This does not give us 100% coverage of intrinsics yet, but it is a
pretty good start.
Change-Id: I97d49324db1afd9f2975c2eeafbacdead710d4aa
Bug: skia:11054
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/341977
Commit-Queue: John Stiles <johnstiles@google.com>
Auto-Submit: John Stiles <johnstiles@google.com>
Reviewed-by: Ethan Nicholas <ethannicholas@google.com>
