[Bug middle-end/59521] __builtin_expect not effective in switch

[tetra2005 at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=59521

Yuri Gribov <tetra2005 at gmail dot com> changed:

           What    |Removed                     |Added
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                 CC|                            |tetra2005 at gmail dot com

--- Comment #2 from Yuri Gribov <tetra2005 at gmail dot com> ---
Created attachment 41698
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=41698&action=edit
Draft patch (not working)

This can be added easily but I ran into a block in combine_predictions_for_bb
which resets predictions whenever block has more than one outgoing edge and
predictor is not strong enough (like e.g. noreturn predictor).