[Bug tree-optimization/80974] [8 Regression] wrong code (generated code hangs) at -O2 on x86_64-linux-gnu

[glisse at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=80974

--- Comment #3 from Marc Glisse <glisse at gcc dot gnu.org> ---
According to the previous dump (crited1):
  # RANGE [1, 9] NONZERO 15
  h_11 = h_43 + 1;
but when we call get_nonzero_bits on h_11 in PRE, we get 7 ???