From patchwork Mon Jun 8 17:19:04 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Andrew Senkevich X-Patchwork-Id: 7075 Received: (qmail 30438 invoked by alias); 8 Jun 2015 17:19:41 -0000 Mailing-List: contact libc-alpha-help@sourceware.org; run by ezmlm Precedence: bulk List-Id: List-Unsubscribe: List-Subscribe: List-Archive: List-Post: List-Help: , Sender: libc-alpha-owner@sourceware.org Delivered-To: mailing list libc-alpha@sourceware.org Received: (qmail 30429 invoked by uid 89); 8 Jun 2015 17:19:40 -0000 Authentication-Results: sourceware.org; auth=none X-Virus-Found: No X-Spam-SWARE-Status: No, score=-2.4 required=5.0 tests=AWL, BAYES_00, FREEMAIL_FROM, RCVD_IN_DNSWL_LOW, SPF_PASS autolearn=ham version=3.3.2 X-HELO: mail-la0-f46.google.com X-Received: by 10.112.42.16 with SMTP id j16mr17818398lbl.98.1433783975812; Mon, 08 Jun 2015 10:19:35 -0700 (PDT) MIME-Version: 1.0 In-Reply-To: References: From: Andrew Senkevich Date: Mon, 8 Jun 2015 20:19:04 +0300 Message-ID: Subject: Re: [PATCH 1/14] [x86_64] Vector math functions (vector cos) To: Joseph Myers Cc: libc-alpha 2015-06-08 20:08 GMT+03:00 Joseph Myers : > On Mon, 8 Jun 2015, Andrew Senkevich wrote: > >> diff --git a/NEWS b/NEWS >> index 881e61c..5e223a1 100644 >> --- a/NEWS >> +++ b/NEWS >> @@ -50,6 +50,14 @@ Version 2.22 >> * CVE-2014-8121 The NSS backends shared internal state between the getXXent >> and getXXbyYY NSS calls for the same database, causing a denial-of-service >> condition in some applications. >> + >> +* Added vector math library named libmvec with the following vectorized x86_64 >> + implementations: cos. >> + The library can be disabled with --disable-mathvec. Use of the functions is >> + enabled with -fopenmp -ffast-math starting from -O1 for GCC version >= 4.9.0. >> + The library is linked in as needed when using -lm (no need to specify -lmvec >> + explicitly). >> + Visit for detailed information. > > This seems reasonable as a starting point (given install.texi updated as > well). The release manager may wish to edit the NEWS entries, of course. Update of install.texi is: These options are for cross-compiling. If you specify both options and --- WBR, Andrew diff --git a/manual/install.texi b/manual/install.texi index bb09199..42ee467 100644 --- a/manual/install.texi +++ b/manual/install.texi @@ -181,6 +181,10 @@ version of GCC than this version of @theglibc{} was tested with, so new warnings cause the build with @option{-Werror} to fail), you can configure with @option{--disable-werror}. +@item --disable-mathvec +By default for x86_64, @theglibc{} is built with vector math library. +Use this option to disable vector math library. + @item --build=@var{build-system} @itemx --host=@var{host-system}