RFR: 8320448: Accelerate IndexOf using AVX2 [v19]

[Scott Gibbons]

On Tue, 14 May 2024 18:38:38 GMT, Sandhya Viswanathan <sviswanathan at openjdk.org> wrote:

>> Scott Gibbons has updated the pull request incrementally with one additional commit since the last revision:
>> 
>>   Rearrange; add lambdas for clarity
>
> src/hotspot/cpu/x86/stubGenerator_x86_64_string.cpp line 1784:
> 
>> 1782:       __ subq(tmp, haystack_len);
>> 1783:     }
>> 1784:     __ leaq(haystack, Address(rsp, tmp, Address::times_1));
> 
> This whole code is repeated in two places. Could be made into a function and used at both places.

This is the only place now.

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PR Review Comment: https://git.openjdk.org/jdk/pull/16753#discussion_r1605617739