From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: by sourceware.org (Postfix, from userid 1666) id 9B30838582A3; Thu, 2 Nov 2023 13:59:30 +0000 (GMT) DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org 9B30838582A3 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gcc.gnu.org; s=default; t=1698933570; bh=pIC8+SQYnTK5wLfZ6okrTs7hLyKRHqm1GaJ9/wsWavk=; h=From:To:Subject:Date:From; b=g8rgIS52a1BnNLi8p2yJgtEDQxIQ04pVarEq3y6KUlZdCrBuBxv++Lha63cMTVK71 7m86inpr2N73RUzjiggVgJzhiQjkk9OiaVGYMK05zK/Op8xFMvZBCL9yPJtNaeP5hW R3SK8tSbSRO1hbF9cFN7ECLuMiNHChDnaH015EcM= 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)] Allow bigger SLP graphs X-Act-Checkin: gcc X-Git-Author: Richard Biener X-Git-Refname: refs/users/rguenth/heads/vect-force-slp X-Git-Oldrev: e34ba8d693265de0cfdca71e04e4becc5756afbc X-Git-Newrev: 4a2309e2599ee0dce49187ad89d90bf373950ee3 Message-Id: <20231102135930.9B30838582A3@sourceware.org> Date: Thu, 2 Nov 2023 13:59:30 +0000 (GMT) List-Id: https://gcc.gnu.org/g:4a2309e2599ee0dce49187ad89d90bf373950ee3 commit 4a2309e2599ee0dce49187ad89d90bf373950ee3 Author: Richard Biener Date: Fri Sep 29 13:05:01 2023 +0200 Allow bigger SLP graphs When doing single-lane SLP discovery only we're easily running into the SLP graph size limit when patterns are involved. The following ups the limit from the number of scalar stmts to the number of scalar or pattern stmts by using the number of stmt_vec_infos created. * tree-vect-loop.cc (vect_analyze_loop_2): Use the number of stmt_vec_infos created to limit the SLP graph size. Diff: --- gcc/tree-vect-loop.cc | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/gcc/tree-vect-loop.cc b/gcc/tree-vect-loop.cc index 3b28c826b3b9..77215a175a3e 100644 --- a/gcc/tree-vect-loop.cc +++ b/gcc/tree-vect-loop.cc @@ -2813,8 +2813,10 @@ vect_analyze_loop_2 (loop_vec_info loop_vinfo, bool &fatal, if (slp) { /* Check the SLP opportunities in the loop, analyze and build - SLP trees. */ - ok = vect_analyze_slp (loop_vinfo, LOOP_VINFO_N_STMTS (loop_vinfo)); + SLP trees. Use the number of stmt_vec_infos as graph limit + since that also includes pattern stmts which LOOP_VINFO_N_STMTS + does not. */ + ok = vect_analyze_slp (loop_vinfo, loop_vinfo->stmt_vec_infos.length ()); if (!ok) return ok;