Date: Mon, 8 Feb 2021 22:08:07 +0000 From: Alexander Richardson <arichardson@freebsd.org> To: Jessica Clarke <jrtc27@freebsd.org> Cc: Mateusz Guzik <mjg@freebsd.org>, src-committers <src-committers@freebsd.org>, dev-commits-src-all@freebsd.org, dev-commits-src-main@freebsd.org Subject: Re: git: 81e074d57dfc - main - libkern: use compiler builtins for strcpy, strcmp and strlen Message-ID: <CA%2BZ_v8q6DhnDNqc-Y%2BNap8HdErRaxgbqV4wVsRiZL%2B%2BrdMYMqg@mail.gmail.com> In-Reply-To: <8F5A406F-FB06-4D52-8CD7-1DCE01B6C126@freebsd.org> References: <202102081915.118JFVS0067851@gitrepo.freebsd.org> <8F5A406F-FB06-4D52-8CD7-1DCE01B6C126@freebsd.org>
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On Mon, 8 Feb 2021, 19:37 Jessica Clarke, <jrtc27@freebsd.org> wrote: > On 8 Feb 2021, at 19:15, Mateusz Guzik <mjg@FreeBSD.org> wrote: > > > > The branch main has been updated by mjg: > > > > URL: > https://cgit.FreeBSD.org/src/commit/?id=81e074d57dfcd86f152e2848dc44b77087ee7a2d > > > > commit 81e074d57dfcd86f152e2848dc44b77087ee7a2d > > Author: Mateusz Guzik <mjg@FreeBSD.org> > > AuthorDate: 2021-02-07 19:50:25 +0000 > > Commit: Mateusz Guzik <mjg@FreeBSD.org> > > CommitDate: 2021-02-08 19:15:21 +0000 > > > > libkern: use compiler builtins for strcpy, strcmp and strlen > > Why? > I guess because the kernel uses -ffreestanding, so the libcall inlining optimization requires explicit uses of __builtin_foo Alex >
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