spill-before ( before -- before/f )

Vocabulary
compiler.cfg.linear-scan.allocation.spilling

Inputs

before

Outputs

before/f

Word description
If the interval does not have any usages before the spill location, then it is the second child of an interval that was split. We reload the value and let the resolve pass insert a spill later.

See also
spill-after

Definition

USING: accessors combinators kernel sequences ;

IN: compiler.cfg.linear-scan.allocation.spilling

: spill-before ( before -- before/f )
dup uses>> empty?
[ drop f ] [
{
[ ]
[ assign-spill ]
[ trim-before-ranges ]
[ check-ranges ]
} cleave
] if ;