From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-lf1-x12b.google.com (mail-lf1-x12b.google.com [IPv6:2a00:1450:4864:20::12b]) by sourceware.org (Postfix) with ESMTPS id 5D9243858C35 for ; Mon, 6 Nov 2023 07:21:01 +0000 (GMT) DMARC-Filter: OpenDMARC Filter v1.4.2 sourceware.org 5D9243858C35 Authentication-Results: sourceware.org; dmarc=pass (p=none dis=none) header.from=gmail.com Authentication-Results: sourceware.org; spf=pass smtp.mailfrom=gmail.com ARC-Filter: OpenARC Filter v1.0.0 sourceware.org 5D9243858C35 Authentication-Results: server2.sourceware.org; arc=none smtp.remote-ip=2a00:1450:4864:20::12b ARC-Seal: i=1; a=rsa-sha256; d=sourceware.org; s=key; t=1699255262; cv=none; b=LRElx1PG+LT4m0Z+4mpEvyPXLkAW9i8/zKLMWfiKQLKHDQ1CmI69QO9FPC57dKUBkae7c0gpaCpi4RrJbnx17tYuKrDcIbQJN8TkjYBB9Sl4GuWBDw9PAW3P4odXZQZElqkQlprckxRJRwCMpMbC6B+G7dmr+moWmyrmgoRAd14= ARC-Message-Signature: i=1; a=rsa-sha256; d=sourceware.org; s=key; t=1699255262; c=relaxed/simple; bh=ByMHJg/RhqrCKq3P2Eo1+p/0shVou0fotUyyymE1ei0=; h=DKIM-Signature:MIME-Version:From:Date:Message-ID:Subject:To; b=FbwElx7BXcatLnbZD1A80VVJpavnFwhfhqunXvsb6U4E2SmneUvLNp5yQBXxlE9BwI9oZ2y72+Z6T0dOcw3SThGCMQm3luERmvBKzP1Jm9qdvcYR2j/YRffNTiM3watWp8oeNqoCnbqW8YrFw/eqiEhgK/uc93ASjjlU3buaedk= ARC-Authentication-Results: i=1; server2.sourceware.org Received: by mail-lf1-x12b.google.com with SMTP id 2adb3069b0e04-50943ccbbaeso5888454e87.2 for ; Sun, 05 Nov 2023 23:21:01 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1699255259; x=1699860059; darn=gcc.gnu.org; h=content-transfer-encoding:to:subject:message-id:date:from :in-reply-to:references:mime-version:from:to:cc:subject:date :message-id:reply-to; bh=Mq5jQtCRHLb/MZlkYtuqmacuw8Jg1L5P3Ro37vKK8TM=; b=SmLv2jZW4claSthelfR1DghLTn6svmJJaQJ4AZMV2c5NIykUeuhnmHyFXGXKohmOWh SZVlmyB7PRG32FiY95U+N75dp+X7B3aCV5eJyWuiA4FwbODa2ZsyZJmUzwTTyAhIgoBp N+u/XgS+F0tV85JKaLI1SF75TDOEKKpjRO5pWkfmAtiBSP8xQnQeFXGmKvdU1FdSxSSc vPjDUJQPkUN1Sj0DGg4i7J5UMfLNIUEwHBNPkrSmlWrFImw94xDG32mui9f+44Ojt333 SLjB3Roh1VosEb17BxPg7XIFLH/VBw47LbwVxknsQN4FtsuFPJBY+IGBJ9V9/FWLlTNT rF4Q== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1699255259; x=1699860059; h=content-transfer-encoding:to:subject:message-id:date:from :in-reply-to:references:mime-version:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=Mq5jQtCRHLb/MZlkYtuqmacuw8Jg1L5P3Ro37vKK8TM=; b=a4B0o3vk4SU/cPdMLqTHpwrZ+JLCUA5lNj4/mrnsgnSIS3/0rtZC4fYiZ1Rq5uRwle WtlzpeH3VEcHBBGz+KrWCELs3ARxxqh0n/GK6+aHcI6fsR1VAbcW2XjQKK74ob7+BDGO 6r3+afB4k76nfuZIP0VC+g8f22Ti99qEzMKoqzVZ+dAxHr8k2MJQJ44IisGxx/qggzat 5YzPuOIZaAqBBeAv0iLrn+1nIYOgKY9rpm+WhHz3zbdDlNMcnnr30HvHo8XBC7iUGfOV RABmTvPAYQ1XvgvIDwFoy0uErAlWM2LEbVZYCsC9zTjiUq1sHROhaUEtlAU6PuN425a4 j57A== X-Gm-Message-State: AOJu0Yzss6sTzkOmCp3Y/UcIr0RrXFM1ZiDzQyH0/ZDcez5n/mh3pXrN Nd/X5BH6WpyIrqOxdgFVD99mtIKcP9uqHedCfVHTL6Wg X-Google-Smtp-Source: AGHT+IEcLQNCEgzWusnR+/wd/+fAeXNg+WF7KBXQltFzPXBsWLJXYn8ds0MCHPbKq8DkAK8rA0qCKeq8sSS3Cl5Wf+4= X-Received: by 2002:a05:6512:1307:b0:509:4025:1ac6 with SMTP id x7-20020a056512130700b0050940251ac6mr14767235lfu.54.1699255258919; Sun, 05 Nov 2023 23:20:58 -0800 (PST) MIME-Version: 1.0 References: In-Reply-To: From: Richard Biener Date: Mon, 6 Nov 2023 08:17:37 +0100 Message-ID: Subject: Re: [PATCH] explow: Avoid unnecessary alignment operations To: gcc-patches@gcc.gnu.org, richard.sandiford@arm.com Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable X-Spam-Status: No, score=-7.4 required=5.0 tests=BAYES_00,DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,FREEMAIL_FROM,GIT_PATCH_0,RCVD_IN_DNSWL_NONE,SPF_HELO_NONE,SPF_PASS,TXREP,T_SCC_BODY_TEXT_LINE autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on server2.sourceware.org List-Id: On Sun, Nov 5, 2023 at 7:33=E2=80=AFPM Richard Sandiford wrote: > > align_dynamic_address would output alignment operations even > for a required alignment of 1 byte. > > Tested on aarch64-linux-gnu & x86_64-linux-gnu. OK to install? OK > Richard > > > gcc/ > * explow.cc (align_dynamic_address): Do nothing if the required > alignment is a byte. > --- > gcc/explow.cc | 3 +++ > 1 file changed, 3 insertions(+) > > diff --git a/gcc/explow.cc b/gcc/explow.cc > index aa64d5e906c..0be6d2629c9 100644 > --- a/gcc/explow.cc > +++ b/gcc/explow.cc > @@ -1201,6 +1201,9 @@ record_new_stack_level (void) > rtx > align_dynamic_address (rtx target, unsigned required_align) > { > + if (required_align =3D=3D BITS_PER_UNIT) > + return target; > + > /* CEIL_DIV_EXPR needs to worry about the addition overflowing, > but we know it can't. So add ourselves and then do > TRUNC_DIV_EXPR. */ > -- > 2.25.1 >