spill-weight ( interval -- weight )


Vocabulary
compiler.cfg.register-allocation.greedy

Inputs
intervalan object


Outputs
weightan object


Definition
USING: accessors assocs kernel math namespaces sequences ;

IN: compiler.cfg.register-allocation.greedy

: spill-weight ( interval -- weight )
dup minimal-interval?
[ drop 1/0. ] [
[
uses>>
[ n>> greedy-use-weights get at 1 or ] map-sum
] [ interval-size ] bi /
] if ;