RFR: 8320448: Accelerate IndexOf using AVX2 [v19]

[Volodymyr Paprotski]

On Fri, 17 May 2024 23:59:05 GMT, Scott Gibbons <sgibbons at openjdk.org> wrote:

>> test/jdk/java/lang/StringBuffer/IndexOf.java line 40:
>> 
>>> 38:   private static boolean failure = false;
>>> 39:   public static void main(String[] args) throws Exception {
>>> 40:     String testName = "IndexOf";
>> 
>> intentation
>
> Fixed

(missed a `git add`? don't see the updates for this file)

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PR Review Comment: https://git.openjdk.org/jdk/pull/16753#discussion_r1613870558