message: Avoid call to pointer_ty
diff: @@ -1122,6 +1122,7 @@ fn type_by_size(size: Size) -> Option<Type> {
  }
  let size = fx.layout_of(T).layout.size;
  + // FIXME add and use emit_small_memcmp
  let is_eq_value =
  if size == Size::ZERO {
  // No bytes means they're trivially equal
  @@ -1137,10 +1138,9 @@ fn type_by_size(size: Size) -> Option<Type> {
  } else {
  // Just call `memcmp` (like slices do in core) when the
  // size is too large or it's not a power-of-two.
  - let ptr_ty = pointer_ty(fx.tcx);
  let signed_bytes = i64::try_from(size.bytes()).unwrap();
  - let bytes_val = fx.bcx.ins().iconst(ptr_ty, signed_bytes);
  - let params = vec![AbiParam::new(ptr_ty); 3];
  + let bytes_val = fx.bcx.ins().iconst(fx.pointer_type, signed_bytes);
  + let params = vec![AbiParam::new(fx.pointer_type); 3];
  let returns = vec![AbiParam::new(types::I32)];
  let args = &[lhs_ref, rhs_ref, bytes_val];
  let cmp = fx.lib_call("memcmp", params, returns, args)[0];
  