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This patch provides optimized versions of strncpy and wcsncpy with the z13
vector instructions.
ChangeLog:
* sysdeps/s390/multiarch/strncpy-vx.S: New File.
* sysdeps/s390/multiarch/strncpy.c: Likewise.
* sysdeps/s390/multiarch/wcsncpy-c.c: Likewise.
* sysdeps/s390/multiarch/wcsncpy-vx.S: Likewise.
* sysdeps/s390/multiarch/wcsncpy.c: Likewise.
* sysdeps/s390/s390-32/multiarch/strncpy.c: Likewise.
* sysdeps/s390/s390-64/multiarch/strncpy.c: Likewise.
* sysdeps/s390/multiarch/Makefile (sysdep_routines): Add strncpy and
wcsncpy functions.
* wcsmbs/wcsncpy.c: Use WCSNCPY if defined.
* sysdeps/s390/multiarch/ifunc-impl-list.c
(__libc_ifunc_impl_list): Add ifunc test for strncpy, wcsncpy.
* string/test-strncpy.c: Add wcsncpy support.
* wcsmbs/test-wcsncpy.c: New File.
* wcsmbs/Makefile (strop-tests): Add wcsncpy.
* benchtests/bench-strncpy.c: Add wcsncpy support.
* benchtests/bench-wcsncpy.c: New File.
* benchtests/Makefile (wcsmbs-bench): Add wcsncpy
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Switch the string benchmarks to using bench-timing.h instead
of hp-timing.h directly. This allows the string benchmarks to
be run usefully on architectures such as ARM that do not have
support for hp-timing.h.
In order to do this the tests have been changed from timing each
individual call and picking the lowest execution time recorded to
timing a number of calls and taking the mean execution time.
ChangeLog:
2013-09-04 Will Newton <will.newton@linaro.org>
* benchtests/bench-timing.h (TIMING_PRINT_MEAN): New macro.
* benchtests/bench-string.h: Include bench-timing.h instead
of including hp-timing.h directly. (INNER_LOOP_ITERS): New
define. (HP_TIMING_BEST): Delete macro. (test_init): Remove
call to HP_TIMING_DIFF_INIT.
* benchtests/bench-memccpy.c: Use bench-timing.h macros
instead of hp-timing.h macros.
* benchtests/bench-memchr.c: Likewise.
* benchtests/bench-memcmp.c: Likewise.
* benchtests/bench-memcpy.c: Likewise.
* benchtests/bench-memmem.c: Likewise.
* benchtests/bench-memmove.c: Likewise.
* benchtests/bench-memset.c: Likewise.
* benchtests/bench-rawmemchr.c: Likewise.
* benchtests/bench-strcasecmp.c: Likewise.
* benchtests/bench-strcasestr.c: Likewise.
* benchtests/bench-strcat.c: Likewise.
* benchtests/bench-strchr.c: Likewise.
* benchtests/bench-strcmp.c: Likewise.
* benchtests/bench-strcpy.c: Likewise.
* benchtests/bench-strcpy_chk.c: Likewise.
* benchtests/bench-strlen.c: Likewise.
* benchtests/bench-strncasecmp.c: Likewise.
* benchtests/bench-strncat.c: Likewise.
* benchtests/bench-strncmp.c: Likewise.
* benchtests/bench-strncpy.c: Likewise.
* benchtests/bench-strnlen.c: Likewise.
* benchtests/bench-strpbrk.c: Likewise.
* benchtests/bench-strrchr.c: Likewise.
* benchtests/bench-strspn.c: Likewise.
* benchtests/bench-strstr.c: Likewise.
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Copy over already existing string performance tests into benchtests.
Bits not related to performance measurements have been omitted.
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