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Re: GCC-4.5.0 comparison with previous releases and LLVM-2.7 on SPEC2000 for x86/x86_64
I found an error in my size experiment set up -- (libstdc++ shared vs
non shared) -- please discard the size numbers -- will remeasure.
Thanks,
David
On Thu, Nov 18, 2010 at 4:02 AM, Jan Hubicka <hubicka@ucw.cz> wrote:
> Hi,
> and for size, could you please also do -Os comparsions? ?I am aware that -O2
> inliner is tuned somewhat up at C++. ?This is given by fact that we do have C++
> benchmark suite we use to monitor inlining.
> http://gcc.opensuse.org/c++bench-frescobaldi/
>
> Programs there are a lot more aggressive on abstraction than whatever SPEC2k
> and SPEC2k6 does. ?I know I can tune the inliner down for SPEC but get
> regression there... But given we can get 10% difference on normal C++ program
> it might be interesting to consider some compromise, at least for -O2.
>
> Honza
>