78 lines
2.1 KiB
Factor
78 lines
2.1 KiB
Factor
! Copyright (C) 2008, 2009 Slava Pestov.
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! See http://factorcode.org/license.txt for BSD license.
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USING: accessors classes classes.algebra classes.parser
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classes.tuple combinators combinators.short-circuit fry
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generic.parser kernel math namespaces quotations sequences slots
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splitting words compiler.cfg.instructions
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compiler.cfg.instructions.syntax
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compiler.cfg.value-numbering.graph ;
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IN: compiler.cfg.value-numbering.expressions
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TUPLE: constant-expr < expr value ;
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C: <constant> constant-expr
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M: constant-expr equal?
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over constant-expr? [
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[ value>> ] bi@
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2dup [ float? ] both? [ fp-bitwise= ] [
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{ [ [ class ] bi@ = ] [ = ] } 2&&
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] if
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] [ 2drop f ] if ;
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TUPLE: reference-expr < expr value ;
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C: <reference> reference-expr
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M: reference-expr equal?
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over reference-expr? [ [ value>> ] bi@ eq? ] [ 2drop f ] if ;
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M: reference-expr hashcode*
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nip value>> identity-hashcode ;
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: constant>vn ( constant -- vn ) <constant> expr>vn ; inline
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GENERIC: >expr ( insn -- expr )
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M: insn >expr drop next-input-expr ;
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M: ##load-immediate >expr val>> <constant> ;
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M: ##load-reference >expr obj>> <reference> ;
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M: ##load-constant >expr obj>> <constant> ;
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<<
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: input-values ( slot-specs -- slot-specs' )
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[ type>> { use literal constant } member-eq? ] filter ;
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: expr-class ( insn -- expr )
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name>> "##" ?head drop "-expr" append create-class-in ;
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: define-expr-class ( insn expr slot-specs -- )
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[ nip expr ] dip [ name>> ] map define-tuple-class ;
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: >expr-quot ( expr slot-specs -- quot )
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[
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[ name>> reader-word 1quotation ]
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[
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type>> {
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{ use [ [ vreg>vn ] ] }
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{ literal [ [ ] ] }
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{ constant [ [ constant>vn ] ] }
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} case
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] bi append
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] map cleave>quot swap suffix \ boa suffix ;
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: define->expr-method ( insn expr slot-specs -- )
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[ 2drop \ >expr create-method-in ] [ >expr-quot nip ] 3bi define ;
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: handle-pure-insn ( insn -- )
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[ ] [ expr-class ] [ "insn-slots" word-prop input-values ] tri
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[ define-expr-class ] [ define->expr-method ] 3bi ;
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insn-classes get [ pure-insn class<= ] filter [ handle-pure-insn ] each
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>>
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