[PATCH] PowerPC: optimized strcspn for POWER7

[Steven Munroe]

On Sat, 2014-03-08 at 18:18 -0300, Adhemerval Zanella wrote:
> I am resending this patch to keep track using the patchwork and with
> some corrections (string/strpbrk.c cleanup and the no need to align
> stack, since stack is already aligned to 16 bytes in PPC64 abi).
> 
> This patch add a optimized strcspn for POWER7 by using a different
> algorithm than default implementation: it constructs a table based on
> the 'accept' argument and use this table to check for any occurance
> on the input string. The idea is similar as x86_64 uses.
> For PowerPC some tunings were added, such as unroll loops and align
> stack memory to table to 16 bytes (so VSX clean can ran without
> alignment issues).
> 
> --
> 
> 2014-03-08  Adhemerval Zanella  <azanella@linux.vnet.ibm.com>
> 
>         * string/strcspn.c (strcspn): Using macro to redefine symbol name.
>         * sysdeps/powerpc/powerpc64/multiarch/Makefile: Add strcspn-power7
> 	and strcspn-ppc64 objects.
> 	* sysdeps/powerpc/powerpc64/multiarch/ifunc-impl-list.c
> 	(__libc_ifunc_impl_list): Add new strcspn optimized symbols.
> 	* sysdeps/powerpc/powerpc64/multiarch/strcspn-power7.S: New file:
> 	multiarch strcspn for POWER7.
> 	* sysdeps/powerpc/powerpc64/multiarch/strcspn-ppc64.c: New file:
> 	multiarch strcspn for PPC64.
> 	* sysdeps/powerpc/powerpc64/multiarch/strcspn.c: New file: strcspn
> 	ifunc selector.
> 	* sysdeps/powerpc/powerpc64/power7/strcspn.S: New file: optimited
> 	strcspn for POWER7.
> 
> ---

Looks good.