From mboxrd@z Thu Jan 1 00:00:00 1970 X-Spam-Checker-Version: SpamAssassin 3.4.4 (2020-01-24) on polar.synack.me X-Spam-Level: X-Spam-Status: No, score=-1.9 required=5.0 tests=BAYES_00 autolearn=unavailable autolearn_force=no version=3.4.4 Path: eternal-september.org!reader01.eternal-september.org!reader02.eternal-september.org!news.eternal-september.org!news.eternal-september.org!.POSTED!not-for-mail From: "J-P. Rosen" Newsgroups: comp.lang.ada Subject: Re: avoiding builtin memset Date: Thu, 27 Apr 2017 06:35:53 +0200 Organization: A noiseless patient Spider Message-ID: References: <934912c8-c189-4d36-8a96-b2aa97e38685@googlegroups.com> Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 8bit Injection-Date: Thu, 27 Apr 2017 04:32:43 -0000 (UTC) Injection-Info: mx02.eternal-september.org; posting-host="99c5a9737e4a633080cf4eeb8cc89fbc"; logging-data="4193"; mail-complaints-to="abuse@eternal-september.org"; posting-account="U2FsdGVkX18+/X5PurxA2fPE66EDUQaX" User-Agent: Mozilla/5.0 (Windows NT 10.0; WOW64; rv:45.0) Gecko/20100101 Thunderbird/45.8.0 In-Reply-To: Cancel-Lock: sha1:FkC+9X+Qd1q0uef48qhVC9y8ick= Xref: news.eternal-september.org comp.lang.ada:46639 Date: 2017-04-27T06:35:53+02:00 List-Id: Le 27/04/2017 à 02:22, Jere a écrit : >> For Element of Memory loop >> Element := Value; >> end loop; > > I'll be honest, I wasn't expecting it to avoid memset (didn't see why > it should), but it didn't recursively call it. It did however, do a > very interesting loop unroll: > [...] What if you replace the loop with: Memory := (others => Value); ? -- J-P. Rosen Adalog 2 rue du Docteur Lombard, 92441 Issy-les-Moulineaux CEDEX Tel: +33 1 45 29 21 52, Fax: +33 1 45 29 25 00 http://www.adalog.fr