[foreign-memaccess+abi] RFR: 8303017: Passing by-value structs whose size is not power of 2 doesn't work on all platforms [v2]

[Jorn Vernee]

On Thu, 2 Mar 2023 12:00:10 GMT, Maurizio Cimadamore <mcimadamore at openjdk.org> wrote:

>> Jorn Vernee has updated the pull request with a new target base due to a merge or a rebase. The pull request now contains 12 commits:
>> 
>>  - beef up test
>>  - Merge branch 'foreign-memaccess+abi' into OOB
>>  - review comments
>>  - move pickChunkOffset to SharedUtils
>>  - eyeball BE support
>>  - forgot bufferStore for AArch64
>>  - add check + fix aarch64
>>  - polish
>>  - polish test
>>  - chunked in specializer
>>  - ... and 2 more: https://git.openjdk.org/panama-foreign/compare/a7df48c8...84be4370
>
> src/java.base/share/classes/jdk/internal/foreign/abi/SharedUtils.java line 347:
> 
>> 345:     }
>> 346: 
>> 347:     public static int byteWidthOfPrimitive(Class<?> type) {
> 
> When we create memory access var handles, we use this to compute the byte size of a primitive (`VarHandles::memorySegmentViewHandle`):
> 
> 
> Wrapper.forPrimitiveType(carrier).bitWidth() / 8
> 
> 
> Perhaps we should put this into Utils and then reuse in both places?

Good idea. Done.

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PR: https://git.openjdk.org/panama-foreign/pull/806