switch name {
	case "F":
		if 0 <= n && n <= 31 {
			return loong64.REG_F0 + n, true
		}
	case "FCSR":
		if 0 <= n && n <= 31 {
			return loong64.REG_FCSR0 + n, true
		}
	case "FCC":
		if 0 <= n && n <= 31 {
			return loong64.REG_FCC0 + n, true
		}
	case "R":
		if 0 <= n && n <= 31 {
			return loong64.REG_R0 + n, true
		}
	}
	return 0, false