[Bug target/69421] [6 Regression] ICE in maybe_legitimize_operand, at optabs.c:6888 with -O3

[jakub at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=69421

--- Comment #7 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Reduced testcase (in C now):
struct A { double a; };
double a;

void
foo (_Bool *x)
{
  long i;
  for (i = 0; i < 64; i++)
    {
      struct A c;
      x[i] = c.a || a;
    }
}