Rohit Arul Raj <rohitarulraj@xxxxxxxxx> writes: > Further, by default the debug info for variables 'd1' and 'f1' are > generated as location expressions. Where as with '-fvar-tracking', the > debug info is generated as location lists. > > 1) Is it possible to generate location expressions to identify that > the variable has been optimized out? I don't know. > 2) If (1) is not possible and if '-fvar-tracking' gives accurate info > on live variables, why isn't it turned ON by default at '-O0'? That is a good question. Right now -fvar-tracking is turned on by default at -O1. I guess the assumption was that at -O0 variables wouldn't wind up in the same register. > Since the code is compiled at '-O0' should correct debug info be generated? Yes. Ian
