On Wed, Oct 14, 2020 at 01:01:32PM +0200, Mark Wielaard wrote: > Some old GCC versions between 4.5.0 and 4.9.1 might miscompile code > with -fvar-tracking-assingments (which is enabled by default with -g -O2). > commit 2062afb4f added -fno-var-tracking-assignments unconditionally to > work around this. But newer versions of GCC no longer have this bug, so > only add it for versions of GCC before 5.0.
Add ... This allows various tools such as a perf probe or gdb debuggers or systemtap to resolve variable locations using dwarf locations in more code. > > Signed-off-by: Mark Wielaard <[email protected]> > Acked-by: Ian Rogers <[email protected]> > Cc: [email protected] > Cc: Andi Kleen <[email protected]> > Cc: Nick Desaulniers <[email protected]> > Cc: Segher Boessenkool <[email protected]> > Cc: Florian Weimer <[email protected]> Reviewed-by: Andi Kleen <[email protected]> -Andi
