prefix = "qword "
		case LAR:
			prefix = "word "
		case BOUND:
			if inst.Mode == 32 {
				prefix = "qword "
			} else {
				prefix = "dword "
			}
		case PREFETCHW, PREFETCHNTA, PREFETCHT0, PREFETCHT1, PREFETCHT2, CLFLUSH:
			prefix = "zmmword "
		}
		switch inst.Op {