25 May
2017
25 May
'17
12:05 a.m.
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- Log -----------------------------------------------------------------
http://cgit.osmocom.org/libosmocore/commit/?id=34e228a9bcf3ac37287bb5e684ac…
commit 34e228a9bcf3ac37287bb5e684ace46818740f3b
Author: Tom Tsou <tom.tsou(a)ettus.com>
Date: Sat Apr 29 00:16:43 2017 +0700
core/conv: add x86 SSE support for Viterbi decoder
Fast convolutional decoding is provided through x86 intrinsic based
SSE operations. SSE3, found on virtually all modern x86 processors,
is the minimal requirement. SSE4.1 and AVX2 are used if available.
Also, the original code was extended with runtime SIMD detection,
so only supported extensions will be used by target CPU. It makes
the library more partable, what is very important for binary
packages distribution. Runtime SIMD detection is currently
implemented through the __builtin_cpu_supports call.
Change-Id: I1da6d71ed0564f1d684f3a836e998d09de5f0351
-----------------------------------------------------------------------
Summary of changes:
src/Makefile.am | 6 +
src/viterbi.c | 121 ++++++++++-
src/viterbi_gen.c | 14 ++
src/viterbi_sse.c | 617 ++++++++++++++++++++++++++++++++++++++++++++++++++++++
4 files changed, 748 insertions(+), 10 deletions(-)
create mode 100644 src/viterbi_sse.c
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An utility library for Open Source Mobile Communications