https://gcc.gnu.org/bugzilla/show_bug.cgi?id=80569
--- Comment #13 from Uroš Bizjak <ubizjak at gmail dot com> --- (In reply to r...@cebitec.uni-bielefeld.de from comment #12) > I've just checked a x86_64-apple-darwin11.4.2 build: the test PASSes for > -m64, but FAILs for -m32 with > > /var/folders/zz/zyxvpxvq6csfxvn_n000087r00021y/T//cchNxmiW.s:7:no such > instruction: `shrx %eax, 4(%esp),%eax' http://www.felixcloutier.com/x86/SARX:SHLX:SHRX.html