For what it is worth: AdaMagic 2.787 (using gcc as the "back end") full optimization / Solaris 2.x / SPARCstation 5 / no linking: 183 files, 24297 semicolons, 68731 lines, 461.1 wall, 259.6 user cpu, 83.3 sys cpu (7 mins., 41 secs wall, 5 mins, 42 secs user+sys CPU) The Ada 95 front end (this version generates C source-as-intermediate) took up approximately 10% of the above time. The rest was spent in gcc. So the Ada 95 front end was running at about 25K semicolons/minute, or 80K lines/minute. -Tuck > Apex 2.4.1 / SunOS 5.5.1 / heavily loaded UltraSparc / no linking: > > 56 Files, 2510 SLOC (semicolons not in comments or literals): 10 minutes > > > gnat 3.10p / same machine / gcc -v -O3 -gnato *.ad? : > > 30 files, 3183 SLOC (same counting method): one minute, 50 seconds. > > gnat 3.10p / same machine / gcc -O3 -gnatg -gnata $ADA_INCLUDE_PATH/*.ad? : > > 551 files, 33742 SLOC (same counting method): 34 minutes, 21 seconds. > > / gcc -O0 -gnatg -gnata $ADA_INCLUDE_PATH/*.ad? : > > : 18 minutes, 35 seconds.