RFR: 8333867: SHA3 performance can be improved [v3]

[Valerie Peng]

On Fri, 14 Jun 2024 10:39:45 GMT, Ferenc Rakoczi <duke at openjdk.org> wrote:

>> This PR removes some unnecessary conversions between byte arrays and long arrays during SHA3 digest computations.
>
> Ferenc Rakoczi has updated the pull request incrementally with one additional commit since the last revision:
> 
>   Accept more review suggestions

src/java.base/share/classes/sun/security/provider/SHA3.java line 137:

> 135:             asLittleEndian.set(out, ofs, state[numLongs - 1]);
> 136:         } else {
> 137:             asLittleEndian.set(byteState, 0, state[numLongs - 1]);

So, is the performance better placing the `byteState` declaration up there at line 111 instead of here? It's only used in this block...

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PR Review Comment: https://git.openjdk.org/jdk/pull/19632#discussion_r1640180265