[Bug tree-optimization/119534] [12/13/14/15 regression] ICE when building libaom-3.10.0 since r12-5392

[jakub at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=119534

--- Comment #8 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
  vector(8) <signed-boolean:1> mask__2.12;
  <signed-boolean:1> _72;
  <signed-boolean:1> _78;

_72 = BIT_FIELD_REF <mask__2.12_63, 8, 0>;
pr119534.c:1:6: error: integral result type precision does not match field size
of ‘bit_field_ref’
_78 = BIT_FIELD_REF <mask__2.12_63, 8, 8>;