RFR: 8316587: Use ArraysSupport.vectorizedHashCode in Utf8EntryImpl [v2]

[Chen Liang]

On Thu, 21 Sep 2023 13:43:30 GMT, Adam Sotona <asotona at openjdk.org> wrote:

>> Chen Liang has updated the pull request incrementally with one additional commit since the last revision:
>> 
>>   Fix logical bug with char array filling
>
> src/java.base/share/classes/jdk/internal/classfile/impl/AbstractPoolEntry.java line 236:
> 
>> 234:         private void inflate() {
>> 235:             int singleBytes = JLA.countPositives(rawBytes, offset, rawLen);
>> 236:             int hash = ArraysSupport.vectorizedHashCode(rawBytes, offset, singleBytes, 0, ArraysSupport.T_BOOLEAN);
> 
> We should keep in mind that this code is on lambdas bootstrap critical path.
> Any foreign code may involve lambdas or method references and cause dead end in lambdas initialization after JDK-8294960.

This is safe: these two functions are already used in String itself (see StringLatin1) which is definitely loaded and initialized before Classfile API and its implementations are.

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PR Review Comment: https://git.openjdk.org/jdk/pull/15837#discussion_r1333101060