Switch to list all druntime calls?

[bearophile via Digitalmars-d]

Instead (or in addition) of this dmd compiler switch:
-vgc           list all hidden gc allocations

Isn't it more useful a compiler switch like "-noruntime" (similar 
to the switch of the ldc2 compiler) meant to list the lines of 
code where are implicit calls to runtime funcitions?

Bye,
bearophile