On Tue, Jun 9, 2015 at 3:39 PM, Jakub Jelinek <ja...@redhat.com> wrote: > On Tue, Jun 09, 2015 at 03:21:55PM +0200, Uros Bizjak wrote: >> I'm afraid that simple scan loop won't work correctly on x32. There >> are some issues with UNSPEC_TP for this target, so we have to generate >> zero_extend of SImode UNSPEC, e.g.: >> >> (plus:DI (zero_extend:DI (unspec:SI [...] UNSPEC_TP) (reg:DI ...)) >> >> as can be seen in get_thread_pointer to construct the address. It >> looks that your loop won't find the UNSPEC_TP tag in the above case. > > You're right, for -m32 it would need to start with > rtx *x = &addr; > + while (GET_CODE (*x) == ZERO_EXTEND > + || GET_CODE (*x) == AND > + || GET_CODE (*x) == SUBREG) > + x = &XEXP (*x, 0);
Oh, you can use SImode_address_operand predicate here. Uros.
