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author | Feng Xue <fxue@os.amperecomputing.com> | 2018-08-09 04:38:03 -0400 |
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committer | Feng Xue <fxue@os.amperecomputing.com> | 2019-02-01 08:14:21 -0500 |
commit | 83d1cc42d8e6b18a4b6ba53addfdae98c694ea36 (patch) | |
tree | 31baf4b5309964aadf357cb81b21f5e6614a983e /localedata/README | |
parent | c7d3890ff51bceb38fac0947ce1f2bb0c34f6b15 (diff) | |
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aarch64: Optimized memchr specific to AmpereComputing emag
This version uses general register based memory instruction to load
data, because vector register based is slightly slower in emag.
Character-matching is performed on 16-byte (both size and alignment)
memory block in parallel each iteration.
* sysdeps/aarch64/memchr.S (__memchr): Rename to MEMCHR.
[!MEMCHR](MEMCHR): Set to __memchr.
* sysdeps/aarch64/multiarch/Makefile (sysdep_routines):
Add memchr_generic and memchr_nosimd.
* sysdeps/aarch64/multiarch/ifunc-impl-list.c
(__libc_ifunc_impl_list): Add memchr ifuncs.
* sysdeps/aarch64/multiarch/memchr.c: New file.
* sysdeps/aarch64/multiarch/memchr_generic.S: Likewise.
* sysdeps/aarch64/multiarch/memchr_nosimd.S: Likewise.
Diffstat (limited to 'localedata/README')
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