[Bug tree-optimization/83353] Missed optimization in math expression: sin(asin(a)) == a

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83353

--- Comment #4 from Richard Biener <rguenth at gcc dot gnu.org> ---
So asin(sin(a)) would be a no-brainer but sin(asin(a)) needs to handle a being
outside of [-1,1].