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| author | Richard Biener <rguenther@suse.de> | 2024-06-07 09:41:11 +0200 |
|---|---|---|
| committer | Richard Biener <rguenther@suse.de> | 2024-06-07 11:40:56 +0200 |
| commit | dd6f942c266533b2f72610f354bc9184f8276beb (patch) | |
| tree | ef1698d6ae7f88f0f6c3996a88dc6cc4347ac526 | |
| parent | 94997567ea5cbeb35571e94cf76d7f99ea3f9c43 (diff) | |
| download | gcc-dd6f942c266533b2f72610f354bc9184f8276beb.zip gcc-dd6f942c266533b2f72610f354bc9184f8276beb.tar.gz gcc-dd6f942c266533b2f72610f354bc9184f8276beb.tar.bz2 | |
Fix fold-left reduction vectorization with multiple stmt copies
There's a typo when code generating the mask operand for conditional
fold-left reductions in the case we have multiple stmt copies. The
latter is now allowed for SLP and possibly disabled for non-SLP by
accident.
This fixes the observed run-FAIL for
gcc.dg/vect/vect-cond-reduc-in-order-2-signed-zero.c with AVX512
and 256bit sized vectors.
* tree-vect-loop.cc (vectorize_fold_left_reduction): Fix
mask vector operand indexing.
| -rw-r--r-- | gcc/tree-vect-loop.cc | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/gcc/tree-vect-loop.cc b/gcc/tree-vect-loop.cc index ceb9215..0286926 100644 --- a/gcc/tree-vect-loop.cc +++ b/gcc/tree-vect-loop.cc @@ -7217,7 +7217,7 @@ vectorize_fold_left_reduction (loop_vec_info loop_vinfo, if (LOOP_VINFO_FULLY_MASKED_P (loop_vinfo)) mask = vect_get_loop_mask (loop_vinfo, gsi, masks, vec_num, vectype_in, i); else if (is_cond_op) - mask = vec_opmask[0]; + mask = vec_opmask[i]; if (LOOP_VINFO_FULLY_WITH_LENGTH_P (loop_vinfo)) { len = vect_get_loop_len (loop_vinfo, gsi, lens, vec_num, vectype_in, |