diff options
| author | rguenth <rguenth@138bc75d-0d04-0410-961f-82ee72b054a4> | 2012-07-18 10:46:05 +0000 |
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| committer | rguenth <rguenth@138bc75d-0d04-0410-961f-82ee72b054a4> | 2012-07-18 10:46:05 +0000 |
| commit | cfa724cfa2af2ff3b5fe23dd4a737410c7001f70 (patch) | |
| tree | a29a811549836915e77e5838f455d345d6548dd7 /gcc/tree-vect-data-refs.c | |
| parent | 3482bf1319f9e65a4783bbe9d5b59c11312888db (diff) | |
| download | gcc-cfa724cfa2af2ff3b5fe23dd4a737410c7001f70.tar.gz | |
2012-07-18 Richard Guenther <rguenther@suse.de>
PR tree-optimization/53970
* tree.h (contains_packed_reference): Remove.
* expr.c (contains_packed_reference): Likewise.
* tree-vect-data-refs.c (not_size_aligned): New function.
(vector_alignment_reachable_p): Use it.
(vect_supportable_dr_alignment): Likewise.
* g++.dg/torture/pr53970.C: New testcase.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@189609 138bc75d-0d04-0410-961f-82ee72b054a4
Diffstat (limited to 'gcc/tree-vect-data-refs.c')
| -rw-r--r-- | gcc/tree-vect-data-refs.c | 24 |
1 files changed, 16 insertions, 8 deletions
diff --git a/gcc/tree-vect-data-refs.c b/gcc/tree-vect-data-refs.c index dd0752e69cf..147fa902cd6 100644 --- a/gcc/tree-vect-data-refs.c +++ b/gcc/tree-vect-data-refs.c @@ -1131,6 +1131,18 @@ vect_verify_datarefs_alignment (loop_vec_info loop_vinfo, bb_vec_info bb_vinfo) return true; } +/* Given an memory reference EXP return whether its alignment is less + than its size. */ + +static bool +not_size_aligned (tree exp) +{ + if (!host_integerp (TYPE_SIZE (TREE_TYPE (exp)), 1)) + return true; + + return (tree_low_cst (TYPE_SIZE (TREE_TYPE (exp)), 1) + > get_object_alignment (exp)); +} /* Function vector_alignment_reachable_p @@ -1184,12 +1196,8 @@ vector_alignment_reachable_p (struct data_reference *dr) if (!known_alignment_for_access_p (dr)) { - tree type = (TREE_TYPE (DR_REF (dr))); - bool is_packed = contains_packed_reference (DR_REF (dr)); - - if (compare_tree_int (TYPE_SIZE (type), TYPE_ALIGN (type)) > 0) - is_packed = true; - + tree type = TREE_TYPE (DR_REF (dr)); + bool is_packed = not_size_aligned (DR_REF (dr)); if (vect_print_dump_info (REPORT_DETAILS)) fprintf (vect_dump, "Unknown misalignment, is_packed = %d",is_packed); if (targetm.vectorize.vector_alignment_reachable (type, is_packed)) @@ -4863,7 +4871,7 @@ vect_supportable_dr_alignment (struct data_reference *dr, return dr_explicit_realign_optimized; } if (!known_alignment_for_access_p (dr)) - is_packed = contains_packed_reference (DR_REF (dr)); + is_packed = not_size_aligned (DR_REF (dr)); if (targetm.vectorize. support_vector_misalignment (mode, type, @@ -4877,7 +4885,7 @@ vect_supportable_dr_alignment (struct data_reference *dr, tree type = (TREE_TYPE (DR_REF (dr))); if (!known_alignment_for_access_p (dr)) - is_packed = contains_packed_reference (DR_REF (dr)); + is_packed = not_size_aligned (DR_REF (dr)); if (targetm.vectorize. support_vector_misalignment (mode, type, |