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Marchesi" To: Richard Biener via Gcc-patches Cc: Kees Cook , Richard Biener , Richard Sandiford Subject: Re: [COMMITTED][patch][version 9]add -ftrivial-auto-var-init and variable attribute "uninitialized" to gcc References: <202109091605.8168A6AB4@keescook> Date: Fri, 10 Sep 2021 15:46:35 +0200 In-Reply-To: (Richard Biener via Gcc-patches's message of "Fri, 10 Sep 2021 09:23:44 +0200 (CEST)") Message-ID: <87v938sfus.fsf@oracle.com> User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/28.0.50 (gnu/linux) Content-Type: text/plain X-ClientProxiedBy: AM4PR0202CA0019.eurprd02.prod.outlook.com (2603:10a6:200:89::29) To BYAPR10MB2888.namprd10.prod.outlook.com (2603:10b6:a03:88::32) MIME-Version: 1.0 Received: from termi.oracle.com (141.143.193.69) by AM4PR0202CA0019.eurprd02.prod.outlook.com (2603:10a6:200:89::29) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.4500.14 via Frontend Transport; Fri, 10 Sep 2021 13:46:41 +0000 X-MS-PublicTrafficType: Email X-MS-Office365-Filtering-Correlation-Id: d64dd352-8b6b-49db-654e-08d974616c5f X-MS-TrafficTypeDiagnostic: BY5PR10MB4002: X-Microsoft-Antispam-PRVS: X-MS-Oob-TLC-OOBClassifiers: OLM:4714; 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Thank you so much for working on this, and thanks also to the >> reviewers and everyone else poking at it. >> >> I will go update my Linux Plumbers slides to say "supported" instead of >> "proposed". :) > > Can you two work on wording to add to gcc-12/changes.html for this > feature? I think it deserves a release note. Likewise the CTF/BTF > support btw. What about something like this for the BPF, CTF and BTF changes.. commit 3826495d1a2c265954d5da13ca71925eea390060 (HEAD -> master) Author: Jose E. Marchesi Date: Fri Sep 10 15:44:30 2021 +0200 gcc-12/changes.html: BPF, CTF and BTF update * htdocs/gcc-12/changes.html (BPF): Item about the CO-RE support. (Debugging formats): New section with items about the support for CTF and BTF. diff --git a/htdocs/gcc-12/changes.html b/htdocs/gcc-12/changes.html index 946faa49..936af979 100644 --- a/htdocs/gcc-12/changes.html +++ b/htdocs/gcc-12/changes.html @@ -143,6 +143,15 @@ a work-in-progress.

+

BPF

+
    +
  • Support for CO-RE (compile-once, run-everywhere) has been added + to the BPF backend. CO-RE allows to compile portable BPF + programs that are able to run among different versions of the + Linux kernel. +
    • +
+ @@ -210,7 +219,25 @@ a work-in-progress.

- +

Other significant improvements

+ +

Debugging formats

+ +
    +
  • GCC can now generate debugging information + in CTF, a lightweight debugging + format that provides information about C types and the + association between functions and data symbols and types. This + format is designed to be embedded in ELF files and to be very + compact and simple. A new command-line + option -gctf enables the generation of CTF. +
    • +
  • GCC can now generate debugging information in BTF. This is a + debugging format mainly used in BPF programs and the Linux + kernel. The compiler can generate BTF for any target, when + enabled with the command-line option -gbtf +
    • +