45 lines
1.2 KiB
Factor
45 lines
1.2 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.dataflow-analysis compiler.cfg.stacks.local
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kernel namespaces sequences sets ;
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IN: compiler.cfg.stacks.global
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: peek-set ( bb -- assoc ) peek-sets get at ;
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: replace-set ( bb -- assoc ) replace-sets get at ;
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: kill-set ( bb -- assoc ) kill-sets get at ;
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! Should exists somewhere else
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: refine ( sets -- set )
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[ f ] [ [ ] [ intersect ] map-reduce ] if-empty ;
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: transfer-peeked-locs ( set bb -- set' )
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[ replace-set diff ] [ peek-set union ] bi ;
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BACKWARD-ANALYSIS: anticip
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M: anticip transfer-set drop transfer-peeked-locs ;
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M: anticip join-sets 2drop refine ;
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BACKWARD-ANALYSIS: live
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M: live transfer-set drop transfer-peeked-locs ;
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M: live join-sets 2drop combine ;
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FORWARD-ANALYSIS: avail
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M: avail transfer-set
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drop [ peek-set ] [ replace-set ] bi union union ;
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M: avail join-sets 2drop refine ;
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FORWARD-ANALYSIS: pending
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M: pending transfer-set
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drop replace-set union ;
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M: pending join-sets 2drop refine ;
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BACKWARD-ANALYSIS: dead
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M: dead transfer-set
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drop [ kill-set ] [ replace-set ] bi union union ;
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M: dead join-sets 2drop refine ;
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