https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110461
--- Comment #5 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Here is a better testcase which fails even at -O1 and does not depend on the
vectorizer:
```
typedef int v4si __attribute__ ((vector_size (4*sizeof(int))));
typedef short v4hi __attribute__ ((vector_size (4*sizeof(short))));
v4hi f(v4hi a, v4hi b)
{
auto t = __builtin_convertvector (a, v4si);
auto t1 = __builtin_convertvector (b, v4si);
t ^= t1;
return __builtin_convertvector (t, v4hi);
}
```
