https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110540
--- Comment #2 from Andrew Pinski <pinskia at gcc dot gnu.org> --- So what is happening is EVRP is able to figure out _35 in the below: # RANGE [irange] int [-8, 0] _12 = (intD.6) j_16; # RANGE [irange] unsigned char [0, 0][248, +INF] b.7_32 = (unsigned char) j_16; # RANGE [irange] unsigned char [239, 247] _34 = b.7_32 + 247; # RANGE [irange] char [-17, -9] _35 = (charD.7) _34; Is -9 rather than a range. And then everything goes down here from there. Including loop detection ...