[Bug c/92222] ice in useless_type_conversion_p, at gimple-expr.c:86

[dcb314 at hotmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=92222

--- Comment #1 from David Binderman <dcb314 at hotmail dot com> ---
Reduced C code is

unsigned char *a;
b;
c() {
  char *d;
  int e;
  for (; b; b++) {
    e = 7;
    for (; e >= 0; e--)
      *d++ = a[b] & 1 << e ? '1' : '0';
  }
  f();
}