27 lines
594 B
Factor
27 lines
594 B
Factor
! Copyright (C) 2008, 2010 Slava Pestov.
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! See http://factorcode.org/license.txt for BSD license.
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USING: assocs kernel namespaces ;
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IN: compiler.cfg.value-numbering.graph
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SYMBOL: input-expr-counter
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SYMBOL: vregs>vns
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SYMBOL: exprs>vns
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SYMBOL: vns>insns
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: vn>insn ( vn -- insn ) vns>insns get at ;
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: vreg>vn ( vreg -- vn ) vregs>vns get [ ] cache ;
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: set-vn ( vn vreg -- ) vregs>vns get set-at ;
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: vreg>insn ( vreg -- insn ) vreg>vn vn>insn ;
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: init-value-graph ( -- )
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0 input-expr-counter set
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H{ } clone vregs>vns set
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H{ } clone exprs>vns set
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H{ } clone vns>insns set ;
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