Hi,

* vectorizer cost model - implemented builtin_vectorization_cost for NEON - added register spilling considerations to the cost model - started testing/tuning on EEMBC Telecom and DenBench (for now I have only two examples for spilling: fdct_int32 mp4encode that shouldn't get vectorized and viterbi that should)

* measured vectorization impact on Telecom autcor - it's about 5x (initially I got run time segfault, but the bug is already fixed on GCC trunk, I'll have to check gcc-linaro-4.5 as well)

* NEON-vs.non-NEON degradation - started to look at aes. There are 6 loops that get vectorized with 4.6 (due to this patch http://gcc.gnu.org/ml/gcc-patches/2010-05/msg01927.html that allows cond_expr in number of loop iterations expressions) and vzip/vuzp patch, but not with gcc-linaro-4.5. But it doesn't explain the degradation of course. - I don't understand mp4decodepsnr improvement, since I don't see any loops or basic blocks vectorized.

Ira