[Bug debug/91888] GCC will write absolute paths into DW_AT_GNU_dwo_name even with -fdebug-prefix-map

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=91888

--- Comment #2 from Richard Biener <rguenth at gcc dot gnu.org> ---
not sure if debug-prefix-map applies to dwo filenames... (well, appearantly it
does not).  -gsplit-dwarf isn't really very well maintained.