RFR(S): 8210389: C2: assert(n->outcnt() != 0 || C->top() == n || n->is_Proj()) failed: No dead instructions after post-alloc

[Roland Westrelin]

Hi Vladimir,

Thanks for looking at this.

> Why you are not using subsume_by()?

Instead of disconnect_inputs()? Or as a replacement for the loop? I want
all nodes that become useless as a result of the edge removal to be
disconnected. subsume_by() wouldn't do as that AFAICT.

Roland.