http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54419
--- Comment #6 from Jack Howarth <howarth at nitro dot med.uc.edu> 2012-08-31 14:48:47 UTC --- This same issue was discussed in the following thread... http://thread.gmane.org/gmane.linux.kernel/1145078 specifically.... Comments/Questions: * Since RDRAND is relatively new, only the most recent version of binutils supports assembling it. To avoid breaking builds for people who use older toolchains but want this feature, I hardcoded the opcodes. If anyone has a better approach, please let me know. It looks like that uncommitted patch hasn't been modified to address this issue either.
