boxing + unboxing a VT is not a no-op ?

[Tobias Hartmann]

Hi Remi,

I had a look at the C2 generated code for valuelist_intbox_innervalue_inlined_reduce and it is
essentially the same highly optimized code that is generated for valuelist_intbox_inlined_reduce.

I'm not able to measure a performance difference either. Were you able to reproduce this with the
latest version of the repo? Maybe some of our recent patches fixed this problem as well.

Thanks,
Tobias