static void @@ -5269,6 +5284,10 @@ find_iv_candidates (struct ivopts_data *data) /* Record the important candidates. */ record_important_candidates (data); + /* Relate compare iv_use with all candidates. */ + if (!data->consider_all_candidates) + relate_compare_use_with_all_cands (data); + if (dump_file && (dump_flags & TDF_DETAILS)) { unsigned i; |