On Tue, Oct 26, 2021 at 5:51 PM Hongyu Wang via Gcc-patches
wrote:
>
> Hi,
>
> For _Float16 type, add insn and expanders to optimize x / y to
> x * rcp (y), and x / sqrt (y) to x * rsqrt (y).
> As Half float only have minor precision difference between div and
> mul * rcp, there is no need for New
Hi,
For _Float16 type, add insn and expanders to optimize x / y to
x * rcp (y), and x / sqrt (y) to x * rsqrt (y).
As Half float only have minor precision difference between div and
mul * rcp, there is no need for Newton-Rhapson approximation.
Bootstrapped/regtested on x86_64-pc-linux-gnu{-m32,}
