On Thu, Aug 9, 2018 at 4:15 PM Luc Van Oostenryck
<luc.vanoostenryck@xxxxxxxxx> wrote:
>
> But since the current multi-instructions simplifications need anyway
> to be kept as they're also useful for non-bitfields, it would just add
> more work and more combinations and more code with very few in return
> (less instructions and pseudos at linearization time, faster
> simplification of bitfields).
Exactly. And you often have combinations of shifts _and_ the bitfield
insert/extract cases, so it really explodes.
So having insert/extract instructions might simplify the simple cases,
but it would make the complex cases even worse.
Linus
