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| author | Richard Biener <rguenther@suse.de> | 2024-09-06 13:24:38 +0200 |
|---|---|---|
| committer | Richard Biener <rguenth@gcc.gnu.org> | 2024-09-06 14:15:04 +0200 |
| commit | ea9d4bf45ef906b990abdb101297e34366059f1c (patch) | |
| tree | 100d47f58e756e4cc1ab5d02f22512d85c9319d3 | |
| parent | 964577c31df206d780d5cc7bc07189d44de2719e (diff) | |
| download | gcc-ea9d4bf45ef906b990abdb101297e34366059f1c.zip gcc-ea9d4bf45ef906b990abdb101297e34366059f1c.tar.gz gcc-ea9d4bf45ef906b990abdb101297e34366059f1c.tar.bz2 | |
Fix SLP double-reduction support
When doing SLP discovery I forgot to handle double reductions even
though they are already queued in LOOP_VINFO_REDUCTIONS.
* tree-vect-slp.cc (vect_analyze_slp): Also handle discovery
for double reductions.
| -rw-r--r-- | gcc/tree-vect-slp.cc | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/gcc/tree-vect-slp.cc b/gcc/tree-vect-slp.cc index 3d29736..0fb1734 100644 --- a/gcc/tree-vect-slp.cc +++ b/gcc/tree-vect-slp.cc @@ -4652,7 +4652,9 @@ vect_analyze_slp (vec_info *vinfo, unsigned max_tree_size) reduction path. In that case we'd have to reverse engineer that conversion stmt following the chain using reduc_idx and from the PHI using reduc_def. */ - && STMT_VINFO_DEF_TYPE (next_info) == vect_reduction_def) + && (STMT_VINFO_DEF_TYPE (next_info) == vect_reduction_def + || (STMT_VINFO_DEF_TYPE (next_info) + == vect_double_reduction_def))) { /* Do not discover SLP reductions combining lane-reducing ops, that will fail later. */ |