From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: by sourceware.org (Postfix, from userid 1666) id 7BB3E3858D1E; Fri, 23 Feb 2024 15:18:05 +0000 (GMT) DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org 7BB3E3858D1E DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gcc.gnu.org; s=default; t=1708701485; bh=f2YetcQzVSi6qAGYBAj1/CzuwXujdLeoNEHTnNNS+98=; h=From:To:Subject:Date:From; b=IxdP32alBRkmuSf0udo+xXY/Gk71vyzQiLQ6Q5FbKdLtQNZ2yA2D0kX+E/dDG5DpI db7Esss1bolAEQYld2YAX5QhUr8Vp37FJIjpfg6nt+bA1KTCTLwkJXa56pi+bQ24Bm FmiorfAZxy/cCUZk1qbxFFEw48fecxrUv12btHt8= Content-Type: text/plain; charset="us-ascii" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit From: Richard Biener To: gcc-cvs@gcc.gnu.org Subject: [gcc(refs/users/rguenth/heads/vect-force-slp)] Relax COND_EXPR reduction vectorization SLP restriction X-Act-Checkin: gcc X-Git-Author: Richard Biener X-Git-Refname: refs/users/rguenth/heads/vect-force-slp X-Git-Oldrev: c917156dc46220d47d491a348a2a813baf908065 X-Git-Newrev: 74e754175ab794a1c17fdf63fdc840b1f3ed62b5 Message-Id: <20240223151805.7BB3E3858D1E@sourceware.org> Date: Fri, 23 Feb 2024 15:18:05 +0000 (GMT) List-Id: https://gcc.gnu.org/g:74e754175ab794a1c17fdf63fdc840b1f3ed62b5 commit 74e754175ab794a1c17fdf63fdc840b1f3ed62b5 Author: Richard Biener Date: Fri Feb 23 16:16:38 2024 +0100 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. Diff: --- gcc/tree-vect-stmts.cc | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) diff --git a/gcc/tree-vect-stmts.cc b/gcc/tree-vect-stmts.cc index ba3871a819fc..efe406640254 100644 --- a/gcc/tree-vect-stmts.cc +++ b/gcc/tree-vect-stmts.cc @@ -12068,7 +12068,7 @@ 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); @@ -12157,6 +12157,10 @@ 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); }