Expansion of narrowing math built-ins into power instructions

[Segher Boessenkool]

On Wed, Jul 31, 2019 at 12:23:18PM +0530, Tejas Joshi wrote:
> > In GCC (in rs6000.md) we have the "*add<mode>3_fpr" and similar insns,
> > which could be extended to allow DF inputs with an SF output; it doesn't
> > yet allow it.
> 
> Thanks for the inputs, I will try to address these points now. I have
> built GCC on gcc112 and will apply patch and test testcases there.

For the QP float (binary128, KFmode, take your pick) you need Power9 or
newer, so gcc135.


Segher