assign-spill-slot ( coalesced-vreg rep -- spill-slot )

Vocabulary

compiler.cfg.linear-scan.allocation.state

Inputs

coalesced-vreg	vreg
rep	a representation

Outputs

spill-slot

a spill-slot

Word description

Assigns a spill slot for the vreg. The stack frames spill area align is updated so that it is at least as large as the vregs size. Then a spill-slot is assigned for the vreg/rep-size combination if one hasn't already been assigned and is put on the stack.

See also

next-spill-slot

Definition

USING: accessors assocs compiler.cfg cpu.architecture kernel
namespaces ;

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

: assign-spill-slot ( coalesced-vreg rep -- spill-slot )
    rep-size spill-slots get [
        nip cfg get stack-frame>>
        [ align-spill-area ] [ next-spill-slot ] 2bi
    ] 2cache ;