[Bug target/128437] [14/15/16/17 Regression] ICE: output_operand: '%&' used without any local dynamic TLS references on x86_64 with -O2 -fPIC -fvisibility=hidden

[ubizjak at gmail dot com via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=128437

--- Comment #10 from Uroš Bizjak <ubizjak at gmail dot com> ---
(In reply to Drea Pinski from comment #9)
> (In reply to Uroš Bizjak from comment #8)
> > (In reply to Drea Pinski from comment #7)
> > > is not being deleting.  I think this is due to this being a call_insn.  No
> > > other target uses call here .... So back to a target specific issue.
> > 
> > Please see bug 110606 comment 7. PPC defines it in the same way.
> 
> I wonder if we mark the call as being pure/const things will just work.
It already is marked as const:

              start_sequence ();
              rtx_insn *call_insn = emit_call_insn
                (gen_tls_local_dynamic_base_64 (Pmode, rax, caddr, rdi));
              CALL_INSN_ABI_ID (call_insn)
                = ix86_tls_get_addr_abi ().id ();
              insns = end_sequence ();

              /* Attach a unique REG_EQUAL, to allow the RTL optimizers to
                 share the LD_BASE result with other LD model accesses.  */
              eqv = gen_rtx_UNSPEC (Pmode, gen_rtvec (1, const0_rtx),
                                    UNSPEC_TLS_LD_BASE);

              RTL_CONST_CALL_P (insns) = 1;
              emit_libcall_block (insns, base, rax, eqv);