https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88465
Jakub Jelinek <jakub at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |hjl.tools at gmail dot com, | |jakub at gcc dot gnu.org --- Comment #1 from Jakub Jelinek <jakub at gcc dot gnu.org> --- I can't find any instruction that would set a mask register directly to an immediate, besides the 0 and -1 cases you've mentioned (which could be used also for 255, 65535 and 0xffffffff constants).