http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59639
Andrew Pinski <pinskia at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Status|UNCONFIRMED |RESOLVED Resolution|--- |DUPLICATE --- Comment #3 from Andrew Pinski <pinskia at gcc dot gnu.org> --- (In reply to Avi Kivity from comment #2) > (In reply to Andrew Pinski from comment #1) > > The option you want is -freorder-blocks-and-partition but it only does > > something when there are real profiling info (aka > > -fprofile-generate/-fprofile-use). > > No. The function slow_path() will be placed in .text.unlikely, without > -freorder-blocks-and-partition, so gcc already knows about cold paths even > without this option. > > Adding -freorder-blocks-and-partition does not change the output, even > though gcc knows the probability even without profiling information. As I said before, you need to use -fprofile-generate/-fprofile-use with that option. See bug 26493 which this is a duplicate of that one. > > This is similar to __builtin_expect(), except that I cannot use > __builtin_expect() with asm goto. *** This bug has been marked as a duplicate of bug 26493 ***