From patchwork Wed Mar 30 12:27:41 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Tom de Vries X-Patchwork-Id: 52472 Return-Path: X-Original-To: patchwork@sourceware.org Delivered-To: patchwork@sourceware.org Received: from server2.sourceware.org (localhost [IPv6:::1]) by sourceware.org (Postfix) with ESMTP id 58EAA385DC31 for ; Wed, 30 Mar 2022 12:28:13 +0000 (GMT) DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org 58EAA385DC31 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gcc.gnu.org; s=default; t=1648643293; bh=qD8KmOjv44GniMfzcm4HEir4Td2A0xvqRgah0WvXVYI=; h=Date:To:References:Subject:In-Reply-To:List-Id:List-Unsubscribe: List-Archive:List-Post:List-Help:List-Subscribe:From:Reply-To:Cc: From; b=wqMzl6x5OpmBbiszeD7HprHpeW967l/Vyt1le5RWg5jR0hXn2BcEIgD6c4Vr8tbkk ZRP1zvIj6ZhE8uDvonRVBAxctg97Hg5NVBJ9MX7/5zJznuTLcGKZBLJdMBBokg5lHp a50v+5Wzz8kjPhakIidzdfcJsFDUq6KwESAjoYCY= X-Original-To: gcc-patches@gcc.gnu.org Delivered-To: gcc-patches@gcc.gnu.org Received: from smtp-out1.suse.de (smtp-out1.suse.de [195.135.220.28]) by sourceware.org (Postfix) with ESMTPS id B24D23858405 for ; Wed, 30 Mar 2022 12:27:43 +0000 (GMT) DMARC-Filter: OpenDMARC Filter v1.4.1 sourceware.org B24D23858405 Received: from imap2.suse-dmz.suse.de (imap2.suse-dmz.suse.de [192.168.254.74]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (P-521) server-digest SHA512) (No client certificate requested) by smtp-out1.suse.de (Postfix) with ESMTPS id 7712F210DB; Wed, 30 Mar 2022 12:27:42 +0000 (UTC) Received: from imap2.suse-dmz.suse.de (imap2.suse-dmz.suse.de [192.168.254.74]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (P-521) server-digest SHA512) (No client certificate requested) by imap2.suse-dmz.suse.de (Postfix) with ESMTPS id 4802013A60; Wed, 30 Mar 2022 12:27:42 +0000 (UTC) Received: from dovecot-director2.suse.de ([192.168.254.65]) by imap2.suse-dmz.suse.de with ESMTPSA id jQ1WEL5MRGIbNwAAMHmgww (envelope-from ); Wed, 30 Mar 2022 12:27:42 +0000 Message-ID: Date: Wed, 30 Mar 2022 14:27:41 +0200 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:91.0) Gecko/20100101 Thunderbird/91.7.0 Content-Language: en-US To: Tobias Burnus , gcc-patches References: <1ffa4e66-af1a-4392-795a-31a8f0047c92@codesourcery.com> Subject: [wwwdocs][patch] gcc-12: Nvptx updates. In-Reply-To: <1ffa4e66-af1a-4392-795a-31a8f0047c92@codesourcery.com> X-Spam-Status: No, score=-12.2 required=5.0 tests=BAYES_00, DKIM_SIGNED, DKIM_VALID, DKIM_VALID_AU, DKIM_VALID_EF, GIT_PATCH_0, KAM_ASCII_DIVIDERS, KAM_SHORT, SPF_HELO_NONE, SPF_PASS, TXREP, T_SCC_BODY_TEXT_LINE autolearn=ham autolearn_force=no version=3.4.4 X-Spam-Checker-Version: SpamAssassin 3.4.4 (2020-01-24) 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-Patchwork-Original-From: Tom de Vries via Gcc-patches From: Tom de Vries Reply-To: Tom de Vries Cc: Thomas Schwinge , Roger Sayle Errors-To: gcc-patches-bounces+patchwork=sourceware.org@gcc.gnu.org Sender: "Gcc-patches" [ was: Re: [wwwdocs][patch] gcc-12/changes.html: Document -misa update for nvptx ] On 3/3/22 13:27, Tobias Burnus wrote: > The current wording, https://gcc.gnu.org/gcc-12/changes.html#nvptx , > is outdated and (now wrongly) encourages to use -mptx=. > > Updated as follows. I've taken these changes as a base, revised and added some more items. Any comments? Also, feel free to instead comment on the full-text version below (copied from firefox after opening the page), that might be more readable. Thanks, - Tom ----------------------------------------------------------------------------- NVPTX The -march flag has been added. The -misa flag is now considered an alias of the -march flag. Support for PTX ISA target architectures sm_53, sm_70, sm_75 and sm_80 has been added. These can be specified using the -march flag. The default PTX ISA target architecture has been set back to sm_30, to fix support for sm_30 boards. The -march-map flag has been added. The -march-map value will be mapped to an valid -march flag value. For instance, -march-map=sm_50 maps to -march=sm_35. This can be used to specify that generated code is to be executed on a board with at least some specific compute capability, without having to know the valid values for the -march flag. The -mptx flag has been added to specify the PTX ISA version for the generated code; permitted values are 3.1 (matches previous GCC versions), 6.0, 6.3, and 7.0. If not specified, the used version is the minimal version required for -march but at least 6.0. An mptx-3.1 multilib was added. This allows using older drivers which do not support PTX ISA version 6.0. The new __PTX_SM__ predefined macro allows code to check the PTX ISA target architecture being targeted by the compiler. The new __PTX_ISA_VERSION_MAJOR__ and __PTX_ISA_VERSION_MINOR__ predefined macros allows code to check the PTX ISA version being targeted by the compiler. ----------------------------------------------------------------------------- gcc-12: Nvptx updates. Co-Authored-By: Tobias Burnus --- htdocs/gcc-12/changes.html | 25 +++++++++++++++++++++++-- 1 file changed, 23 insertions(+), 2 deletions(-) diff --git a/htdocs/gcc-12/changes.html b/htdocs/gcc-12/changes.html index 689feeba..d95f7253 100644 --- a/htdocs/gcc-12/changes.html +++ b/htdocs/gcc-12/changes.html @@ -493,12 +493,33 @@ a work-in-progress.

NVPTX

    +
  • The -march flag has been added. The -misa + flag is now considered an alias of the -march flag.
    • +
  • Support for PTX ISA target architectures sm_53, + sm_70, sm_75 and sm_80 has been + added. These can be specified using the -march flag.
    • +
  • The default PTX ISA target architecture has been set back + to sm_30, to fix support for sm_30 boards.
    • +
  • The -march-map flag has been added. The + -march-map value will be mapped to an valid + -march flag value. For instance, + -march-map=sm_50 maps to -march=sm_35. + This can be used to specify that generated code is to be executed on a + board with at least some specific compute capability, without having to + know the valid values for the -march flag.
  • The -mptx flag has been added to specify the PTX ISA version for the generated code; permitted values are 3.1 - (default, matches previous GCC versions) and 6.3. + (matches previous GCC versions), 6.0, 6.3, + and 7.0. If not specified, the used version is the minimal + version required for -march but at least 6.0.
    • +
  • An mptx-3.1 multilib was added. This allows using older + drivers which do not support PTX ISA version 6.0.
  • The new __PTX_SM__ predefined macro allows code to check the - compute model being targeted by the compiler.
    • + PTX ISA target architecture being targeted by the compiler. +
  • The new __PTX_ISA_VERSION_MAJOR__ + and __PTX_ISA_VERSION_MINOR__ predefined macros allows code + to check the PTX ISA version being targeted by the compiler.