diff options
| author | Richard Biener <rguenther@suse.de> | 2021-06-11 08:04:41 +0200 |
|---|---|---|
| committer | Richard Biener <rguenther@suse.de> | 2021-06-11 09:29:35 +0200 |
| commit | e9d322ced1433da8e7c69243cfa941ea462d6290 (patch) | |
| tree | 5e707e0c0a5c9801fbff482847fac2db8cc4d593 | |
| parent | 367f52dcc24045b072aeb26bc301a2980b39241f (diff) | |
| download | gcc-e9d322ced1433da8e7c69243cfa941ea462d6290.zip gcc-e9d322ced1433da8e7c69243cfa941ea462d6290.tar.gz gcc-e9d322ced1433da8e7c69243cfa941ea462d6290.tar.bz2 | |
Use stablesort for sorting association chain
This should preserve the original association order as much as possible
for the initial SLP discovery attempt and also improve consistency.
2021-06-11 Richard Biener <rguenther@suse.de>
* tree-vect-slp.c (vect_build_slp_tree_2): Use stablesort
to sort operands of the associative chain.
| -rw-r--r-- | gcc/tree-vect-slp.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/gcc/tree-vect-slp.c b/gcc/tree-vect-slp.c index c4f8f38..6237a61 100644 --- a/gcc/tree-vect-slp.c +++ b/gcc/tree-vect-slp.c @@ -1865,7 +1865,7 @@ vect_build_slp_tree_2 (vec_info *vinfo, slp_tree node, /* Now we have a set of chains with the same length. */ /* 1. pre-sort according to def_type and operation. */ for (unsigned lane = 0; lane < group_size; ++lane) - chains[lane].sort (dt_sort_cmp, vinfo); + chains[lane].stablesort (dt_sort_cmp, vinfo); if (dump_enabled_p ()) { dump_printf_loc (MSG_NOTE, vect_location, |