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Re: [PATCH 0/6] powerpc: multiarch cleanups
- From: Adhemerval Zanella <azanella at linux dot vnet dot ibm dot com>
- To: libc-alpha at sourceware dot org
- Date: Mon, 09 Feb 2015 11:22:28 -0200
- Subject: Re: [PATCH 0/6] powerpc: multiarch cleanups
- Authentication-results: sourceware.org; auth=none
- References: <54BFD064 dot 1050001 at linux dot vnet dot ibm dot com>
I pushed upstream as:
1016993 powerpc: wordcopy/memmove cleanup for ppc32
8548a53 powerpc: multiarch Makefile cleanup for powerpc32
b269211 powerpc: wordcopy/memmove cleanup for ppc64
18e270a powerpc: Remove POWER7 wordcopy ifunc
6f0993a powerpc: Simplify bcopy default implementation
3001e54 powerpc: multiarch Makefile cleanup for powerpc64
On 21-01-2015 14:14, Adhemerval Zanella wrote:
> Hi,
>
> This is something I had in my backlog and it is mainly code organization
> and cleanup. The idea is the initial IFUNC support for powerpc64 and
> powerpc32 added internal IFUNC workcopy functions (_wordcopy_*) meant
> to be used by memmove implementation. However, POWER7 currently
> provides optimized memmove (at least for powerpc64) and these symbols
> are meant to be use only for memmove/bcopy. A better approach would
> be just build them and calling locally by specific memmove/bcopy
> implementation.
>
> So this patch set removes the wordcopy IFUNC implementation and simplify
> both memmove and bcopy for powerpc64 and powerpc32. For powerpc64 I do
> not think it is worth to provide a power4/power6 memmmove based on
> default algorithm, although it could a possible future enhancement.
>
> The patchset is meant to be pushed when 2.22 opens. Tested on powerpc64,
> powerpc64le, and powerpc32.
>
> --
>
> sysdeps/powerpc/powerpc32/power4/multiarch/Makefile | 14 ++++++++++----
> sysdeps/powerpc/powerpc32/power4/multiarch/memmove-power7.c | 11 +++++++++++
> sysdeps/powerpc/powerpc32/power4/multiarch/memmove-ppc.c | 11 +++++++++++
> sysdeps/powerpc/powerpc32/power4/multiarch/wordcopy-power6.c | 23 -----------------------
> sysdeps/powerpc/powerpc32/power4/multiarch/wordcopy-ppc32.c | 14 +++++++++-----
> sysdeps/powerpc/powerpc32/power4/multiarch/wordcopy.c | 86 --------------------------------------------------------------------------------------
> sysdeps/powerpc/powerpc64/multiarch/Makefile | 19 +++++++++++--------
> sysdeps/powerpc/powerpc64/multiarch/bcopy-ppc64.c | 10 ++++++----
> sysdeps/powerpc/powerpc64/multiarch/memmove-ppc64.c | 18 ++++++++++++++++--
> sysdeps/powerpc/powerpc64/multiarch/wordcopy-power6.c | 19 -------------------
> sysdeps/powerpc/powerpc64/multiarch/wordcopy-power7.c | 19 -------------------
> sysdeps/powerpc/powerpc64/multiarch/wordcopy.c | 86 --------------------------------------------------------------------------------------
>