On Mon, 16 May 2022 17:40:41 GMT, Jorn Vernee <jver...@openjdk.org> wrote:

>> Hi,
>> 
>> This PR brings over commits from the panama-foreign repo. These commits 
>> mostly pertain to the switch to ASM and away from MethodHandle combinators 
>> for the binding recipe specialization. But, there is one more commit which 
>> adds freeing of downcall stubs, since those changes were mostly Java as well.
>> 
>> Thanks,
>> Jorn
>> 
>> Testing: `run-test-jdk_foreign` with `-Dgenerator.sample.factor=-1` on 
>> Windows and Linux.
>
> Jorn Vernee has updated the pull request incrementally with one additional 
> commit since the last revision:
> 
>   BootstrapMethodError -> ExceptionInInitializerError

src/java.base/share/classes/jdk/internal/foreign/abi/BindingSpecializer.java 
line 157:

> 155:     }
> 156: 
> 157:     static MethodHandle doSpecialize(MethodHandle leafHandle, 
> CallingSequence callingSequence, ABIDescriptor abi) {

I think thise method should be split in to, one version for the upcall, one for 
the downcall, i do not see the point of merging the two codes.

src/java.base/share/classes/jdk/internal/foreign/abi/BindingSpecializer.java 
line 816:

> 814:             return;
> 815:         }
> 816:         if (con instanceof Integer) {

those can use the instanceof + type pattern

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

PR: https://git.openjdk.java.net/jdk/pull/8685

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