From: Adhemerval Zanella Netto <adhemerval.zanella@linaro.org>
To: "H.J. Lu" <hjl.tools@gmail.com>
Cc: GNU C Library <libc-alpha@sourceware.org>
Subject: Re: [PATCH] elf: Remove -fno-tree-loop-distribute-patterns usage on dl-support
Date: Tue, 9 Aug 2022 15:48:14 -0300 [thread overview]
Message-ID: <9e01cc4b-7acd-5719-6615-8fb3cb6bf80b@linaro.org> (raw)
In-Reply-To: <CAMe9rOpFM2F-Yv=FG41K-T=K37hnXMRoHaYOKS7k5TtdSFgjYw@mail.gmail.com>
On 09/08/22 15:31, H.J. Lu wrote:
> 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?
The dl-symbol-hacks.h is meant to be used solely by loader code (that's
why I have added to elf/), but I don't have a strong preference.
next prev parent reply other threads:[~2022-08-09 18:48 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-08-08 20:00 Adhemerval Zanella
2022-08-08 22:16 ` H.J. Lu
2022-08-09 12:11 ` Adhemerval Zanella Netto
2022-08-09 18:31 ` H.J. Lu
2022-08-09 18:48 ` Adhemerval Zanella Netto [this message]
2022-08-09 19:06 ` H.J. Lu
2022-08-09 19:32 ` Adhemerval Zanella Netto
2022-08-09 19:34 ` H.J. Lu
2022-08-09 19:40 ` Adhemerval Zanella Netto
2022-08-09 21:51 ` H.J. Lu
2022-08-10 13:12 ` Adhemerval Zanella Netto
2022-08-10 3:37 ` Noah Goldstein
2022-08-10 13:04 ` Adhemerval Zanella Netto
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