On Dec 20, 2007, Ian Lance Taylor <[EMAIL PROTECTED]> wrote: > Right, which will significantly increase debugging size as you add two > more notes around many lines.
FWIW, I've just got powerpc64-linux-gnu to pass bootstrap-debug and bootstrap4-debug/-g0 (i.e., all host and target libraries pass compare-debug when compiled with -g0 and -g2 -fvar-tracking-assignments). I did bootstrap4-debug/-fno-var-tracking-assignments as well, for comparison purposes. Here are the total sizes: 1487400 target libs at -g0 2239140 target libs with -g2 -fno-var-tracking-assignments 2190176 target libs with -g2 -fvar-tracking-assignments So, with the new infrastructure in place, debug info gets smaller. I haven't evaluated its quality yet (e.g., the compiler may be losing track of where variables are too often). Also, the compiler is still missing the improved version of var-tracking to keep track of all copies of user variable values, which is expected to grow debug info. But at least at this point it doesn't seem like the approach is hopeless. -- Alexandre Oliva http://www.lsd.ic.unicamp.br/~oliva/ FSF Latin America Board Member http://www.fsfla.org/ Red Hat Compiler Engineer [EMAIL PROTECTED], gcc.gnu.org} Free Software Evangelist [EMAIL PROTECTED], gnu.org}
