http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55309
--- Comment #5 from Markus Trippelsdorf <markus at trippelsdorf dot de> 2012-11-14 17:02:54 UTC --- (In reply to comment #4) > Also, this comparison doesn't have numbers for pure clang without > -fsanitize=address and gcc without -faddress-sanitizer, so likely most of the > speed differences can't be attributed just to asan. Yes. It was meant as a rough estimate. Here is a more complete result (clang trunk build with Release mode, gcc trunk with --enable-checking=release and lto/profiledbootstraped): clang (with-without): 1278.47-662.47 = 616 gcc (with-without): 2733.02-1168.07= 1564.95 That's still a 60.64% slowdown.
