add vmovdqa(ymm,ymm)

Fills in a little TODO.
Also add assembler unit tests for similar float->int and int->float.

Tested by SkVM_mad, SkVM_madder.

Change-Id: I5334029927fdecb0ff7f5a3b081cf2ce7b23995c
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/230838
Reviewed-by: Mike Klein <mtklein@google.com>
Commit-Queue: Mike Klein <mtklein@google.com>
3 files changed