Cool, but it doesn't generate SBB in real code, but instead gives me something like this: xorl %r11d, %r11d cmpl %r12d, %eax seta %r11b And if I d

Cool, but it doesn't generate SBB in real code, but instead gives me something like this: xorl %r11d, %r11d cmpl %r12d, %eax seta %r11b And if I do both of these, side by side: tmp = rc.code < rc_bound ? ~0 : 0; if (rc.code < rc_bound) rc.range = rc_bound; Then GCC generates an if-else branch. Thus, inline assembly is the only option so far to prevent the compiler from doing something dumb.