[Bug middle-end/19987] [meta-bug] fold missing optimizations in general

[pinskia at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=19987
Bug 19987 depends on bug 95923, which changed state.

Bug 95923 Summary: Failure to optimize bool checks into and
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=95923

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|ASSIGNED                    |RESOLVED
         Resolution|---                         |FIXED