72 lines
1.8 KiB
Factor
72 lines
1.8 KiB
Factor
! Copyright (C) 2009 Slava Pestov.
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! See http://factorcode.org/license.txt for BSD license.
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USING: assocs compiler.cfg.instructions compiler.cfg.registers
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compiler.cfg.ssa.destruction.leaders cpu.architecture deques
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dlists fry kernel locals make namespaces sequences ;
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QUALIFIED: sets
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IN: compiler.cfg.parallel-copy
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<PRIVATE
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SYMBOLS: locs preds to-do ready ;
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: init-to-do ( bs -- )
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to-do get push-all-back ;
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: init-ready ( bs -- )
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locs get '[ _ key? ] reject ready get push-all-front ;
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: init ( mapping -- )
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<dlist> to-do set
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<dlist> ready set
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[ preds set ]
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[ [ nip dup ] H{ } assoc-map-as locs set ]
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[ keys [ init-to-do ] [ init-ready ] bi ] tri ;
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:: process-ready ( b quot: ( dst src -- ) -- )
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b preds get at :> a
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a locs get at :> c
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b c quot call
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b a locs get set-at
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a c = a preds get at and [ a ready get push-front ] when ; inline
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:: process-to-do ( b temp: ( src -- dst ) quot: ( dst src -- ) -- )
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b locs get at b = [
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b temp call :> temp
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temp b quot call
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temp b locs get set-at
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b ready get push-front
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] when ; inline
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PRIVATE>
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:: parallel-mapping ( mapping temp: ( src -- dst ) quot: ( dst src -- ) -- )
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[
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mapping init
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to-do get [
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ready get [
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quot process-ready
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] slurp-deque
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temp quot process-to-do
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] slurp-deque
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] with-scope ; inline
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: parallel-copy ( mapping -- insns )
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[ next-vreg '[ drop _ ] [ any-rep ##copy, ] parallel-mapping ] { } make ;
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<PRIVATE
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SYMBOL: temp-vregs
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: temp-vreg ( rep -- vreg )
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temp-vregs get [ next-vreg-rep ] cache
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[ leader-map get sets:conjoin ] keep ;
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PRIVATE>
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: parallel-copy-rep ( mapping -- insns )
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[
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H{ } clone temp-vregs set
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[ rep-of temp-vreg ] [ dup rep-of ##copy, ] parallel-mapping
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] { } make ;
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