[Bug tree-optimization/125307] Gswitch cases should take an edge or a bb instead of a label once in cfg mode

[rguenth at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=125307

--- Comment #5 from Richard Biener <rguenth at gcc dot gnu.org> ---
(In reply to Drea Pinski from comment #3)
[...]
> Right now the following are the timings on the lookups:

That's after start_recording_case_labels ()

> Label->bb : O(1)
> bb->cases : O(numofcases)
> case->edge: O(numberofedges) (basically label->bb then bb->edge)