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Mapped location support * back_end.adb (Call_Back_End): Pass information about source files instead of units to gigi. * gigi.h (struct File_Info_Type): New. (gigi): Rename and change type of number_units parameter, change type of file_info_ptr parameter. * trans.c (number_files): New global variable. (gigi): Rename and change type of number_units parameter, change type of file_info_ptr parameter. If mapped location support is enabled, create the isomorphic mapping between source files and line maps. (Sloc_to_locus): If mapped location support is enabled, translate source location into mapped location. (annotate_with_node): Rename into set_expr_location_from_node. Call set_expr_location instead of annotate_with_locus. (Pragma_to_gnu): Adjust for above change. (Loop_Statement_to_gnu): Likewise. (call_to_gnu): Likewise. (Handled_Sequence_Of_Statements_to_gnu): Likewise. (gnat_to_gnu): Likewise. (add_stmt_with_node): Likewise. (add_cleanup): Likewise. * utils.c (gnat_init_decl_processing): Do not set input_line. From-SVN: r128839
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