##local-allot
Basic block instructions

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Vocabulary
compiler.cfg.instructions

Class description
An instruction for allocating memory in the words own stack frame. It's mostly used for receiving data from alien calls. It has the following slots:

dst	Register into which a pointer to the stack allocated memory is put.
size	Number of bytes to allocate.
offset

See also
##allot

Definition

IN: compiler.cfg.instructions

TUPLE: ##local-allot < flushable-insn
    dst size align offset insn# ;

Methods

USING: accessors compiler.cfg.gvn.avail
compiler.cfg.instructions kernel ;

M: ##local-allot >avail-insn-defs [ ] change-dst drop ;


USING: accessors compiler.cfg.instructions
compiler.cfg.linear-scan.assignment kernel ;

M: ##local-allot assign-insn-defs [ vreg>reg ] change-dst drop ;


USING: accessors compiler.cfg.build-stack-frame
compiler.cfg.instructions kernel math math.order namespaces ;

M:: ##local-allot compute-stack-frame* ( insn -- ? )
    insn size>> :> s insn align>> :> a allot-area-align
    [ a max ] change allot-area-size
    [ a align [ insn offset<< ] [ s + ] bi ] change t ;


USING: accessors compiler.cfg.instructions
compiler.cfg.representations.rewrite kernel ;

M: ##local-allot convert-insn-defs
    [ converted-value ] change-dst drop ;


USING: compiler.cfg.instructions
compiler.cfg.representations.preferred cpu.architecture kernel ;

M: ##local-allot defs-vreg-reps drop { int-rep } ;


USING: accessors arrays compiler.cfg.def-use
compiler.cfg.instructions ;

M: ##local-allot defs-vregs dst>> 1array ;


USING: accessors compiler.cfg.instructions compiler.codegen
cpu.architecture kernel ;

M: ##local-allot generate-insn
    [ dst>> ] keep [ size>> ] keep [ align>> ] keep
    [ offset>> ] keep drop %local-allot ;


USING: accessors compiler.cfg.instructions compiler.cfg.renaming
kernel ;

M: ##local-allot rename-insn-defs
    [ rename-value ] change-dst drop ;


USING: accessors compiler.cfg.instructions
compiler.cfg.ssa.construction.private kernel ;

M: ##local-allot ssa-rename-insn-defs
    [ gen-name ] change-dst drop ;