[lworld] RFR: 8361250: [lworld] use more IRNode regexes in valhalla IR tests [v2]

[Marc Chevalier]

On Wed, 9 Jul 2025 13:29:11 GMT, Marc Chevalier <mchevalier at openjdk.org> wrote:

>> InlineTypeIRNode is Valhalla-specific and somewhat... antique. I've run into an issue where the old-timey regex for allocation didn't do the job. So, rather than reproducing the fix of [JDK-8314999](https://bugs.openjdk.org/browse/JDK-8314999) again, let's simply use `IRNode`'s regex for Valhalla as well.
>> 
>> The general idea: let's not define node regex specifically for Valhalla, but only for values. I've also introduced regexes for combinations we do all the time: for instance rather than having `ALLOC_OF, ANY_KLASS`, I made a `ALLOC_OF_ANY_KLASS`.
>> 
>> So what now:
>> - `InlineTypeRegexes` => only value regexes.
>> - `IRNode` => adapted to allow to define specialisation for `ALLOC_OF`, `ALLOC_ARRAY_OF`, `LOAD_OF_CLASS`, `STORE_OF_CLASS`, `STATIC_CALL_OF_METHOD` for specific classes/functions.
>> - `InlineTypeIRNode` => define specialisations using the regexes defined in `InlineTypeRegexes`, nothing more!
>> - `compiler/valhalla/inlinetypes/Test*` => use `IRNode` and `InlineTypeIRNode`.
>
> Marc Chevalier has updated the pull request incrementally with one additional commit since the last revision:
> 
>   Address comments

Thanks @TobiHartmann!

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

PR Comment: https://git.openjdk.org/valhalla/pull/1503#issuecomment-3056051303