[Bug tree-optimization/99919] [10/11/12/13 Regression] bogus -Wmaybe-uninitialized with a _Bool bit-field

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=99919

--- Comment #7 from Richard Biener <rguenth at gcc dot gnu.org> ---
Created attachment 54047
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=54047&action=edit
patch

I also have a patch - this disables optimize_bit_field_compare for
bitfield vs. constant compares which is the source of most premature
obfuscation and avoids missing the optimization of multiple bitfield
extracts as if more aggressively removing this code.