https://gcc.gnu.org/bugzilla/show_bug.cgi?id=80569
--- Comment #12 from ro at CeBiTec dot Uni-Bielefeld.DE <ro at CeBiTec dot Uni-Bielefeld.DE> --- 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'