Get neighbours of the node Chaitin: neighbors()

@param c Collection to be added

@return list is empty

Kill a Node with no <em>uses</em>, by setting all of its <em>defs</em> to null. This may recursively kill more Nodes, and is basically dead code elim

Lookup a name in all scopes starting from most deeply nested. @param name Name to be looked up @return null if not found, or the implementing Node

Debugging utility to find a Node by index

Add element in amortized constant time @param e Element to add at end of list

Set existing element @param i element to set @param e value to set @return old value @exception AIOOBE if !(0 <= i < _len)

@return remove and return last element

If the instruction defines a var then return the Register else null

Can we assign a value of other type to a var of this type?

Pushes a Node on the WorkList, ensuring no duplicates If Node is null it will not be added.

Slow, linear-time, element removal. Preserves order. @param i element to be removed @return element removed

Get the registers used by this instruction. Non register operands are not included.