On Tue, 7 Mar 2023 13:39:50 GMT, Coleen Phillimore <cole...@openjdk.org> wrote:

>> The current structure used to store the resolution information for 
>> invokedynamic, ConstantPoolCacheEntry, is difficult to interpret due to its 
>> ambigious fields f1 and f2. This structure can hold information for fields, 
>> methods, and invokedynamics and each of its fields can hold different types 
>> of values depending on the entry. 
>> 
>> This enhancement proposes a new structure to exclusively contain 
>> invokedynamic information in a manner that is easy to interpret and easy to 
>> extend.  Resolved invokedynamic entries will be stored in an array in the 
>> constant pool cache and the operand of the invokedynamic bytecode will be 
>> rewritten to be the index into this array.
>> 
>> Any areas that previously accessed invokedynamic data from 
>> ConstantPoolCacheEntry will be replaced with accesses to this new array and 
>> structure. Verified with tier1-9 tests.
>> 
>> The PPC was provided by @reinrich and the RISCV port was provided by 
>> @DingliZhang and @zifeihan.
>> 
>> This change supports the following platforms: x86, aarch64, PPC, and RISCV
>
> src/hotspot/share/ci/ciReplay.cpp line 419:
> 
>> 417:       be used to avoid multiple blocks of similar code. When CPCE is 
>> obsoleted
>> 418:       these can be removed
>> 419:       */
> 
> I don't know if you really need this comment.  If so, use // style instead.

I think it's worth keeping around as a reminder for cleanup down the line since 
it's easy to overlook. I will change it to // style.

-------------

PR: https://git.openjdk.org/jdk/pull/12778

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