On Thu, 23 Oct 2025 12:12:03 GMT, Frederic Parain <[email protected]> wrote:
>> src/java.base/share/classes/java/lang/runtime/ValueObjectMethods.java line
>> 1417:
>>
>>> 1415: int size = map[i * 2 + 2];
>>> 1416: int nlong = size / 8;
>>> 1417: for (int j = 0; j < nlong; j++) {
>>
>> Are we sure that for all value objects with `size >= 8`, they are always
>> 8-byte aligned?
>
> There's a processing during the map generation that ensures this property
> (see last loop in FieldLayoutBuilder::generate_acmp_maps().
I hate to ask but doesn't memcmp do this, ie optimize the sizes for comparison?
Or is there a Java API that does this compare a, b for size and compare long
first?
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PR Review Comment:
https://git.openjdk.org/valhalla/pull/1695#discussion_r2457012287
