Re: [PATCH v4 3/3] powerpc/prom_init: Use -ffreestanding to avoid a reference to bcmp

[PATCH v3 0/3] LLVM/Clang fixes for pseries_defconfig · Nathan Chancellor <hidden> · 2019-09-11
[PATCH v3 1/3] powerpc: Don't add -mabi= flags when building with Clang · Nathan Chancellor <hidden> · 2019-09-11
[PATCH v3 2/3] powerpc: Avoid clang warnings around setjmp and longjmp · Nathan Chancellor <hidden> · 2019-09-11
Re: [PATCH v3 2/3] powerpc: Avoid clang warnings around setjmp and longjmp · Nick Desaulniers <hidden> · 2019-09-11
[PATCH v3 3/3] powerpc/prom_init: Use -ffreestanding to avoid a reference to bcmp · Nathan Chancellor <hidden> · 2019-09-11
Re: [PATCH v3 3/3] powerpc/prom_init: Use -ffreestanding to avoid a reference to bcmp · Nick Desaulniers <hidden> · 2019-09-11
Re: [PATCH v3 3/3] powerpc/prom_init: Use -ffreestanding to avoid a reference to bcmp · Nathan Chancellor <hidden> · 2019-09-12
Re: [PATCH v3 3/3] powerpc/prom_init: Use -ffreestanding to avoid a reference to bcmp · Nick Desaulniers <hidden> · 2019-09-12
[PATCH v4 0/3] LLVM/Clang fixes for pseries_defconfig · Nathan Chancellor <hidden> · 2019-10-14
[PATCH v4 2/3] powerpc: Avoid clang warnings around setjmp and longjmp · Nathan Chancellor <hidden> · 2019-10-14
[PATCH v4 3/3] powerpc/prom_init: Use -ffreestanding to avoid a reference to bcmp · Nathan Chancellor <hidden> · 2019-10-14
Re: [PATCH v4 3/3] powerpc/prom_init: Use -ffreestanding to avoid a reference to bcmp · Segher Boessenkool <hidden> · 2019-10-14
Re: [PATCH v4 3/3] powerpc/prom_init: Use -ffreestanding to avoid a reference to bcmp · Nick Desaulniers <hidden> · 2019-10-14
Re: [PATCH v4 3/3] powerpc/prom_init: Use -ffreestanding to avoid a reference to bcmp · Segher Boessenkool <hidden> · 2019-10-14
Re: [PATCH v4 3/3] powerpc/prom_init: Use -ffreestanding to avoid a reference to bcmp · Nathan Chancellor <hidden> · 2019-10-18
Re: [PATCH v4 3/3] powerpc/prom_init: Use -ffreestanding to avoid a reference to bcmp · Segher Boessenkool <hidden> · 2019-10-18
Re: [PATCH v4 3/3] powerpc/prom_init: Use -ffreestanding to avoid a reference to bcmp · Nathan Chancellor <hidden> · 2019-10-22
Re: [PATCH v4 3/3] powerpc/prom_init: Use -ffreestanding to avoid a reference to bcmp · Segher Boessenkool <hidden> · 2019-10-22
Re: [PATCH v4 3/3] powerpc/prom_init: Use -ffreestanding to avoid a reference to bcmp · Nathan Chancellor <hidden> · 2019-10-30
[PATCH v4 1/3] powerpc: Don't add -mabi= flags when building with Clang · Nathan Chancellor <hidden> · 2019-10-14
Re: [PATCH v4 0/3] LLVM/Clang fixes for pseries_defconfig · Nick Desaulniers <hidden> · 2019-10-14
[PATCH v5 0/3] LLVM/Clang fixes for a few defconfigs · Nathan Chancellor <hidden> · 2019-11-19
[PATCH v5 1/3] powerpc: Don't add -mabi= flags when building with Clang · Nathan Chancellor <hidden> · 2019-11-19
Re: [PATCH v5 1/3] powerpc: Don't add -mabi= flags when building with Clang · Michael Ellerman <hidden> · 2019-11-26
[PATCH v5 2/3] powerpc: Avoid clang warnings around setjmp and longjmp · Nathan Chancellor <hidden> · 2019-11-19
[PATCH v5 3/3] powerpc/prom_init: Use -ffreestanding to avoid a reference to bcmp · Nathan Chancellor <hidden> · 2019-11-19
Re: [PATCH v5 0/3] LLVM/Clang fixes for a few defconfigs · Nick Desaulniers <hidden> · 2019-11-25
Re: [PATCH v5 0/3] LLVM/Clang fixes for a few defconfigs · Michael Ellerman <mpe@ellerman.id.au> · 2019-11-28
Re: [PATCH v5 0/3] LLVM/Clang fixes for a few defconfigs · Nathan Chancellor <hidden> · 2019-11-28

From: Segher Boessenkool <hidden>
Date: 2019-10-14 09:35:29
Also in: lkml

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

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