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GCC 4.8.0 vs. LLVM Clang 3.3 Compiler Performance

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  • #16
    Originally posted by ArneBab View Post
    Except that it only was faster in two tests (in one of them only on one single CPU out of 3) and slower in everything else… (I don’t count compile times as tests).

    But you summarized nicely how misleading the text of this article is - again
    Under "next release" i mean Clang 3.4 or later... Sorry for my bad English.

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    • #17
      Originally posted by curaga
      That is another possible conclusion, yes.
      Or this:

      Originally posted by ArneBab View Post
      weakly parallelizable algorithm
      Thanks.

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      • #18
        compiler optimization

        (Sorry I didn't read too closely if it already does this, and didn't look in the source to check). Anyway one thought is "is this using gcc -march=native"? and another might be to use gcc's profile guided optimization for it. And/or clang's equivalent if it exists.
        Cheers.
        -roger-

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