[Bug rtl-optimization/92342] [10 Regression] a small missed transformation into x?b:0

[segher at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=92342

--- Comment #12 from Segher Boessenkool <segher at gcc dot gnu.org> ---
Gimple can help writing silly expressions like this in a more canonical
form (whatever we decide to use for that) at least, yeah.  But you can
not do RTL's job in gimple ;-)