[mythtv-commits] Ticket #5175: Fast CMOV test in configure is broken

[MythTV]

#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.

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Ticket URL: <http://svn.mythtv.org/trac/ticket/5175>
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