Changes between Initial Version and Version 1 of Ticket #13914


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Timestamp:
Jan 14, 2008, 5:11:07 AM (16 years ago)
Author:
jmpp@…
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  • Ticket #13914

    • Property Milestone changed from to Port Enhancements

  • Ticket #13914 – Description

    initial v1  
    11G5 based computers see a significant performance boost in x264 if the compiler is told to build specifically for it. I've created a simple variant for the G5.
    22
     3{{{
    34variant G5 {
    45        configure.cflags-append "-mcpu=970 -mtune=970 -mpowerpc64 -mpowerpc-gpopt -fast -mabi=altivec -maltivec"
    56}
     7}}}
    68
    79Most of the improvements come from the first four parameters. You could argue that -fast isn't really a G5 specific tag, so it shouldn't be here, but since this is trying to tune as tightly for performance, I think it is worth having. I can make a patch file if it is needed.