From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: by sourceware.org (Postfix, from userid 1666) id 611543858438; Fri, 23 Feb 2024 07:31:25 +0000 (GMT) DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org 611543858438 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gcc.gnu.org; s=default; t=1708673485; bh=RAERwzsri2w9O1d0LMfaAsJlKIrPg15terJFWuHEtdQ=; h=From:To:Subject:Date:From; b=S6vzZLGyk0OcPlt7u125aov7MyauKwlcRM+ZU7cNYPyuHfae3/sJ9WevmQppIm3OQ OsG5Pfi0pEo62xNtPK4VqlnQMGiTodIZGtpScTeBsXHEm9LKi3vmbo/HwKm7P2eMeR wF6xA3FRxycDmY7gE0TUxPOKH4zkf/4ikVvRrSjw= 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: 248bd7d8308449d4c40f7f49bb51f0aec03b6adb X-Git-Newrev: 305009b272b20c08eff8573445ccf70198170def Message-Id: <20240223073125.611543858438@sourceware.org> Date: Fri, 23 Feb 2024 07:31:25 +0000 (GMT) List-Id: https://gcc.gnu.org/g:305009b272b20c08eff8573445ccf70198170def commit 305009b272b20c08eff8573445ccf70198170def 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 35f1f8c7d424..405c7fb16180 100644 --- a/gcc/tree-vect-loop.cc +++ b/gcc/tree-vect-loop.cc @@ -2855,8 +2855,10 @@ 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;