[Bug tree-optimization/114799] [14 Regression] ICE: tree check: expected class 'type', have 'exceptional' (error_mark) in useless_type_conversion_p, at gimple-expr.cc:85 with -O2 -fno-vect-cost-model

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=114799

Andrew Pinski <pinskia at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
            Summary|[14 Regression] ICE: tree   |[14 Regression] ICE: tree
                   |check: expected class       |check: expected class
                   |'type', have 'exceptional'  |'type', have 'exceptional'
                   |(error_mark) in             |(error_mark) in
                   |useless_type_conversion_p,  |useless_type_conversion_p,
                   |at gimple-expr.cc:85 with   |at gimple-expr.cc:85 with
                   |-O2 -fno-tree-forwprop      |-O2  -fno-vect-cost-model
                   |-fvect-cost-model=unlimited |

--- Comment #3 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
  _20 = {t1_6, _10};
  vect_patt_12.5_22 = { 254, 255 } + _20;
  vect_t1_7.4_21 = { 254, 255 } - _20;


_10 is not defined anywhere.