active-positions ( new assoc -- )

Vocabulary

compiler.cfg.linear-scan.allocation

Inputs

new	a live-interval-state
assoc	an assoc

Outputs

None

Word description

Looks at the active-intervals and sets to 0 those registers in 'assoc' that can't be used for allocation.

Definition

USING: accessors arrays assocs
compiler.cfg.linear-scan.allocation.state kernel sequences ;

IN: compiler.cfg.linear-scan.allocation

: active-positions ( new assoc -- )
    swap active-intervals-for [ reg>> 0 2array ] map
    assoc-union! drop ;