[PATCH] Optimize insertqi when we copy all the lower 64 bits.

[Rafael Espíndola]

On 15 April 2014 14:04, Nadav Rotem <nrotem at apple.com> wrote:
> Hi Filipe,
>
> Why is this an IR-level transform? Could you implement this in SelectionDAG ?

What is the advantage of doing this at SelectionDAG? Since this is an
intrinsic, we know all that we need at the IR level already. IR also
has the advantage of opening the potential for further optimizations
an has much better testing than SelecetionDAG.

Cheers,
Rafael