https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81763
--- Comment #48 from Uroš Bizjak <ubizjak at gmail dot com> --- (In reply to Mike Lothian from comment #47) > With the patch you've committed to gcc master, applied on top of GCC 7.3 I'm > now seeing the following error building Clang: I don't think this is related to the original bugreport involving BMI instructions. Could be Clang's source incompatibility with 32bit target. In any case, please open a new PR.