[Bug tree-optimization/122724] New: [13 Regression] ICE due to incorrect COND_NEG with VCE folding

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=122724

            Bug ID: 122724
           Summary: [13 Regression] ICE due to incorrect COND_NEG with VCE
                    folding
           Product: gcc
           Version: 16.0
            Status: UNCONFIRMED
          Keywords: ice-on-valid-code
          Severity: normal
          Priority: P3
         Component: tree-optimization
          Assignee: unassigned at gcc dot gnu.org
          Reporter: pinskia at gcc dot gnu.org
  Target Milestone: ---
            Target: aarch64

```
_Float16 in[128];
short out[128];
void foo(void) {
  for (int i = 0; i < 128; i++) {
    _Float16 x = in[i];
    _Float16 y = x ? -x : 0.0;
    short dst;
    __builtin_memcpy (&dst, &y, sizeof(dst));
    out[i] = dst;
  }
}
```

Forwarded from PR 112469.

`-O2 -march=armv8.2-a+sve`