case "amd64.LEAQ":
		dst = 8
		addr = true
	default:
		switch fn.arch.name {
		case "386", "amd64":
			if strings.HasPrefix(op, "F") && (strings.HasSuffix(op, "D") || strings.HasSuffix(op, "DP")) {
				// FMOVDP, FXCHD, etc
				src = 8
				break
			}
			if strings.HasPrefix(op, "P") && strings.HasSuffix(op, "RD") {
				// PINSRD, PEXTRD, etc
				src = 4
				break
			}