[Bug tree-optimization/115694] [13/14/15 regression] ICE in forwprop (useless_type_conversion_p) when building scipy with LTO

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=115694

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
     Ever confirmed|0                           |1
             Status|UNCONFIRMED                 |NEW
   Last reconfirmed|                            |2024-06-28

--- Comment #8 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Before forwprop3:
  a.0_1 = COMPLEX_EXPR <_3, _7>;
  f = VIEW_CONVERT_EXPR<struct b>(a.0_1);

Afterwards:
  struct b f;
  REALPART_EXPR <f> = _3;
  IMAGPART_EXPR <f> = _7;
  e (f);

Let me try to come up with a better testcase.