[Bug tree-optimization/117093] Missing detection of REV64 vector permute

[pinskia at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=117093

--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---

  t_4 = BIT_FIELD_REF <r_3(D), 32, 0>;
  a_5 = VEC_PERM_EXPR <_1, _1, { 1, 1, 2, 3 }>;
  a_6 = BIT_INSERT_EXPR <a_5, t_4, 32 (32 bits)>;
  t_7 = BIT_FIELD_REF <r_3(D), 32, 64>;
  _2 = BIT_FIELD_REF <r_3(D), 32, 96>;
  a_8 = BIT_INSERT_EXPR <a_6, _2, 64 (32 bits)>;
  a_9 = BIT_INSERT_EXPR <a_8, t_7, 96 (32 bits)>;


IIRC there are others like this.