;;; Emit the most compact form of the test immediate instruction,
;;; using an 8 bit test when the immediate is only 8 bits and the
;;; value is one of the four low registers (eax, ebx, ecx, edx) or the
;;; Emit the most compact form of the test immediate instruction,
;;; using an 8 bit test when the immediate is only 8 bits and the
;;; value is one of the four low registers (eax, ebx, ecx, edx) or the