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GCC x86 Receives New Intel CPU Tuning Target

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  • GCC x86 Receives New Intel CPU Tuning Target

    Phoronix: GCC x86 Receives New Intel CPU Tuning Target

    With future versions of GCC there is now a "-mtune=ia" target for the GNU Compiler Collection's x86 back-end to always optimize the compiled program for the very latest Intel processors...

    http://www.phoronix.com/vr.php?view=MTUzNzE

  • #2
    It got changed to mtune=intel
    See http://gcc.gnu.org/gcc-4.9/changes.html

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    • #3
      Suppose I add the -mtune=ia option by default to my {C,CXX}FLAGS when compiling using GCC because I have the latest Intel CPU. A new Intel CPU architecture comes out, after which I upgrade GCC. Does this mean that the binaries I now produce won't work on my hardware?

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      • #4
        Check the gcc manual - mtune doesn't affect the "will it run on foo", march does.

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        • #5
          Originally posted by curaga View Post
          Check the gcc manual - mtune doesn't affect the "will it run on foo", march does.
          Sweet, thanks! Here's a good SO post that explains the difference: http://stackoverflow.com/questions/1...ent-from-mtune

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