[PATCH] [Reassociate] Add initial support for vector instructions.

[Chad Rosier]

Thanks for taking this on, Rob.  I agree that this should be committed in incremental patches.

What kind of correctness/performance testing have you done?

IIRC, I didn't see a lot of change in SPEC2000/SPEC2006 with my original patch.


http://reviews.llvm.org/D7566

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