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author | Stefan Liebler <stli@linux.vnet.ibm.com> | 2015-08-26 10:26:26 +0200 |
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committer | Andreas Krebbel <krebbel@linux.vnet.ibm.com> | 2015-08-26 10:26:26 +0200 |
commit | 798f5b4b5d24e5687dd55acc535954ed1d59c10c (patch) | |
tree | 9af83d25772e08fddc0a252cf5e7be45af336057 /sysdeps/s390/multiarch/memrchr-c.c | |
parent | f21216015b7395c535abc01b9585a1ae3ceaa132 (diff) | |
download | glibc-798f5b4b5d24e5687dd55acc535954ed1d59c10c.tar.gz glibc-798f5b4b5d24e5687dd55acc535954ed1d59c10c.tar.xz glibc-798f5b4b5d24e5687dd55acc535954ed1d59c10c.zip |
S390: Optimize memrchr.
This patch provides optimized version of memrchr with the z13 vector instructions. ChangeLog: * sysdeps/s390/multiarch/memrchr-c.c: New File. * sysdeps/s390/multiarch/memrchr-vx.S: Likewise. * sysdeps/s390/multiarch/memrchr.c: Likewise. * sysdeps/s390/multiarch/Makefile (sysdep_routines): Add memrchr functions. * sysdeps/s390/multiarch/ifunc-impl-list-common.c (__libc_ifunc_impl_list_common): Add ifunc test for memrchr.
Diffstat (limited to 'sysdeps/s390/multiarch/memrchr-c.c')
-rw-r--r-- | sysdeps/s390/multiarch/memrchr-c.c | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/sysdeps/s390/multiarch/memrchr-c.c b/sysdeps/s390/multiarch/memrchr-c.c new file mode 100644 index 0000000000..ac481fdd5b --- /dev/null +++ b/sysdeps/s390/multiarch/memrchr-c.c @@ -0,0 +1,25 @@ +/* Default memrchr implementation for S/390. + Copyright (C) 2015 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; if not, see + <http://www.gnu.org/licenses/>. */ + +#if defined HAVE_S390_VX_ASM_SUPPORT && IS_IN (libc) +# define MEMRCHR __memrchr_c + +# include <string.h> +extern __typeof (__memrchr) __memrchr_c; +# include <string/memrchr.c> +#endif |