https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89290

--- Comment #4 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
(In reply to UroŇ° Bizjak from comment #3)
> This address should be valid:
> 
> (const:DI (plus:DI (unspec:DI [
>                 (symbol_ref:DI ("s") [flags 0x2a] <var_decl 0x7f1b48c08b40
> s>)
>             ] UNSPEC_NTPOFF)
>         (const_int 8 [0x8])))
> 
> and there is code that allows this form in ix86_legitimate_address_p:
> 
>             /* foo@dtpoff(%rX) is ok.  */
>             if (GET_CODE (disp) != CONST
>                 || GET_CODE (XEXP (disp, 0)) != PLUS
>                 || GET_CODE (XEXP (XEXP (disp, 0), 0)) != UNSPEC
>                 || !CONST_INT_P (XEXP (XEXP (disp, 0), 1))
>                 || (XINT (XEXP (XEXP (disp, 0), 0), 1) != UNSPEC_DTPOFF
>                     && XINT (XEXP (XEXP (disp, 0), 0), 1) != UNSPEC_NTPOFF))
>               /* Non-constant pic memory reference.  */
>               return false;
> 
> Jakub, can you maybe look into this issue?

I will, probably by looking at why it works fine without -mcmodel=large,
because in that case it generates those CONSTs with PLUS, UNSPEC_NTPOFF and
CONST_INT offset.

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