On Fri, 13 Oct 2023 17:01:11 GMT, Shaojin Wen <d...@openjdk.org> wrote:
>> I submitted PR #15555 before, and there were too many changes. I split it
>> into multiple PRs with small changes. This one is one of them.
>>
>> this PR removed the duplicate code for getChars in
>> BigDecimal#StringBuilderHelper, i also make performance faster.
>> Please review and don't hesitate to critique my approach and patch.
>
> Shaojin Wen has updated the pull request incrementally with one additional
> commit since the last revision:
>
> use % calculate lowInt
I have found the reason. Using the following recipe is faster every time:
MethodType.methodType(String.class, long.class, char.class, char.class,
char.class),
"\1\1\1\1"
* Using the following recipe is sometimes faster and sometimes slower, because
there is a prepare(long indexCoder, byte[] buf, String value) operation here
MethodType.methodType(String.class, long.class, char.class, char.class),
"\1.\1\1"
-------------
PR Comment: https://git.openjdk.org/jdk/pull/16006#issuecomment-1764634547
