expire-old-intervals ( n pending-heap -- )
Assigning registers to live intervals

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Vocabulary
compiler.cfg.linear-scan.assignment

Inputs and outputs
nan integer
pending-heapa min-heap


Word description
Expires all intervals older than the cutoff point. First they are removed from the 'pending-heap' and pending-interval-assoc. Then ##spill instructions are inserted for each interval that was removed.

Definition