Comparison of GCC-4.9 and LLVM-3.4 performance on SPECInt2000 for x86-64 and ARM

[Vladimir Makarov]

On 2014-06-25, 10:01 AM, Vladimir Makarov wrote:
> On 2014-06-24, 10:57 AM, Ramana Radhakrishnan wrote:
>>
>
> I've tried this options too.  As I guessed it resulted in GCC
> improvement of eon only by 6% which improved overall score by less 0.5%.
>   No change for LLVM though.  Eon is more fp benchmark with my point of
> view and it should be in SPECFP but it is a different story.
>
> I've tried GCC SPECFP2000 also with and without this options and it gave
> about 12% improvement (1006 vs 988).  That is a *huge* improvement.  I
> guess using NEON for ARM is really important for fp benchmarks.
>

Sorry, I miscalculated last improvement in m head.  It should be 1.8% 
not 12%.