PowerPC 440GP-specific optimization with gcc

Roland Dreier roland at digitalvampire.org
Sun Feb 23 06:17:44 EST 2003


    Mark> I am not a tools expert by any means.. but from my
    Mark> understanding there is work to support the 440 specific
    Mark> items.

    Mark> However, I believe the work is focused on enhancing binutils
    Mark> (the assembler) and not the compiler.  So any 440 specific
    Mark> optimizations you would like would need to be written in
    Mark> assembly.  (My multi-month old memory is that the 440's new
    Mark> userspace instructions arn't terribly "generic" to
    Mark> facilitate use in gcc..)

I am not talking about using new 440/Book E instructions.  I am just
referring to generic optimizations such as scheduling instructions to
fit the 440's pipelines as well an possible.  Clearly this would
involve work on gcc, and I am just wondering if anyone has done this.

Thanks,
  Roland

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