required-register-uses ( intervals/sync-points -- uses )


Vocabulary
compiler.cfg.linear-scan.checker

Inputs
intervals/sync-pointsan object


Outputs
usesan object


Definition
USING: accessors arrays compiler.cfg.linear-scan.live-intervals
kernel sequences sorting ;

IN: compiler.cfg.linear-scan.checker

:: required-register-uses ( intervals/sync-points -- uses )
intervals/sync-points [ live-interval-state? ] filter [|
interval |
interval uses>> [ spill-slot?>> not ] filter
[| use | interval vreg>> use n>> 2array ] map
] map concat natural-sort ;