* common.opt (gdwarf-): Accept a version number.
* doc/invoke.texi (gdwarf-): Update docs.
* opth-gen.awk: Special case -gdwarf+ to OPT_gdwarfplus.
* opts.c (common_handle_option) [OPT_gdwarf_]: Verify dwarf
version level, and record it.
* dwarf2.h (DW_CIE_VERSION): Remove.
* dwarf2out.c (DWARF_VERSION): Remove.
(add_fde_cfi): Skip DW_CFA_set_loc addition for dwarf3.
(output_call_frame_info): Use CIE version 3 for dwarf3,
or if the return register column is out of range for version 1.
(dwarf_stack_op_name): Add all dwarf3 values.
(DEBUG_PUBTYPES_SECTION): New.
(size_of_die) [dw_val_class_die_ref]: Handle DW_FORM_ref_addr
encoding change for dwarf3.
(output_die) [dw_val_class_die_ref]: Likewise.
(output_compilation_unit_header): Emit correct version for dwarf3.
(output_line_info): Likewise.
(output_pubnames): Update for DWARF_VERSION removal.
(output_aranges): Likewise.
(gen_subprogram_die): Emit DW_OP_call_frame_cfa if emitting dwarf3.
(dwarf2out_init): Don't ifdef DEBUG_PUBTYPES_SECTION.
(dwarf2out_finish): Likewise.
ada/
* gcc-interface/misc.c (gnat_handle_option): Rename
OPT_gdwarf_ to OPT_gdwarfplus.
From-SVN: r148408
