From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-pf1-x42e.google.com (mail-pf1-x42e.google.com [IPv6:2607:f8b0:4864:20::42e]) by sourceware.org (Postfix) with ESMTPS id 0DA7D3858C3A for ; Thu, 14 Oct 2021 13:24:09 +0000 (GMT) DMARC-Filter: OpenDMARC Filter v1.4.1 sourceware.org 0DA7D3858C3A Received: by mail-pf1-x42e.google.com with SMTP id y7so5442579pfg.8 for ; Thu, 14 Oct 2021 06:24:09 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:message-id:from:to:subject:date:mime-version :importance; bh=w9V8kEBWkAtS2kfagTkIdckSqvCtXrKuePK7yDPUlak=; b=353RzwC0c2irs9FcTGI1kjrBQPqyhJxIz3FEIatrmTcBwBwB2M98+BOTydk9O5M60L oAV5Oy4WjVk7GesOIjuKP1lthnYqiP9tn016ewvN9gZ/BHe00GXGYPaqKaZCMozBKoag qQByBuqe8FiCEVT6F/VeUYur/sdVj4JUl4tEU8AVNcPnbNr+MbxajSFyHJ0bB1W+oq01 J6maJttF3Gbida49FSv9tnZhTBR3PgGr8128MTkjLT3r49qHkfYZJymyFffHYJRW803n jvay4yilAP/xGUBOWjQREoYHyUYVVq0SDw6obAJaO6MSCtT1PXRAaUBS9WfWQms6EEUa 1EeQ== X-Gm-Message-State: AOAM532y7oUv/NekM0VxRsVuCeYAjnHq9s0Se/ijRVYwUTvMdihPQPUN GvwenF0jP3JcBXEK/vaJ7ZjTAaPv0MI= X-Google-Smtp-Source: ABdhPJwtTMDvBqpz0Gq0Reo5epflV8GSly8y02eKrdkSqdHJNs6dxkfxr2A8e42m/O1m42BEekjEkw== X-Received: by 2002:a63:6a05:: with SMTP id f5mr4210787pgc.97.1634217847697; Thu, 14 Oct 2021 06:24:07 -0700 (PDT) Received: from DESKTOPQV5ISEM ([202.169.113.201]) by smtp.gmail.com with ESMTPSA id z11sm2621640pfk.204.2021.10.14.06.24.05 for (version=TLS1_2 cipher=ECDHE-ECDSA-AES128-GCM-SHA256 bits=128/128); Thu, 14 Oct 2021 06:24:06 -0700 (PDT) Message-ID: <335E943550E9469993DBC1663087281F@DESKTOPQV5ISEM> From: "Paul Edwards" To: Subject: constraining index register Date: Fri, 15 Oct 2021 00:24:01 +1100 MIME-Version: 1.0 X-Priority: 3 X-MSMail-Priority: Normal Importance: Normal X-Mailer: Microsoft Windows Live Mail 16.4.3528.331 X-MimeOLE: Produced By Microsoft MimeOLE V16.4.3528.331 X-Antivirus: AVG (VPS 211014-2, 10/14/2021), Outbound message X-Antivirus-Status: Clean X-Spam-Status: No, score=2.1 required=5.0 tests=BAYES_50, DKIM_SIGNED, DKIM_VALID, DKIM_VALID_AU, DKIM_VALID_EF, FREEMAIL_FROM, HTML_IMAGE_ONLY_20, HTML_MESSAGE, HTML_SHORT_LINK_IMG_3, RCVD_IN_DNSWL_NONE, SPF_HELO_NONE, SPF_PASS, TXREP autolearn=no autolearn_force=no version=3.4.4 X-Spam-Level: ** X-Spam-Checker-Version: SpamAssassin 3.4.4 (2020-01-24) on server2.sourceware.org Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable X-Content-Filtered-By: Mailman/MimeDel 2.1.29 X-BeenThere: gcc@gcc.gnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Gcc mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 14 Oct 2021 13:24:10 -0000 Hi. In certain places, the i370 target of GCC 3.2.3 will use a base + index + displacement operand. How can I add a constraint to say that the index must be between 0 and 0x7fffffff? I want to stop 0xffffffff from being generated when I have: char *p p[-1]; Thanks. Paul. -- This email has been checked for viruses by AVG. https://www.avg.com