https://gcc.gnu.org/bugzilla/show_bug.cgi?id=38534
--- Comment #18 from H.J. Lu <hjl.tools at gmail dot com> --- (In reply to Jakub Jelinek from comment #17) > E.g. shouldn't it at least be disabled for -O0 and -Og and shouldn't we We can disable this for -O0 and -Og. > somehow indicate in DWARF unwind info that the callee saved registers > weren't saved and were clobbered? Even if backtrace itself still works make Is there such a DWARF bit? > it clear that if debugger unwinds to caller frame that certain registers > have unknown values rather than the restored ones.
