[Bug middle-end/94787] Failure to detect single bit popcount pattern

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=94787

--- Comment #8 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Created attachment 59026
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=59026&action=edit
The (pop cmp 1) |& (a cmp 0) testcase

This is the full one.

Note `a ? 1 : b` is also reduced down to `a | b` (etc.)

So I am still deciding on how to handle this in a reasonable fashion.