diff options
Diffstat (limited to 'gcc/tree-vect-data-refs.c')
| -rw-r--r-- | gcc/tree-vect-data-refs.c | 29 |
1 files changed, 12 insertions, 17 deletions
diff --git a/gcc/tree-vect-data-refs.c b/gcc/tree-vect-data-refs.c index c1b5826..bf0b510 100644 --- a/gcc/tree-vect-data-refs.c +++ b/gcc/tree-vect-data-refs.c @@ -1024,7 +1024,8 @@ vector_alignment_reachable_p (struct data_reference *dr) if (dump_enabled_p ()) dump_printf_loc (MSG_MISSED_OPTIMIZATION, vect_location, "Unknown misalignment, is_packed = %d",is_packed); - if (targetm.vectorize.vector_alignment_reachable (type, is_packed)) + if ((TYPE_USER_ALIGN (type) && !is_packed) + || targetm.vectorize.vector_alignment_reachable (type, is_packed)) return true; else return false; @@ -1323,7 +1324,6 @@ vect_enhance_data_refs_alignment (loop_vec_info loop_vinfo) bool stat; gimple stmt; stmt_vec_info stmt_info; - int vect_versioning_for_alias_required; unsigned int npeel = 0; bool all_misalignments_unknown = true; unsigned int vf = LOOP_VINFO_VECT_FACTOR (loop_vinfo); @@ -1510,15 +1510,8 @@ vect_enhance_data_refs_alignment (loop_vec_info loop_vinfo) } } - vect_versioning_for_alias_required - = LOOP_REQUIRES_VERSIONING_FOR_ALIAS (loop_vinfo); - - /* Temporarily, if versioning for alias is required, we disable peeling - until we support peeling and versioning. Often peeling for alignment - will require peeling for loop-bound, which in turn requires that we - know how to adjust the loop ivs after the loop. */ - if (vect_versioning_for_alias_required - || !vect_can_advance_ivs_p (loop_vinfo) + /* Check if we can possibly peel the loop. */ + if (!vect_can_advance_ivs_p (loop_vinfo) || !slpeel_can_duplicate_loop_p (loop, single_exit (loop))) do_peeling = false; @@ -4722,9 +4715,10 @@ vect_supportable_dr_alignment (struct data_reference *dr, if (!known_alignment_for_access_p (dr)) is_packed = not_size_aligned (DR_REF (dr)); - if (targetm.vectorize. - support_vector_misalignment (mode, type, - DR_MISALIGNMENT (dr), is_packed)) + if ((TYPE_USER_ALIGN (type) && !is_packed) + || targetm.vectorize. + support_vector_misalignment (mode, type, + DR_MISALIGNMENT (dr), is_packed)) /* Can't software pipeline the loads, but can at least do them. */ return dr_unaligned_supported; } @@ -4736,9 +4730,10 @@ vect_supportable_dr_alignment (struct data_reference *dr, if (!known_alignment_for_access_p (dr)) is_packed = not_size_aligned (DR_REF (dr)); - if (targetm.vectorize. - support_vector_misalignment (mode, type, - DR_MISALIGNMENT (dr), is_packed)) + if ((TYPE_USER_ALIGN (type) && !is_packed) + || targetm.vectorize. + support_vector_misalignment (mode, type, + DR_MISALIGNMENT (dr), is_packed)) return dr_unaligned_supported; } |