allocation-order ( interval -- regs )

Vocabulary

compiler.cfg.register-allocation.greedy

Inputs

interval

an object

Outputs

regs

an object

Definition

USING: accessors arrays assocs
compiler.cfg.linear-scan.live-intervals kernel math namespaces
sorting ;

IN: compiler.cfg.register-allocation.greedy

:: allocation-order ( interval -- regs )
    interval interval-reg-class greedy-registers get at
    :> available interval interval-progress hint>> interval
    vreg>> greedy-copy-hints get at or [
        interval hint-scores :> scores scores assoc-empty?
        [ available >array ]
        [ available [ scores at 0 or neg ] sort-by ] if
    ] [ available >array ] if ;