On 8/8/2021 4:48 AM, Roger Sayle wrote:
This middle-end patch teaches RTL expansion to recognize widening
multiplications followed by right shifts as highpart multiplications,
and attempt to emit them using the backends [su]mul_highpart optab
if possible.
My first attempt at supporting this,
On Sun, Aug 8, 2021 at 1:40 PM Roger Sayle wrote:
>
>
> Doh! ENOPATCH. This time with attachments...
> https://gcc.gnu.org/pipermail/gcc-patches/2021-August/576922.html
Note I was originally suggesting to perform
the matching on GIMPLE but only in one of the "instruction selection passes".
There
