[LLVMdev] FYI: Phoronix GCC vs. LLVM-GCC benchmarks

Olivier Meurant
2009-09-16T14:32:36Z

On Wed, Sep 16, 2009 at 3:46 PM, Stefano Delli Ponti <
stefano.delliponti at gmail.com> wrote:

> I don't know what you think about this, but shouldn't it be more
> meaningful to make these tests with -O3? I mean, we ought to make the
> comparisons with the highest level of optimization available for both of
> the compilers. It is difficult to compare an intermediate level.
>


A quick test confirms that the 40% difference stays even with an -O3 switch
on both compilers.
I just "choose" -O2 as it's the default of the original makefile.

Olivier.
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