* dwarf2cfi.c: Include diagnostic-core.h.
        (maybe_record_trace_start): Don't ICE, just warn, for a row mismatch.
Downgrade TLS general dynamic implementation:

        * config/arc/arc.c (tls_get_addr_libfunc): Add back.
        (get_tls_get_addr, arc_emit_call_tls_get_addr): Likewise.
        (arc_legitimize_tls_address): Use obsolete general-dynamic
        implementation.