CLDEMOTE BX                      // ERROR "invalid instruction"
	// WAITPKG instructions:
	TPAUSE (BX)                      // ERROR "invalid instruction"
	UMONITOR (BX)                    // ERROR "invalid instruction"
	UMWAIT (BX)                      // ERROR "invalid instruction"
	// .Z instructions
	VMOVDQA32.Z Z0, Z1               // ERROR "mask register must be specified for .Z instructions"