add some more instructions

Keeping all the values i32/I32 for now.
Maybe something more complex later?

Change-Id: Iaf804fa51e51d378ea7857b8c5aa2f20c3403e2c
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/273863
Auto-Submit: Mike Klein <mtklein@google.com>
Reviewed-by: Herb Derby <herb@google.com>
Commit-Queue: Mike Klein <mtklein@google.com>
1 file changed