[Bug target/117137] [15 Regression] ICE: in extract_insn, at recog.cc:2882 unrecognizable insn: (compare:CCZ reg:V2DI reg:V2DI) with -O2 -msse4

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=117137

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
     Ever confirmed|0                           |1
             Status|UNCONFIRMED                 |NEW
   Last reconfirmed|                            |2024-10-14

--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Confirmed. Here is a testcase without `_Complex long`:
```
long x[2];

int
foo (int c)
{
  long x0 = x[0], x1 = x[1];
  int t = x0 != 0 | x1 != 0;
  c *= t;
  return c;
}
```

There seems like an interaction between the `vector!=0` comparison vs COND_EXPR
expansion.

```
  _2 = vect_x0_4.5_9 != { 0, 0 };
  c_8 = _2 ? c_7(D) : 0;
```