linux-kernel - Re: [PATCH v2] LoongArch: Replace -ffreestanding with finer-grained -fno-builtin's

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Message-ID: <CAKwvOdkJy12sZiqPyoZWb2-m4r5zywjo-cHkHGBu9XksU-RRxg@mail.gmail.com>
Date:   Mon, 7 Aug 2023 08:56:31 -0700
From:   Nick Desaulniers <ndesaulniers@...gle.com>
To:     Xi Ruoyao <xry111@...111.site>, WANG Xuerui <kernel@...0n.name>
Cc:     Huacai Chen <chenhuacai@...nel.org>,
        Nathan Chancellor <nathan@...nel.org>,
        loongarch@...ts.linux.dev, llvm@...ts.linux.dev,
        linux-kernel@...r.kernel.org, WANG Xuerui <git@...0n.name>
Subject: Re: [PATCH v2] LoongArch: Replace -ffreestanding with finer-grained -fno-builtin's

On Mon, Aug 7, 2023 at 12:17 AM Xi Ruoyao <xry111@...111.site> wrote:
>
> On Sun, 2023-08-06 at 18:31 +0800, WANG Xuerui wrote:
> > > > +cflags-y += -fno-builtin-memcpy -fno-builtin-memmove -fno-builtin-memset
>
> Can we only apply them for GCC <= 13?  I think with GCC 14 the built-in
> implementations are quite reasonable (well, maybe it's some human ego
> because I wrote them :).

Yes, and because only GCC-13 and older users should pay that penalty.

-- 
Thanks,
~Nick Desaulniers