> is like IRHydra
It does 'IR' part of the IRHydra, but it does not give you another important feature - ability to see how your function evolved over time and figure out reasons for it. Loading files one by one in search for the right version is pretty cumbersome.
I was always hoping that V8 will eventually get proper Dev Tools integration for compiler / runtime internals - and I think things have finally started happening in that area.