[Bug c/69504] XMM register variable ICE with vector extensions

[mpolacek at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=69504

--- Comment #5 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
Better testcase:

typedef int U __attribute__ ((vector_size (16)));

int
foo (int i)
{
  register U u asm ("xmm0");
  return u[i];
}