From patchwork Thu Nov 26 10:33:06 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Ilya Enkovich X-Patchwork-Id: 549004 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Received: from sourceware.org (server1.sourceware.org [209.132.180.131]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 2DEA9140291 for ; Thu, 26 Nov 2015 21:33:50 +1100 (AEDT) Authentication-Results: ozlabs.org; dkim=pass (1024-bit key; unprotected) header.d=gcc.gnu.org header.i=@gcc.gnu.org header.b=sAJL4M3W; dkim-atps=neutral DomainKey-Signature: a=rsa-sha1; c=nofws; d=gcc.gnu.org; h=list-id :list-unsubscribe:list-archive:list-post:list-help:sender:date :from:to:subject:message-id:mime-version:content-type; q=dns; s= default; b=LMaK4uLhVsJIGDsbUO3cSWTi0Gqb5IWg5tuFz0E+iHMK3p+pni87q V2RrGyeqh+ploMb1oxLT03D4GSdy3cgISbQEEq5GgTlJuzISTjifc0BtNRyLuy4M 7eeSn7njIDgBlAKUvrtl6FepGZZXABGBv+hbnLCZhLIEBNigC1lwEo= DKIM-Signature: v=1; a=rsa-sha1; c=relaxed; d=gcc.gnu.org; h=list-id :list-unsubscribe:list-archive:list-post:list-help:sender:date :from:to:subject:message-id:mime-version:content-type; s= default; bh=melKbIaYHR6h83koAmu/0x/R4o4=; b=sAJL4M3W52pfsMcy5vS5 XNIVDD0G1kQJGuvKeH79LSrp7xomvrvLW4VyPG1Z2eP29PFEeR1hoqLSwHgzjwse TiGiJ7mYNODtmmmH17kuGV/B1zMCbEOM3MhFHy9LOuLOOD+amSNeUIavxv3grjHs Gfbie+wqYgxam3WtXMfqzIE= Received: (qmail 71613 invoked by alias); 26 Nov 2015 10:33:42 -0000 Mailing-List: contact gcc-patches-help@gcc.gnu.org; run by ezmlm Precedence: bulk List-Id: List-Unsubscribe: List-Archive: List-Post: List-Help: Sender: gcc-patches-owner@gcc.gnu.org Delivered-To: mailing list gcc-patches@gcc.gnu.org Received: (qmail 71589 invoked by uid 89); 26 Nov 2015 10:33:38 -0000 Authentication-Results: sourceware.org; auth=none X-Virus-Found: No X-Spam-SWARE-Status: No, score=-2.5 required=5.0 tests=AWL, BAYES_00, FREEMAIL_FROM, RCVD_IN_DNSWL_LOW, SPF_PASS autolearn=ham version=3.3.2 X-HELO: mail-wm0-f45.google.com Received: from mail-wm0-f45.google.com (HELO mail-wm0-f45.google.com) (74.125.82.45) by sourceware.org (qpsmtpd/0.93/v0.84-503-g423c35a) with (AES128-GCM-SHA256 encrypted) ESMTPS; Thu, 26 Nov 2015 10:33:37 +0000 Received: by wmec201 with SMTP id c201so16541870wme.1 for ; Thu, 26 Nov 2015 02:33:34 -0800 (PST) X-Received: by 10.28.59.131 with SMTP id i125mr2930046wma.75.1448534014853; Thu, 26 Nov 2015 02:33:34 -0800 (PST) Received: from msticlxl57.ims.intel.com (jfdmzpr05-ext.jf.intel.com. [134.134.139.74]) by smtp.gmail.com with ESMTPSA id u139sm2021004wmu.22.2015.11.26.02.33.32 for (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Thu, 26 Nov 2015 02:33:34 -0800 (PST) Date: Thu, 26 Nov 2015 13:33:06 +0300 From: Ilya Enkovich To: gcc-patches@gcc.gnu.org Subject: [PATCH, i386] Use scalar mask for 16-byte and 32-byte vectors when possible Message-ID: <20151126103306.GB10638@msticlxl57.ims.intel.com> MIME-Version: 1.0 Content-Disposition: inline User-Agent: Mutt/1.5.23 (2014-03-12) X-IsSubscribed: yes Hi, This patch allows usage of scalar masks for ymm and xmm registers when target supports it. Bootstrapped and regtested on x86_64-unknown-linux-gnu. OK for trunk? Thanks, Ilya --- gcc/ 2015-11-26 Ilya Enkovich * config/i386/i386.c (ix86_get_mask_mode): Use scalar modes for 32 and 16 byte vectors when possible. gcc/testsuite/ 2015-11-26 Ilya Enkovich * gcc.dg/vect/vect-32-chars.c: New test. diff --git a/gcc/config/i386/i386.c b/gcc/config/i386/i386.c index 83749d5..d7c359f 100644 --- a/gcc/config/i386/i386.c +++ b/gcc/config/i386/i386.c @@ -53443,7 +53443,8 @@ ix86_get_mask_mode (unsigned nunits, unsigned vector_size) unsigned elem_size = vector_size / nunits; /* Scalar mask case. */ - if (TARGET_AVX512F && vector_size == 64) + if ((TARGET_AVX512F && vector_size == 64) + || (TARGET_AVX512VL && (vector_size == 32 || vector_size == 16))) { if (elem_size == 4 || elem_size == 8 || TARGET_AVX512BW) return smallest_mode_for_size (nunits, MODE_INT); diff --git a/gcc/testsuite/gcc.dg/vect/vect-32-chars.c b/gcc/testsuite/gcc.dg/vect/vect-32-chars.c new file mode 100644 index 0000000..0af5d2d --- /dev/null +++ b/gcc/testsuite/gcc.dg/vect/vect-32-chars.c @@ -0,0 +1,16 @@ +/* { dg-do compile } */ +/* { dg-additional-options "-mavx512bw -mavx512vl" { target { i?86-*-* x86_64-*-* } } } */ + +char a[32]; +char b[32]; +char c[32]; + +void test() +{ + int i = 0; + for (i = 0; i < 32; i++) + if (b[i] > 0) + a[i] = c[i]; +} + +/* { dg-final { scan-tree-dump "vectorized 1 loops" "vect" { target { i?86-*-* x86_64-*-* } } } } */