Tamar Christina writes:
> Hi All,
>
> This optimizes right shift rounding narrow instructions to
> rounding add narrow high where one vector is 0 when the shift amount is half
> that of the original input type.
>
> i.e.
>
> uint32x4_t foo (uint64x2_t a, uint64x2_t b)
> {
> return vrshrn_high_n_u
hes@gcc.gnu.org
> > Cc: Richard Earnshaw ; nd ;
> > Richard Sandiford ; Marcus Shawcroft
> >
> > Subject: [PATCH]AArch64 Optimize right shift rounding narrowing
> >
> > Hi All,
> >
> > This optimizes right shift rounding narrow instructions to
Hi All,
This optimizes right shift rounding narrow instructions to
rounding add narrow high where one vector is 0 when the shift amount is half
that of the original input type.
i.e.
uint32x4_t foo (uint64x2_t a, uint64x2_t b)
{
return vrshrn_high_n_u64 (vrshrn_n_u64 (a, 32), b, 32);
}
now gen
