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From: "marxin at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug lto/105012] [12 Regression] wrf from SPECCPU2017 ICEs during
 LTO linking since r12-7692-g8db155ddf8cec9
Date: Tue, 22 Mar 2022 10:58:36 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D105012

--- Comment #6 from Martin Li=C5=A1ka <marxin at gcc dot gnu.org> ---
(In reply to Richard Biener from comment #4)
> OK, so we have
>=20
> (gdb) p debug_gimple_stmt (stmt)
> derf(address-taken) =3D{v} {CLOBBER};
>=20
> lacking virtual operands and the LHS is
>=20
>  <function_decl 0x7ffff6346700 derf
>     type <function_type 0x7ffff634a348
>         type <real_type 0x7ffff6537348 double DF
> ...
>=20
> that stmt is input this way from LTO bytecode.  The following should catch
> who's building this.
>=20
> diff --git a/gcc/tree-cfg.cc b/gcc/tree-cfg.cc
> index e321d929fd0..fa92a505771 100644
> --- a/gcc/tree-cfg.cc
> +++ b/gcc/tree-cfg.cc
> @@ -4512,7 +4512,8 @@ verify_gimple_assign_single (gassign *stmt)
>      }
>=20=20
>    if (gimple_clobber_p (stmt)
> -      && !(DECL_P (lhs) || TREE_CODE (lhs) =3D=3D MEM_REF))
> +      && !((DECL_P (lhs) && TREE_CODE (lhs) !=3D FUNCTION_DECL)
> +          || TREE_CODE (lhs) =3D=3D MEM_REF))
>      {
>        error ("%qs LHS in clobber statement",
>              get_tree_code_name (TREE_CODE (lhs)));

Let me find the builder of this.=