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| author | Anton Blanchard <anton@ozlabs.org> | 2020-05-14 21:49:16 +1000 |
|---|---|---|
| committer | Paul E. Murphy <murphyp@linux.vnet.ibm.com> | 2020-05-18 17:08:54 -0500 |
| commit | 765de945efc5d5602999b2999fe8abdf04881370 (patch) | |
| tree | 8c252731dcf3fc61ae700a5dba120c1eafc8f41f /sysdeps/powerpc/powerpc64/multiarch/rawmemchr-power9.S | |
| parent | 9e38f455a6c602be86b7b5a8d6523cbdcd7ec051 (diff) | |
| download | glibc-765de945efc5d5602999b2999fe8abdf04881370.tar.gz glibc-765de945efc5d5602999b2999fe8abdf04881370.tar.xz glibc-765de945efc5d5602999b2999fe8abdf04881370.zip | |
powerpc: Optimized rawmemchr for POWER9
This version uses vector instructions and is up to 60% faster on medium
matches and up to 90% faster on long matches, compared to the POWER7
version. A few examples:
__rawmemchr_power9 __rawmemchr_power7
Length 32, alignment 0: 2.27566 3.77765
Length 64, alignment 2: 2.46231 3.51064
Length 1024, alignment 0: 17.3059 32.6678
Diffstat (limited to 'sysdeps/powerpc/powerpc64/multiarch/rawmemchr-power9.S')
| -rw-r--r-- | sysdeps/powerpc/powerpc64/multiarch/rawmemchr-power9.S | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/sysdeps/powerpc/powerpc64/multiarch/rawmemchr-power9.S b/sysdeps/powerpc/powerpc64/multiarch/rawmemchr-power9.S new file mode 100644 index 0000000000..bac0a9090e --- /dev/null +++ b/sysdeps/powerpc/powerpc64/multiarch/rawmemchr-power9.S @@ -0,0 +1,21 @@ +/* Optimized rawmemchr implementation for PowerPC64/POWER9. + Copyright (C) 2020 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 + <https://www.gnu.org/licenses/>. */ + +#define RAWMEMCHR __rawmemchr_power9 + +#include <sysdeps/powerpc/powerpc64/le/power9/rawmemchr.S> |