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This patch provides optimized versions of strcat and wcscat with the z13
vector instructions.
ChangeLog:
* sysdeps/s390/multiarch/strcat-c.c: New File.
* sysdeps/s390/multiarch/strcat-vx.S: Likewise.
* sysdeps/s390/multiarch/strcat.c: Likewise.
* sysdeps/s390/multiarch/wcscat-c.c: Likewise.
* sysdeps/s390/multiarch/wcscat-vx.S: Likewise.
* sysdeps/s390/multiarch/wcscat.c: Likewise.
* sysdeps/s390/multiarch/Makefile (sysdep_routines): Add strcat and
wcscat functions.
* sysdeps/s390/multiarch/ifunc-impl-list.c
(__libc_ifunc_impl_list): Add ifunc test for strcat, wcscat.
* string/strcat.c (STRCAT): Define and use macro.
* wcsmbs/wcscat.c: Use WCSCAT if defined.
* string/test-strcat.c: Add wcscat support.
* wcsmbs/test-wcscat.c: New File.
* wcsmbs/Makefile (strop-tests): Add wcscat.
* benchtests/bench-strcat.c: Add wcscat support.
* benchtests/bench-wcscat.c: New File.
* benchtests/Makefile (wcsmbs-bench): Add wcscat.
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has a fast C
implementation, so this improves performance even on targets which don't have an optimized
strlen and strcpy - it is 25% faster in bench-strcat. On targets which don't provide an
optimized strcat but which do have an optimized strlen and strcpy, performance gain is > 2x.
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Clean up string functions that do not have a version in gnulib on
the assumption that glibc is the canonical upstream copy of this
code. basename has a copy in gnulib but it is largely written to
handle Windows paths so merging it is not really viable. The changes
mostly consist of switching to ANSI function prototypes and removing
unused includes.
As many of these functions do not get built in a typical build due
to architecture optimized versions being used instead I built these
by hand to verify there were no build warnings and the code was
identical.
2014-04-07 Will Newton <will.newton@linaro.org>
* string/basename.c [HAVE_CONFIG_H]: Remove #ifdef and
and contents. [!_LIBC] Remove #ifndef and contents.
(basename): Use ANSI prototype. [_LIBC] Remove #idef.
* string/memccpy.c (__memccpy): Use ANSI prototype.
* string/memfrob.c (memfrob): Likewise.
* string/strcoll.c (STRCOLL): Likewise.
* string/strlen.c (strlen): Likewise.
* string/strtok.c (STRTOK): Likewise.
* string/strcat.c: Remove unused #include of memcopy.h.
(strcat): Use ANSI prototype.
* string/strchr.c: Remove unused #include of memcopy.h.
(strchr): Use ANSI prototype.
* string/strcmp.c: Remove unused #include of memcopy.h.
(strcmp): Use ANSI prototype.
* string/strcpy.c: Remove unused #include of memcopy.h.
(strcpy): Use ANSI prototype.
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* sysdeps/generic/memcopy.h (reg_char): Delete.
* debug/strcat_chk.c: Use char, not reg_char.
* debug/strcpy_chk.c: Likewise.
* debug/strncat_chk.c: Likewise.
* debug/strncpy_chk.c: Likewise.
* string/memchr.c: Likewise.
* string/memrchr.c: Likewise.
* string/rawmemchr.c: Likewise.
* string/strcat.c: Likewise.
* string/strchr.c: Likewise.
* string/strchrnul.c: Likewise.
* string/strcmp.c: Likewise.
* string/strcpy.c: Likewise.
* string/strncat.c: Likewise.
* string/strncmp.c: Likewise.
* string/strncpy.c: Likewise.
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