[PATCH] elf: Remove -fno-tree-loop-distribute-patterns usage on dl-support

[H.J. Lu]

On Tue, Aug 9, 2022 at 5:11 AM Adhemerval Zanella Netto
<adhemerval.zanella@linaro.org> wrote:
>
>
>
> On 08/08/22 19:16, H.J. Lu wrote:
>
> >> --- a/sysdeps/x86_64/multiarch/memset-evex-unaligned-erms.S
> >> +++ b/sysdeps/x86_64/multiarch/memset-evex-unaligned-erms.S
> >> @@ -44,4 +44,7 @@
> >>
> >>  # define USE_LESS_VEC_MASK_STORE       1
> >>  # include "memset-vec-unaligned-erms.S"
> >> +# if !defined NO_MULTIARCH && MINIMUM_X86_ISA_LEVEL >= 4
> >> +strong_alias (__memset_evex_unaligned, __memset_generic)
> >> +# endif
> >>  #endif
> >
> > This will define 2 __memset_generic for -march=x86-64-v4.
>
> Are you sure? Check with a x86_64 build with -march=x86-64-v4 I am seeing:
>
> $ readelf -Ws string/memset*.os | grep -w __memset_generic | wc -l
> 1
>
> And it is indeed provided only by string/memset-evex-unaligned-erms.os.

You are right.  Since dl-symbol-hacks.h defines memset to an alias,
should it be moved to sysdes/generic and each arch can provide a
suitable alias?

-- 
H.J.