[mythtv-commits] Re: Ticket #529: quickdnr filter causes "illegal
instruction" with pentium 3
MythTV
mythtv at cvs.mythtv.org
Mon Oct 31 12:22:52 EST 2005
#529: quickdnr filter causes "illegal instruction" with pentium 3
------------------------------------+---------------------------------------
Reporter: hansi.urpils at gmail.com | Owner: ijr
Type: defect | Status: closed
Priority: minor | Milestone: 0.19
Component: mythtv | Version: head
Severity: medium | Resolution: fixed
------------------------------------+---------------------------------------
Changes (by danielk):
* resolution: => fixed
* status: reopened => closed
Comment:
(In [7657]) Fixes #529.
The quickdnr function was using prefetch which is only available
some a subset of MMX capable processors and this was being used
based on a simple MMX available test.
Also these prefetches are pointless and may even slow down the
code because sequental array accesses are already prefetched at
the T0 level by the processors that support prefetch; the
extra instructions just give the instruction decoder more to
do without any benefit.
I commented them out rather than removing them entirely because
this code might be resynced to from outside MythTV.
--
Ticket URL: <http://cvs.mythtv.org/trac/ticket/529>
MythTV <http://www.mythtv.org/>
MythTV
More information about the mythtv-commits
mailing list