From 798f5b4b5d24e5687dd55acc535954ed1d59c10c Mon Sep 17 00:00:00 2001 From: Stefan Liebler Date: Wed, 26 Aug 2015 10:26:26 +0200 Subject: 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. --- sysdeps/s390/multiarch/memrchr.c | 28 ++++++++++++++++++++++++++++ 1 file changed, 28 insertions(+) create mode 100644 sysdeps/s390/multiarch/memrchr.c (limited to 'sysdeps/s390/multiarch/memrchr.c') diff --git a/sysdeps/s390/multiarch/memrchr.c b/sysdeps/s390/multiarch/memrchr.c new file mode 100644 index 0000000..8ac2f52 --- /dev/null +++ b/sysdeps/s390/multiarch/memrchr.c @@ -0,0 +1,28 @@ +/* Multiple versions of memrchr. + 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 + . */ + +#if defined HAVE_S390_VX_ASM_SUPPORT && IS_IN (libc) +# include +# include + +s390_vx_libc_ifunc (__memrchr) +weak_alias (__memrchr, memrchr) + +#else +# include +#endif /* !(defined HAVE_S390_VX_ASM_SUPPORT && IS_IN (libc)) */ -- cgit v1.1