Function parse_as_imm64

cranelift/reader/src/parser.rs:3592–3594

(text: &str)

    #[test]
    fn i64_as_hex() {
        fn parse_as_imm64(text: &str) -> ParseResult<Imm64> {
            Parser::new(text).match_imm64("unable to parse Imm64")
        }

        assert_eq!(
            parse_as_imm64("0x8000000000000000").unwrap(),