See conversation here:
https://github.com/openjdk/jdk/pull/29130/files#r2697519994

It is about vectorizing operations like Byte.toUnsignedInt

We may have to change some code here:
SuperWord::is_velt_basic_type_compatible_use_def

Example:

./java -XX:CompileCommand=compileonly,Test::test -XX:CompileCommand=printcompilation,Test::test -Xbatch -XX:+TraceSuperWord Test.java

We find LoadUB and StoreI packs, but they are directly connected without any cast, so the cast is implicit here. But we can probably just insert the cast somehow during auto vectorization.