From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: by sourceware.org (Postfix, from userid 1130) id A4EC33858D1E; Mon, 26 Jun 2023 12:48:46 +0000 (GMT) DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org A4EC33858D1E DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gcc.gnu.org; s=default; t=1687783726; bh=dboazg+tvwaHXuVnem77dG4jri0cGlQAOcpVCNH+A64=; h=From:To:Subject:Date:From; b=WMN7zrTa/OK50wIiFh3t3PP+872ihQQQmskUfA3E7ot8vtNM8fJzRf2krlIN9CrgF VMwRkqemK2Q8B0j6xz4arhgLZy5Uf12pZgIEot7iwZeJLNVVb27GMcKtqL/pTGOopo eMbqeDACtTTeFxKcPMiCLFkjbum1IiZmlPw8QRR4= MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Content-Type: text/plain; charset="utf-8" From: Richard Sandiford To: gcc-cvs@gcc.gnu.org Subject: [gcc r14-2096] vect: Cost intermediate conversions X-Act-Checkin: gcc X-Git-Author: Richard Sandiford X-Git-Refname: refs/heads/trunk X-Git-Oldrev: 53d6f57c1b20c6da52aefce737fb7d5263686ba3 X-Git-Newrev: 9302b0743b366037379af0568534c23ab597b4d4 Message-Id: <20230626124846.A4EC33858D1E@sourceware.org> Date: Mon, 26 Jun 2023 12:48:46 +0000 (GMT) List-Id: https://gcc.gnu.org/g:9302b0743b366037379af0568534c23ab597b4d4 commit r14-2096-g9302b0743b366037379af0568534c23ab597b4d4 Author: Richard Sandiford Date: Mon Jun 26 13:48:35 2023 +0100 vect: Cost intermediate conversions g:6f19cf7526168f8 extended N-vector to N-vector conversions to handle cases where an intermediate integer extension or truncation is needed. This patch adjusts the cost to account for these intermediate conversions. gcc/ * tree-vect-stmts.cc (vectorizable_conversion): Take multi_step_cvt into account when costing non-widening/truncating conversions. Diff: --- gcc/tree-vect-stmts.cc | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/gcc/tree-vect-stmts.cc b/gcc/tree-vect-stmts.cc index bf61461939b..b31971e99a4 100644 --- a/gcc/tree-vect-stmts.cc +++ b/gcc/tree-vect-stmts.cc @@ -5478,8 +5478,9 @@ vectorizable_conversion (vec_info *vinfo, if (modifier == NONE) { STMT_VINFO_TYPE (stmt_info) = type_conversion_vec_info_type; - vect_model_simple_cost (vinfo, stmt_info, ncopies, dt, ndts, slp_node, - cost_vec); + vect_model_simple_cost (vinfo, stmt_info, + ncopies * (1 + multi_step_cvt), + dt, ndts, slp_node, cost_vec); } else if (modifier == NARROW_SRC || modifier == NARROW_DST) {