message: (try to) fix cranelift
diff: use rustc_span::DUMMY_SP;
  +use rustc_ast::Mutability;
  use rustc_data_structures::fx::{FxHashMap, FxHashSet};
  use rustc_errors::ErrorReported;
  use rustc_middle::middle::codegen_fn_attrs::CodegenFnAttrFlags;
  @@ -175,6 +176,7 @@ pub(crate) fn codegen_const_value<'tcx>(
  let mut alloc = Allocation::from_bytes(
  std::iter::repeat(0).take(size.bytes_usize()).collect::<Vec<u8>>(),
  align,
  + Mutability::Not,
  );
  alloc.write_scalar(fx, alloc_range(Size::ZERO, size), x.into()).unwrap();
  let alloc = fx.tcx.intern_const_alloc(alloc);
  