[Bug target/28126] gcc moves an expensive (tls) instruction outside of a conditional

[pinskia at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=28126

--- Comment #13 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
> For now it is always emulated by kernel

Not on MIPS64r3/MIPS32r3 and above cores.  Octeon2/3 implements this register. 
There might be other cores which implement this register too.