* dwarf2out.c (struct gcc_debug_hooks): Call dwarf2out_begin_function
at the beginning of function, call dwarf2out_var_location for
NOTE_INSN_VAR_LOCATION note.
(struct var_loc_node, struct var_loc_list_def, loclabel_num,
decl_loc_table): New.
(lookup_decl_loc): New function.
(add_var_loc_to_decl): New function.
(based_loc_descr): Added parameter can_use_fbreg, DW_OP_fbreg is used
only if can_use_fbreg.
(mem_loc_descriptor): Added parameter can_use_fbreg, pass it to other
functions.
(loc_descriptor): Likewise. Process VAR_LOCATION.
(concat_loc_descriptor): Call loc_descriptor with can_use_fbreg == true.
(loc_descriptor_from_tree): Call mem_loc_descriptor with
can_use_fbreg == true.
(add_location_or_const_value_attribute): Added parameter enum
dwarf_attribute attr, generate attribute ATTR. Create the location list.
(add_bound_info): Call loc_descriptor with can_use_fbreg == true.
(gen_formal_parameter_die): Call add_location_or_const_value_attribute
with attr == DW_AT_location.
(gen_subprogram_die): Generate the location list for DW_AT_frame_base
if frame_base_decl is defined and has a location list.
(gen_variable_die): Call add_location_or_const_value_attribute with
attr == DW_AT_location.
(dwarf2out_var_location): New function.
(dwarf2out_begin_function): New function.
(dwarf2out_init): Create decl_loc_table.
Co-Authored-By: Josef Zlomek <zlomekj@suse.cz>
From-SVN: r77421
