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


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%.


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