[foreign-memaccess+abi] RFR: 8262118: Specialize upcalls [v2]

[Maurizio Cimadamore]

On Tue, 23 Feb 2021 10:50:16 GMT, Maurizio Cimadamore <mcimadamore at openjdk.org> wrote:

>> Jorn Vernee has updated the pull request incrementally with two additional commits since the last revision:
>> 
>>  - Tab to spaces
>>  - Added TestMatrix test that test all configurations of TestUpcall TestDowncall and TestUpcallHightArity
>
> src/jdk.incubator.foreign/share/classes/jdk/internal/foreign/abi/ProgrammableInvoker.java line 243:
> 
>> 241: 
>> 242:         if (bufferCopySize > 0) {
>> 243:             specializedHandle = SharedUtils.wrapWithAllocator(specializedHandle, argAllocatorPos, bufferCopySize, false);
> 
> The variable leafType in this method is unused (I couldn't leave the comment there - for some reason GitHub doesn't allow me to add comments outside the highlighted areas...)

+1 for dedicated TWR routine - which is now cleanly shared by upcall and downcall logic.

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PR: https://git.openjdk.java.net/panama-foreign/pull/457