add add/sub/min/max w/ constant ops
I'm seeing these come up a lot in skvm image shaders.
It's worth noting that everything is symmetric but sub().
min() and max() are a _little_ subtle because ultimately the
instructions they imply are not entirely symmetric when NaN
is involved, but I think we can probably get away with it.
Change-Id: I7275ebad61845e720cd26cba28db5b8210951e20
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/263099
Reviewed-by: Herb Derby <herb@google.com>
Commit-Queue: Mike Klein <mtklein@google.com>
2 files changed