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| author | Richard Biener <rguenther@suse.de> | 2024-11-21 09:14:53 +0100 |
|---|---|---|
| committer | Richard Biener <rguenth@gcc.gnu.org> | 2024-11-21 10:04:55 +0100 |
| commit | 7e9b0d90d363311caaa5a5e6edbb5088afe0308f (patch) | |
| tree | d26a4c0c613685b9ee4de8cd32a1d0d33a04ada5 /gcc | |
| parent | ab8d3606bbe67bce8900931e8b2a03d24c2b8beb (diff) | |
| download | gcc-7e9b0d90d363311caaa5a5e6edbb5088afe0308f.zip gcc-7e9b0d90d363311caaa5a5e6edbb5088afe0308f.tar.gz gcc-7e9b0d90d363311caaa5a5e6edbb5088afe0308f.tar.bz2 | |
tree-optimization/117720 - check alignment for VMAT_STRIDED_SLP
While vectorizable_store was already checking alignment requirement
of the stores and fall back to elementwise accesses if not honored
the vectorizable_load path wasn't doing this. After the previous
change to disregard alignment checking for VMAT_STRIDED_SLP in
get_group_load_store_type this now tripped on power.
PR tree-optimization/117720
* tree-vect-stmts.cc (vectorizable_load): For VMAT_STRIDED_SLP
verify the choosen load type is OK with regard to alignment.
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/tree-vect-stmts.cc | 16 |
1 files changed, 13 insertions, 3 deletions
diff --git a/gcc/tree-vect-stmts.cc b/gcc/tree-vect-stmts.cc index 522e9f7..75973c7 100644 --- a/gcc/tree-vect-stmts.cc +++ b/gcc/tree-vect-stmts.cc @@ -10650,9 +10650,19 @@ vectorizable_load (vec_info *vinfo, of it. */ if (n == const_nunits) { - nloads = 1; - lnel = const_nunits; - ltype = vectype; + int mis_align = dr_misalignment (first_dr_info, vectype); + dr_alignment_support dr_align + = vect_supportable_dr_alignment (vinfo, dr_info, vectype, + mis_align); + if (dr_align == dr_aligned + || dr_align == dr_unaligned_supported) + { + nloads = 1; + lnel = const_nunits; + ltype = vectype; + alignment_support_scheme = dr_align; + misalignment = mis_align; + } } /* Else use the biggest vector we can load the group without accessing excess elements. */ |