[Patch] Inline optimization for tanh(x)/sinh(x) -> 1.0/cosh(x)

[Jeff Law]

On Fri, 2020-01-31 at 15:50 -0300, Vitor Guidi wrote:
> I took the required steps. The patch is attached to this email, I hope
> I got it right this time. I did not forward the patch to gcc-patches
> the first time, sorry for the inconvenience.
> 
> Thank you for your attention,
> 
> Vitor.
> 
> in gcc/ChangeLog:
> 2020-01-28 Vitor Guidi <vitor.guidi@usp.br>
>             * match.pd: New substitution rule for tanh(x)/sinh(x) ->
> 1.0/cosh(x).
> 
> in gcc/testsuite/ChangeLog:
> 2020-01-28 Vitor Guidi <vitor.guidi@usp.br>
>             *gcc.dg/tanhbysinh.c (new): New testcase.
Thanks.  I've installed this on the trunk.  Sorry for the delays.

jeff
>