##allot
Basic block instructions

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Vocabulary
compiler.cfg.instructions

Class description
An instruction for allocating memory in the nursery. Usually the instruction is preceded by ##check-nursery-branch which checks that there is enough room in the nursery to allocate. It has the following slots:

dst	Register to put the pointer to the memory in.
size	Number of bytes to allocate.
class-of	Class of object to allocate, e.g tuple or array.
temp	Temporary register to clobber.

Definition

IN: compiler.cfg.instructions

TUPLE: ##allot < flushable-insn dst size class-of temp insn# ;

Methods

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

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


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

M: ##allot >avail-insn-temps [ ] change-temp drop ;


USING: accessors compiler.cfg.gc-checks.private
compiler.cfg.instructions ;

M: ##allot allocation-size* size>> ;


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

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


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

M: ##allot assign-insn-temps [ vreg>reg ] change-temp drop ;


USING: accessors compiler.cfg.dce compiler.cfg.instructions
generic kernel namespaces sets ;

M: ##allot build-liveness-graph
    [ dst>> allocations get adjoin ]
    [ M\ ##allot build-liveness-graph (call-next-method) ] bi ;


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

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


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

M: ##allot convert-insn-temps [ ] change-temp drop ;


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

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


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

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


USING: accessors compiler.cfg.instructions
compiler.cfg.write-barrier ;

M: ##allot eliminate-write-barrier dst>> fresh-allocation t ;


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

M: ##allot generate-insn
    [ dst>> ] keep [ size>> ] keep [ class-of>> ] keep
    [ temp>> ] keep drop %allot ;


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

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


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

M: ##allot rename-insn-temps
    [ drop next-vreg ] change-temp drop ;


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

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


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

M: ##allot ssa-rename-insn-temps [ ] change-temp drop ;


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

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


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

M: ##allot temp-vregs temp>> 1array ;