X86FSET_CMP
if (is_x86_feature(x86_featureset, X86FSET_CMP) ||
if (is_x86_feature(feature, X86FSET_CMP)) {
add_x86_feature(featureset, X86FSET_CMP);
!is_x86_feature(featureset, X86FSET_CMP)) {