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author | Adhemerval Zanella <azanella@linux.vnet.ibm.com> | 2014-12-23 13:39:23 -0500 |
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committer | Adhemerval Zanella <azanella@linux.vnet.ibm.com> | 2015-01-13 11:28:40 -0500 |
commit | 9f2f36e5a91c2ce6edba5415e176155eb1008ae1 (patch) | |
tree | f772f8f5005de041205a3f1ed0317ce5bf992fc6 /sysdeps/powerpc/powerpc64/multiarch/strncat-power7.c | |
parent | 94c9680945369d63ef9ed266a29f28ebaaaeb5ce (diff) | |
download | glibc-9f2f36e5a91c2ce6edba5415e176155eb1008ae1.tar.gz |
powerpc: Optimized strncat for POWER7/PPC64
With 3eb38795dbbbd816 (Simplify strncat) the generic algorithms uses
strlen, strnlen, and memcpy. This is faster than POWER7 current
implementation, especially for unaligned strings (where POWER7 code
uses byte-byte operations).
This patch removes the assembly implementation and uses a multiarch
specialization based on default algorithm calling optimized POWER7
symbols.
Diffstat (limited to 'sysdeps/powerpc/powerpc64/multiarch/strncat-power7.c')
-rw-r--r-- | sysdeps/powerpc/powerpc64/multiarch/strncat-power7.c | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/sysdeps/powerpc/powerpc64/multiarch/strncat-power7.c b/sysdeps/powerpc/powerpc64/multiarch/strncat-power7.c new file mode 100644 index 0000000000..39b1aebe9b --- /dev/null +++ b/sysdeps/powerpc/powerpc64/multiarch/strncat-power7.c @@ -0,0 +1,31 @@ +/* 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/ >. */ + +#include <string.h> + +#define STRNCAT __strncat_power7 + +extern __typeof (strncat) __strncat_power7 attribute_hidden; +extern __typeof (strlen) __strlen_power7 attribute_hidden; +extern __typeof (strnlen) __strnlen_power7 attribute_hidden; +extern __typeof (memcpy) __memcpy_power7 attribute_hidden; + +#define strlen __strlen_power7 +#define __strnlen __strnlen_power7 +#define memcpy __memcpy_power7 + +#include <string/strncat.c> |