libosmocore[master]: core/conv: add x86 SSE support for Viterbi decoder

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Vadim Yanitskiy gerrit-no-reply at lists.osmocom.org
Mon May 1 08:51:37 UTC 2017


Patch Set 2:

Quick update: I just tested runtime SIMD detection using QEMU.
First step was to compile libosmocore with AVX2 / SSE3 / SSE4.1.
Then I did 'make check' with the following CPU configurations:

 -cpu host (all host SIMD extensions)
 -cpu host,-avx2 (AVX2 disabled)
 -cpu host,-sse4.1 (SSE4.1 disabled)
 -cpu host,-avx2,-sse4.1 (both disabled)
 -cpu host,-ssse3 (SSE3 disabled)

Everything worked as expected, i.e. the code is able to detect
extensions, supported by CPU, and to choose applicable functions
depending on that.

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Gerrit-MessageType: comment
Gerrit-Change-Id: I1da6d71ed0564f1d684f3a836e998d09de5f0351
Gerrit-PatchSet: 2
Gerrit-Project: libosmocore
Gerrit-Branch: master
Gerrit-Owner: Vadim Yanitskiy <axilirator at gmail.com>
Gerrit-Reviewer: Alexander Chemeris <Alexander.Chemeris at gmail.com>
Gerrit-Reviewer: Harald Welte <laforge at gnumonks.org>
Gerrit-Reviewer: Jenkins Builder
Gerrit-Reviewer: Max <msuraev at sysmocom.de>
Gerrit-Reviewer: Tom Tsou <tom at tsou.cc>
Gerrit-Reviewer: Vadim Yanitskiy <axilirator at gmail.com>
Gerrit-Reviewer: dexter <pmaier at sysmocom.de>
Gerrit-HasComments: No



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