diff options
| author | Eric <ewild@sysmocom.de> | 2020-07-23 02:16:46 +0200 |
|---|---|---|
| committer | laforge <laforge@osmocom.org> | 2020-08-06 16:47:40 +0000 |
| commit | 3afc1d1777e1c0dc0fe832db2c9746fb8a767fe3 (patch) | |
| tree | 96f104934eb857ba1d66516f4df7e8e6865c9790 /src/Makefile.am | |
| parent | 2c962f5de1eeea119cfac7d9d92db31c570353b9 (diff) | |
libomsocoding: NEON viterbi acceleration
configure flag required to enable this: --enable-neon
Although autodetection according to __ARM_NEON would work because this
is only defined if the fpu is neon neon-fp16 neon-vfpv3 neon-vfpv4
neon-fp-armv8 crypto-neon-fp-armv8 doing that would lead to a unknown
performance impact, so it needs to be enabled manually.
Speedup is about ~1.3-1.5 on a unspecified single core Cortex A9. This
requires handling a special case for RACH with len 14 which is far too
short for neon and would actually incur a performance penalty of 25%.
Related: OS#4585
Change-Id: I58ff2cb4ce3514f43390ff0a2121f81e6a4983b5
Diffstat (limited to 'src/Makefile.am')
| -rw-r--r-- | src/Makefile.am | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/src/Makefile.am b/src/Makefile.am index 16119d98..be097848 100644 --- a/src/Makefile.am +++ b/src/Makefile.am @@ -48,6 +48,11 @@ endif endif endif +if HAVE_NEON +libosmocore_la_SOURCES += conv_acc_neon.c +# conv_acc_neon.lo : AM_CFLAGS += -mfpu=neon no, could as well be vfp with neon +endif + BUILT_SOURCES = crc8gen.c crc16gen.c crc32gen.c crc64gen.c EXTRA_DIST = conv_acc_sse_impl.h crcXXgen.c.tpl |