From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-oi1-x22c.google.com (mail-oi1-x22c.google.com [IPv6:2607:f8b0:4864:20::22c]) by sourceware.org (Postfix) with ESMTPS id E9ADA382B5F4 for ; Thu, 9 Jun 2022 22:13:36 +0000 (GMT) DMARC-Filter: OpenDMARC Filter v1.4.1 sourceware.org E9ADA382B5F4 Received: by mail-oi1-x22c.google.com with SMTP id v143so10765010oie.13 for ; Thu, 09 Jun 2022 15:13:36 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to:cc; bh=1MqxwjS7dA7oosLs5LljInBNloEcdJbpCmnoI8h+nBQ=; b=54gZ7aoONTuZnW0ED5otQTtisMHd7aP7IDLvGFgGwwgkbcYfBSpbKHh4smsI2CSJTc 2nKS38TqZymvoCO8tko3AebUp9uvV60os/McjFKpMnRYU9mYOYLRMMScs9+x8phBgFRU j0+ccje/s3mu/NGkwFrjiMDLKpAbU647urrO63hZ8mG8Zwi6JmV0J8qVapyqOV8clbBW M3P6TknJa3qd0Y9oIUK77QEsB8QDqU/M6oZ7IIJNcoRQInEvq2KGUnqchrsH4KrY3cdU LXDTAYWymgJR+DqYaZZrNEcsDS/Ndu3xURdSEftMOVes8MM9kiSARqviB5KUJYfPFazU 4Otg== X-Gm-Message-State: AOAM531UvOZmajj0C1BCxPuFpyL7wWshwN1uFZjYHnh131A6Q47lUdSK feD1lA0Jx3UqZQXfNLjuXD5LL7Ns0bWPDuNnUhE= X-Google-Smtp-Source: ABdhPJwLZb/lLVwlbaFIagm0/ecqLSrACz+Jd6/fMjU6CJuJf9avfhwgUcEzNmhPrmsiaq9gHjtAEQLBnv0PzA8jQeU= X-Received: by 2002:aca:3203:0:b0:32e:b45e:131b with SMTP id y3-20020aca3203000000b0032eb45e131bmr2998879oiy.210.1654812816241; Thu, 09 Jun 2022 15:13:36 -0700 (PDT) MIME-Version: 1.0 References: <0d69cc30-47f6-0bbd-c482-5a5c60a37252@yahoo.co.jp> In-Reply-To: <0d69cc30-47f6-0bbd-c482-5a5c60a37252@yahoo.co.jp> From: Max Filippov Date: Thu, 9 Jun 2022 15:13:25 -0700 Message-ID: Subject: Re: [PATCH 4/4] xtensa: Add clrsbsi2 insn pattern To: "Takayuki 'January June' Suwa" Cc: GCC Patches Content-Type: text/plain; charset="UTF-8" X-Spam-Status: No, score=-0.8 required=5.0 tests=BAYES_00, DKIM_SIGNED, DKIM_VALID, DKIM_VALID_AU, DKIM_VALID_EF, FREEMAIL_FROM, FROM_LOCAL_NOVOWEL, HK_RANDOM_ENVFROM, HK_RANDOM_FROM, RCVD_IN_DNSWL_NONE, SPF_HELO_NONE, SPF_PASS, TXREP, T_SCC_BODY_TEXT_LINE autolearn=no autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on server2.sourceware.org X-BeenThere: gcc-patches@gcc.gnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Gcc-patches mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 09 Jun 2022 22:13:38 -0000 On Sun, May 29, 2022 at 4:00 AM Takayuki 'January June' Suwa wrote: > > > (clrsb:m x) > > Represents the number of redundant leading sign bits in x, represented > > as an integer of mode m, starting at the most significant bit position. > > This explanation is just what the NSA instruction (not ever emitted before) > calculates in Xtensa ISA. > > gcc/ChangeLog: > > * config/xtensa/xtensa.md (clrsbsi2): New insn pattern. > > libgcc/ChangeLog: > > * config/xtensa/lib1funcs.S (__clrsbsi2): New function. > * config/xtensa/t-xtensa (LIB1ASMFUNCS): Add _clrsbsi2. > --- > gcc/config/xtensa/xtensa.md | 12 +++++++++++- > libgcc/config/xtensa/lib1funcs.S | 23 +++++++++++++++++++++++ > libgcc/config/xtensa/t-xtensa | 2 +- > 3 files changed, 35 insertions(+), 2 deletions(-) Regtested for target=xtensa-linux-uclibc, no new regressions. Committed to master. -- Thanks. -- Max