[mythtv-commits] Ticket #5175: Fast CMOV test in configure is broken
MythTV
mythtv at cvs.mythtv.org
Mon Apr 7 13:14:27 UTC 2008
#5175: Fast CMOV test in configure is broken
------------------------------+---------------------------------------------
Reporter: Dagmar d'Surreal | Owner: ijr
Type: defect | Status: new
Priority: trivial | Milestone: 0.21.1
Component: mythtv | Version: 0.21-fixes
Severity: low | Mlocked: 0
------------------------------+---------------------------------------------
Currently the logic for selecting for fast CMOV or slower CMOV (Netburst-
based CPUs) is broken and appears to be assuming a slower CMOV and only
enables fast_cmov when a CPU detection override is called for.
This could result in AVC CABAC decoding going slower than it should (from
what I gather by reading piles of discussions from the ffmpeg mailing
list).
Note this has nothing to do with those cheapie CPUs (*kof*C3*kof*) that
don't support CMOV at all--that is being checked for elsewhere and looks
correct enough.
--
Ticket URL: <http://svn.mythtv.org/trac/ticket/5175>
MythTV <http://www.mythtv.org/>
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