From: Segher Boessenkool <segher@kernel.crashing.org>
To: Nathan Chancellor <natechancellor@gmail.com>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>,
Paul Mackerras <paulus@samba.org>,
Michael Ellerman <mpe@ellerman.id.au>,
clang-built-linux@googlegroups.com,
Nick Desaulniers <ndesaulniers@google.com>,
linuxppc-dev@lists.ozlabs.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH v4 3/3] powerpc/prom_init: Use -ffreestanding to avoid a reference to bcmp
Date: Mon, 14 Oct 2019 04:35:01 -0500 [thread overview]
Message-ID: <20191014093501.GE28442@gate.crashing.org> (raw)
In-Reply-To: <20191014025101.18567-4-natechancellor@gmail.com>
On Sun, Oct 13, 2019 at 07:51:01PM -0700, Nathan Chancellor wrote:
> r374662 gives LLVM the ability to convert certain loops into a reference
> to bcmp as an optimization; this breaks prom_init_check.sh:
When/why does LLVM think this is okay? This function has been removed
from POSIX over a decade ago (and before that it always was marked as
legacy).
Segher
WARNING: multiple messages have this Message-ID (diff)
From: Segher Boessenkool <segher@kernel.crashing.org>
To: Nathan Chancellor <natechancellor@gmail.com>
Cc: Nick Desaulniers <ndesaulniers@google.com>,
linux-kernel@vger.kernel.org, clang-built-linux@googlegroups.com,
Paul Mackerras <paulus@samba.org>,
linuxppc-dev@lists.ozlabs.org
Subject: Re: [PATCH v4 3/3] powerpc/prom_init: Use -ffreestanding to avoid a reference to bcmp
Date: Mon, 14 Oct 2019 04:35:01 -0500 [thread overview]
Message-ID: <20191014093501.GE28442@gate.crashing.org> (raw)
In-Reply-To: <20191014025101.18567-4-natechancellor@gmail.com>
On Sun, Oct 13, 2019 at 07:51:01PM -0700, Nathan Chancellor wrote:
> r374662 gives LLVM the ability to convert certain loops into a reference
> to bcmp as an optimization; this breaks prom_init_check.sh:
When/why does LLVM think this is okay? This function has been removed
from POSIX over a decade ago (and before that it always was marked as
legacy).
Segher
next prev parent reply other threads:[~2019-10-14 9:35 UTC|newest]
Thread overview: 57+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-09-11 18:20 [PATCH v3 0/3] LLVM/Clang fixes for pseries_defconfig Nathan Chancellor
2019-09-11 18:20 ` Nathan Chancellor
2019-09-11 18:20 ` [PATCH v3 1/3] powerpc: Don't add -mabi= flags when building with Clang Nathan Chancellor
2019-09-11 18:20 ` Nathan Chancellor
2019-09-11 18:20 ` [PATCH v3 2/3] powerpc: Avoid clang warnings around setjmp and longjmp Nathan Chancellor
2019-09-11 18:20 ` Nathan Chancellor
2019-09-11 20:55 ` Nick Desaulniers
2019-09-11 20:55 ` Nick Desaulniers
2019-09-11 18:20 ` [PATCH v3 3/3] powerpc/prom_init: Use -ffreestanding to avoid a reference to bcmp Nathan Chancellor
2019-09-11 18:20 ` Nathan Chancellor
2019-09-11 21:01 ` Nick Desaulniers
2019-09-11 21:01 ` Nick Desaulniers
2019-09-12 5:43 ` Nathan Chancellor
2019-09-12 5:43 ` Nathan Chancellor
2019-09-12 17:30 ` Nick Desaulniers
2019-09-12 17:30 ` Nick Desaulniers
2019-10-14 2:50 ` [PATCH v4 0/3] LLVM/Clang fixes for pseries_defconfig Nathan Chancellor
2019-10-14 2:50 ` Nathan Chancellor
2019-10-14 2:50 ` [PATCH v4 1/3] powerpc: Don't add -mabi= flags when building with Clang Nathan Chancellor
2019-10-14 2:50 ` Nathan Chancellor
2019-10-14 2:51 ` [PATCH v4 2/3] powerpc: Avoid clang warnings around setjmp and longjmp Nathan Chancellor
2019-10-14 2:51 ` Nathan Chancellor
2019-10-14 2:51 ` [PATCH v4 3/3] powerpc/prom_init: Use -ffreestanding to avoid a reference to bcmp Nathan Chancellor
2019-10-14 2:51 ` Nathan Chancellor
2019-10-14 9:35 ` Segher Boessenkool [this message]
2019-10-14 9:35 ` Segher Boessenkool
2019-10-14 15:56 ` Nick Desaulniers
2019-10-14 15:56 ` Nick Desaulniers
2019-10-14 19:11 ` Segher Boessenkool
2019-10-14 19:11 ` Segher Boessenkool
2019-10-18 19:00 ` Nathan Chancellor
2019-10-18 19:00 ` Nathan Chancellor
2019-10-18 20:02 ` Segher Boessenkool
2019-10-18 20:02 ` Segher Boessenkool
2019-10-22 5:15 ` Nathan Chancellor
2019-10-22 5:15 ` Nathan Chancellor
2019-10-22 8:57 ` Segher Boessenkool
2019-10-22 8:57 ` Segher Boessenkool
2019-10-30 4:12 ` Nathan Chancellor
2019-10-30 4:12 ` Nathan Chancellor
2019-10-14 16:03 ` [PATCH v4 0/3] LLVM/Clang fixes for pseries_defconfig Nick Desaulniers
2019-10-14 16:03 ` Nick Desaulniers
2019-11-19 4:57 ` [PATCH v5 0/3] LLVM/Clang fixes for a few defconfigs Nathan Chancellor
2019-11-19 4:57 ` Nathan Chancellor
2019-11-19 4:57 ` [PATCH v5 1/3] powerpc: Don't add -mabi= flags when building with Clang Nathan Chancellor
2019-11-19 4:57 ` Nathan Chancellor
2019-11-26 1:13 ` Michael Ellerman
2019-11-19 4:57 ` [PATCH v5 2/3] powerpc: Avoid clang warnings around setjmp and longjmp Nathan Chancellor
2019-11-19 4:57 ` Nathan Chancellor
2019-11-19 4:57 ` [PATCH v5 3/3] powerpc/prom_init: Use -ffreestanding to avoid a reference to bcmp Nathan Chancellor
2019-11-19 4:57 ` Nathan Chancellor
2019-11-25 20:15 ` [PATCH v5 0/3] LLVM/Clang fixes for a few defconfigs Nick Desaulniers
2019-11-25 20:15 ` Nick Desaulniers
2019-11-28 4:59 ` Michael Ellerman
2019-11-28 4:59 ` Michael Ellerman
2019-11-28 7:45 ` Nathan Chancellor
2019-11-28 7:45 ` Nathan Chancellor
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