message: Implement intrinsic "exact_div"
diff: @@ -194,9 +194,9 @@ pub fn codegen_intrinsic_call<'a, 'tcx: 'a>(
  let type_id = CValue::const_val(fx, u64_layout.ty, type_id as i64);
  ret.write_cvalue(fx, type_id);
  };
  - _ if intrinsic.starts_with("unchecked_"), (c x, c y) {
  + _ if intrinsic.starts_with("unchecked_") || intrinsic == "exact_div", (c x, c y) {
  let bin_op = match intrinsic {
  - "unchecked_div" => BinOp::Div,
  + "unchecked_div" | "exact_div" => BinOp::Div,
  "unchecked_rem" => BinOp::Rem,
  "unchecked_shl" => BinOp::Shl,
  "unchecked_shr" => BinOp::Shr,
  