From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-lj1-x22c.google.com (mail-lj1-x22c.google.com [IPv6:2a00:1450:4864:20::22c]) by sourceware.org (Postfix) with ESMTPS id 6CFE23858D32 for ; Thu, 25 May 2023 13:52:20 +0000 (GMT) DMARC-Filter: OpenDMARC Filter v1.4.2 sourceware.org 6CFE23858D32 Authentication-Results: sourceware.org; dmarc=pass (p=none dis=none) header.from=gmail.com Authentication-Results: sourceware.org; spf=pass smtp.mailfrom=gmail.com Received: by mail-lj1-x22c.google.com with SMTP id 38308e7fff4ca-2af2d092d7aso6565041fa.2 for ; Thu, 25 May 2023 06:52:20 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20221208; t=1685022739; x=1687614739; h=content-transfer-encoding:cc:to:subject:message-id:date:from :in-reply-to:references:mime-version:from:to:cc:subject:date :message-id:reply-to; bh=XVvXRpgIK0OeNVOIP1AtBpwHXurVDcJVk1Z5BoML6g8=; b=NzalLBkcF7n1RDd6Vubs3icujwWHPDbQ/y4VD1RBtqL61Yk7Fr/JIhCCNx2QSJDS48 353ZfKfgzZO7cHQ6u1g1c8ty2RIAad5/hxQc21xTvOMh/Eb50A66UJAjH+aknQmUuqL4 2QZy/XFEW3fTK5V2txas4e9D4NK0DdgdZ2qaunfv1pTbGOKcvXcq6kigeigjwCtt2KH1 PLKd/XfdN5l5vbSyhmlA8pKHy/gX93LBlZQiuqNPO39wZ0SziqtUy0poBm0dLVfFZgAt aBzdhHOhEWgglaL+nXKpk0+ehPM3yqilwphahgtK9nRO2FuqaoWrNmukBWtykyYkCoj0 SxOw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1685022739; x=1687614739; h=content-transfer-encoding:cc: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=XVvXRpgIK0OeNVOIP1AtBpwHXurVDcJVk1Z5BoML6g8=; b=c+TUAmX6FJnImZdMZO69zzUEofU1qhFf8EFI5Rj0V5JAAjaXUPwMnT3ba9xqHBiJFw pv3bZtQCH439vd2YCTRCVSfhq9np/ZVoAnsctq94NQj8QV4k/hFlb7Fv30NTF6fzRKzy cEYnB89ZVe8ZQGvZ06JdL25Pe/IpiZ302rkaE6azBAXp+XPa0d7F8Z3RjSkGbXCTKy0g LIG60dIWs/Cbxa6xlPwRkIKN0XKHpdR7a+1z0tPf9MLIvs/0TQpXVQNSSIhUHlMD/OfS nlF3jIrcYwqnSFN7mQRl3573S6L45RvGN2eDNKiipdxnAnlCnS98NZnK+4NByA5IAGCG 4gUw== X-Gm-Message-State: AC+VfDwTh1AP+hmxsnFQkGE8TkOwHcY4TKABUHs6wbwtxOhjm/O87M/L wWhOjniC50E5nyWpGcNWv8WuesirLaX10gbU6Co= X-Google-Smtp-Source: ACHHUZ4BDr99haQUD5cdskgWFJItVoRv4PFp+K8cZc/beoG6+I6lM24ZlDnqQwshffi5qepgJ47kthp0UP+YqpXm4QM= X-Received: by 2002:a2e:3604:0:b0:2a8:ae90:83d6 with SMTP id d4-20020a2e3604000000b002a8ae9083d6mr866423lja.48.1685022738678; Thu, 25 May 2023 06:52:18 -0700 (PDT) MIME-Version: 1.0 References: <20230525123550.1072506-1-manolis.tsamis@vrull.eu> <20230525123550.1072506-2-manolis.tsamis@vrull.eu> In-Reply-To: From: Richard Biener Date: Thu, 25 May 2023 15:50:11 +0200 Message-ID: Subject: Re: [PATCH 1/2] Implementation of new RISCV optimizations pass: fold-mem-offsets. To: Jeff Law Cc: gcc-patches@gcc.gnu.org Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable X-Spam-Status: No, score=-1.4 required=5.0 tests=BAYES_00,DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,FREEMAIL_FROM,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 Thu, May 25, 2023 at 3:32=E2=80=AFPM Jeff Law via Gcc-patches wrote: > > > > On 5/25/23 07:01, Richard Biener via Gcc-patches wrote: > > On Thu, May 25, 2023 at 2:36=E2=80=AFPM Manolis Tsamis wrote: > >> > >> Implementation of the new RISC-V optimization pass for memory offset > >> calculations, documentation and testcases. > > > > Why do fwprop or combine not what you want to do? > I think a lot of them end up coming from register elimination. Why isn't this a problem for other targets then? Or maybe it is and this shouldn't be a machine specific pass? Maybe postreload-gcse should perform strength reduction (I can't think of any other post reload pass that would do something even remotely related). Richard. > jeff