[Bug rtl-optimization/122919] Unnecessary duplication of shifts with computed goto

[pinskia at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=122919

--- Comment #3 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
So there are heurstics to reduce compile time with many bb going out of one bb
and this might trigger one of these.  This is why the number of labels for the
computed gotos is so many in the first place to hit the limit.