[ACTIVITY] Nov 29 - Dec 2

[Ira Rosen]

- Continued looking into NEON special loads and stores.

- Benchmarks: concentrated on EEMBC Telecom:
   - autcor gets vectorized
   - viterbi, besides strided data accesses, needs to sink conditional
stores to allow if-conversion and make the main loop vectorizable.
Since the potential here is 4x, I think it's worthwhile to work on
this.
   - conven, fbital also have control-flow issue, but much more
complicated than viterbi
   - fft has a problem with loop count, I would like to investigate
this a bit more
   - diffmeasure doesn't seem to have vectorization potential

- Fixed GCC PR 46663 on trunk, testing the fix for 4.3, 4.4, 4.5.