[Bug target/86952] Avoid jump table for switch statement with -mindirect-branch=thunk

[marxin at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86952

--- Comment #2 from Martin Liška <marxin at gcc dot gnu.org> ---
H.J. I can write a patch for it. Do you expect more expensive costs when
retpolines are enabled?