129 lines
4.2 KiB
Factor
129 lines
4.2 KiB
Factor
! Copyright (C) 2008 Slava Pestov.
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! See http://factorcode.org/license.txt for BSD license.
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USING: fry accessors kernel sequences sequences.private assocs words
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namespaces classes.algebra combinators classes classes.tuple
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classes.tuple.private continuations arrays byte-arrays strings
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math math.partial-dispatch math.private slots generic
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generic.standard generic.math
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compiler.tree
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compiler.tree.propagation.info
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compiler.tree.propagation.nodes
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compiler.tree.propagation.slots
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compiler.tree.propagation.inlining
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compiler.tree.propagation.constraints ;
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IN: compiler.tree.propagation.simple
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! Propagation for straight-line code.
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M: #introduce propagate-before
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out-d>> [ object-info swap set-value-info ] each ;
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M: #push propagate-before
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[ literal>> <literal-info> ] [ out-d>> first ] bi
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set-value-info ;
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: refine-value-infos ( classes values -- )
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[ refine-value-info ] 2each ;
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: class-infos ( classes -- infos )
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[ <class-info> ] map ;
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: set-value-infos ( infos values -- )
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[ set-value-info ] 2each ;
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M: #declare propagate-before
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declaration>> [ <class-info> swap refine-value-info ] assoc-each ;
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: predicate-constraints ( value class boolean-value -- constraint )
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[ [ is-instance-of ] dip t--> ]
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[ [ class-not is-instance-of ] dip f--> ]
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3bi /\ ;
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: custom-constraints ( #call quot -- )
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[ [ in-d>> ] [ out-d>> ] bi append ] dip
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with-datastack first assume ;
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: compute-constraints ( #call word -- )
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dup +constraints+ word-prop [ nip custom-constraints ] [
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dup predicate? [
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[ [ in-d>> first ] [ out-d>> first ] bi ]
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[ "predicating" word-prop ] bi*
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swap predicate-constraints assume
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] [ 2drop ] if
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] if* ;
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: call-outputs-quot ( #call word -- infos )
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[ in-d>> [ value-info ] map ] [ +outputs+ word-prop ] bi*
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with-datastack ;
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: foldable-call? ( #call word -- ? )
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"foldable" word-prop
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[ in-d>> [ value-info literal?>> ] all? ] [ drop f ] if ;
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: fold-call ( #call word -- infos )
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[ [ out-d>> ] [ in-d>> [ value-info literal>> ] map ] bi ] [ '[ , execute ] ] bi*
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'[ , , with-datastack [ <literal-info> ] map nip ]
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[ drop [ object-info ] replicate ]
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recover ;
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: predicate-output-infos ( info class -- info )
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[ class>> ] dip {
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{ [ 2dup class<= ] [ t <literal-info> ] }
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{ [ 2dup classes-intersect? not ] [ f <literal-info> ] }
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[ object-info ]
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} cond 2nip ;
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: propagate-predicate ( #call word -- infos )
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[ in-d>> first value-info ] [ "predicating" word-prop ] bi*
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predicate-output-infos 1array ;
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: default-output-value-infos ( #call word -- infos )
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"default-output-classes" word-prop
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[ class-infos ] [ out-d>> length object-info <repetition> ] ?if ;
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: output-value-infos ( #call word -- infos )
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{
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{ [ 2dup foldable-call? ] [ fold-call ] }
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{ [ dup tuple-constructor? ] [ propagate-tuple-constructor ] }
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{ [ dup sequence-constructor? ] [ propagate-sequence-constructor ] }
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{ [ dup predicate? ] [ propagate-predicate ] }
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{ [ dup +outputs+ word-prop ] [ call-outputs-quot ] }
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[ default-output-value-infos ]
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} cond ;
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: do-inlining ( #call word -- ? )
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{
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{ [ dup always-inline-word? ] [ always-inline-word ] }
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{ [ dup standard-generic? ] [ inline-standard-method ] }
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{ [ dup math-generic? ] [ inline-math-method ] }
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{ [ dup math-partial? ] [ inline-math-partial ] }
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{ [ dup method-body? ] [ inline-method-body ] }
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[ 2drop f ]
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} cond ;
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M: #call propagate-before
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dup word>> 2dup do-inlining [ 2drop ] [
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[ [ output-value-infos ] [ drop out-d>> ] 2bi set-value-infos ]
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[ compute-constraints ]
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2bi
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] if ;
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M: #call annotate-node
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dup [ in-d>> ] [ out-d>> ] bi append (annotate-node) ;
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: propagate-input-classes ( node input-classes -- )
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class-infos swap in-d>> refine-value-infos ;
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M: #call propagate-after
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dup word>> "input-classes" word-prop dup
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[ propagate-input-classes ] [ 2drop ] if ;
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M: #alien-invoke propagate-before
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out-d>> [ object-info swap set-value-info ] each ;
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M: #alien-indirect propagate-before
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out-d>> [ object-info swap set-value-info ] each ;
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M: #return annotate-node
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dup in-d>> (annotate-node) ;
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