On Monday, February 09, 2015 09:03:24 PM John Baldwin wrote: > Author: jhb > Date: Mon Feb 9 21:03:23 2015 > New Revision: 278474 > URL: https://svnweb.freebsd.org/changeset/base/278474 > > Log: > Use __builtin_popcnt() to implement a BIT_COUNT() operation for bitsets > and use this to implement CPU_COUNT() to count the number of CPUs in a > cpuset. > > MFC after: 2 weeks
Yes, __builtin_popcnt() works with GCC 4.2. It should also allow the compiler to DTRT in userland uses of this if -msse4.2 is enabled. -- John Baldwin _______________________________________________ svn-src-all@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/svn-src-all To unsubscribe, send any mail to "svn-src-all-unsubscr...@freebsd.org"
