re PR debug/41558 (gfortran -O code excessive DW_OP_deref's)
PR debug/41558
* dwarf2out.c (loc_by_reference): Removed.
(dw_loc_list_1): New function.
(dw_loc_list): Remove toplev argument, add want_address argument.
Don't look at decl_by_reference_p at all. Use dw_loc_list_1.
(loc_list_from_tree) <case VAR_DECL>: Pass want_address rather than
want_address == 2 to dw_loc_list. For successful dw_loc_list
set have_address to 1 only if want_address is not 0.
* gcc.dg/guality/guality.exp: Move gdb-test proc into...
* lib/gcc-gdb-test.exp: ... here. New file.
* gfortran.dg/guality/guality.exp: New file.
* gfortran.dg/guality/pr41558.f90: New test.
* gfortran.dg/guality/arg1.f90: New test.