[Bug rtl-optimization/86882] [9 Regression] ICE in reg_overlap_mentioned_p, at rtlanal.c:1873

[segher at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86882

--- Comment #5 from Segher Boessenkool <segher at gcc dot gnu.org> ---
So what is wrong about that?  CONST_INTs are sign-extended always, so
0xffffffffffffff00 is just fine?