#11608 HIGH Future : Include iwmmxt2-optimized pixman (was: Include optimized gfx libraries)

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#11608: Include iwmmxt2-optimized pixman
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           Reporter:  martin.langhoff  |       Owner:  jnettlet      
               Type:  task             |      Status:  new           
           Priority:  high             |   Milestone:  Future Release
          Component:  x window system  |     Version:  not specified 
         Resolution:                   |    Keywords:                
        Next_action:  review           |    Verified:  0             
Deployment_affected:                   |   Blockedby:                
           Blocking:                   |  
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Comment(by dsd):

 https://bugzilla.redhat.com/show_bug.cgi?id=837964 has the gcc upstream
 patch (scheduled for 4.8) backported to gcc-4.7.

 It seems unlikely that fedora will ship this patch in gcc-4.7. If that's
 the case, I'll be happy to maintain a forked pixman RPM until the new gcc
 enters Fedora - the important work of getting the support upstream is
 done.

 However, there are various reports of immxt instabilities around, such as
 http://lists.infradead.org/pipermail/linux-arm/2010-June/000211.html

 Before going further I would like to confirm that this doesn't affect us.
 However, compiling glibc (or pretty much anything, by the looks of things)
 with -march=iwmmxt2 causes a gcc crash. This is
 http://gcc.gnu.org/bugzilla/show_bug.cgi?id=40836

 Also, pixman fails to build on f18 due to a dependency error when iwmmxt2
 support is active. Might be a parallel make issue. Need to investigate and
 file a pixman bug.

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Ticket URL: <http://dev.laptop.org/ticket/11608#comment:5>
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