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| author | Richard Biener <rguenther@suse.de> | 2024-02-23 16:16:38 +0100 |
|---|---|---|
| committer | Richard Biener <rguenther@suse.de> | 2024-06-06 08:55:56 +0200 |
| commit | 28edeb1409a7b839407ec06031899b933390bff3 (patch) | |
| tree | 983b327dcdee47eda60c58fdbd46279df261a184 /gcc | |
| parent | 6a6bab4ba36c5d190b3151055e683e7067be92c1 (diff) | |
| download | gcc-28edeb1409a7b839407ec06031899b933390bff3.zip gcc-28edeb1409a7b839407ec06031899b933390bff3.tar.gz gcc-28edeb1409a7b839407ec06031899b933390bff3.tar.bz2 | |
Relax COND_EXPR reduction vectorization SLP restriction
Allow one-lane SLP but for the case where we need to swap the arms.
* tree-vect-stmts.cc (vectorizable_condition): Allow
single-lane SLP, but not when we need to swap then and
else clause.
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/tree-vect-stmts.cc | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/gcc/tree-vect-stmts.cc b/gcc/tree-vect-stmts.cc index b26cc74..c82381e 100644 --- a/gcc/tree-vect-stmts.cc +++ b/gcc/tree-vect-stmts.cc @@ -12116,7 +12116,7 @@ vectorizable_condition (vec_info *vinfo, = STMT_VINFO_REDUC_DEF (vect_orig_stmt (stmt_info)) != NULL; if (for_reduction) { - if (slp_node) + if (slp_node && SLP_TREE_LANES (slp_node) > 1) return false; reduc_info = info_for_reduction (vinfo, stmt_info); reduction_type = STMT_VINFO_REDUC_TYPE (reduc_info); @@ -12205,6 +12205,10 @@ vectorizable_condition (vec_info *vinfo, cond_expr = NULL_TREE; } } + /* ??? The vectorized operand query below doesn't allow swapping + this way for SLP. */ + if (slp_node) + return false; std::swap (then_clause, else_clause); } |