[PATCH] x86-64: Optimize e_expf with FMA [BZ #21912]

[Arjan van de Ven]

On 8/16/2017 7:56 AM, Szabolcs Nagy wrote:
> based on my benchmarks portable c code can
> easily beat the hand written sse asm

the hand written sse asm is not great on skylake or similar new cpus.
(few serious glass jaws)

the avx one is a lot better... but I'll welcome the challenge.

if you have a version in C, can you give an URL or something to it;
I'll just hook it into my local testbench and compare