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From: "burnus at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug middle-end/106449] ICE in #pragma omp parallel for simd since
 r6-4544-ge01d41e553aae245
Date: Wed, 27 Jul 2022 14:35:29 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D106449

--- Comment #6 from Tobias Burnus <burnus at gcc dot gnu.org> ---
Comment on attachment 53362
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=3D53362
gcc13-pr106449.patch

> +		  t =3D fold_convert (sizetype, fd->loops[i + 1].n1);
> +		  t =3D fold_build_pointer_plus (t2, t);

I think the first line is not needed, given that fold_build_pointer_plus_loc
has:

  return fold_build2_loc (loc, POINTER_PLUS_EXPR, TREE_TYPE (ptr),
                          ptr, convert_to_ptrofftype_loc (loc, off));

and the convert_to_ptrofftype_loc does:

  if (ptrofftype_p (TREE_TYPE (off)))
    return off;
  return fold_convert_loc (loc, sizetype, off);

where the last line matches your first line. Hence, just calling

                  t =3D fold_build_pointer_plus (t2, fd->loops[i + 1].n1);

should gives the same result and is more compact (avoids a line and a
2-character indent).=