more JIT refactoring
This re-enables AVX2 JIT with simultaneous register assignment and
instruction selection. You can see it working in a very basic way in
how we choose instructions and registers for Op::mad_f32.
Constants are still broadcast, here inside the loop instead of hoisted.
I think it'll probably end up best to use constants directly from memory
(as in vpshufb's masks), falling back to these in-loop broadcasts when
that can't work.
Change-Id: If17d51b9960f08da3612e51ac04424e996bf83d4
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/228366
Commit-Queue: Mike Klein <mtklein@google.com>
Reviewed-by: Mike Klein <mtklein@google.com>
3 files changed