100 lines
2.9 KiB
Factor
100 lines
2.9 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: kernel accessors sequences classes.tuple
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classes.tuple.private arrays math math.private slots.private
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combinators deques search-deques namespaces fry classes
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classes.algebra assocs stack-checker.state
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compiler.tree
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compiler.tree.propagation.info
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compiler.tree.escape-analysis.nodes
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compiler.tree.escape-analysis.allocations ;
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IN: compiler.tree.escape-analysis.simple
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M: #declare escape-analysis* drop ;
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M: #terminate escape-analysis* drop ;
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M: #renaming escape-analysis* inputs/outputs copy-values ;
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: declared-class ( value -- class/f )
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next-node get dup #declare? [ declaration>> at ] [ 2drop f ] if ;
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: record-param-allocation ( value class -- )
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dup immutable-tuple-class? [
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[ swap set-value-class ] [
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all-slots [
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[ <slot-value> dup ] [ class>> ] bi*
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record-param-allocation
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] map swap record-allocation
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] 2bi
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] [ drop unknown-allocation ] if ;
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M: #introduce escape-analysis*
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out-d>> [ dup declared-class record-param-allocation ] each ;
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DEFER: record-literal-allocation
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: make-literal-slots ( seq -- values )
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[ <slot-value> [ swap record-literal-allocation ] keep ] map ;
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: object-slots ( object -- slots/f )
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{
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{ [ dup class immutable-tuple-class? ] [ tuple-slots ] }
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[ drop f ]
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} cond ;
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: record-literal-allocation ( value object -- )
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object-slots
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[ make-literal-slots swap record-allocation ]
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[ unknown-allocation ]
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if* ;
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M: #push escape-analysis*
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[ out-d>> first ] [ literal>> ] bi record-literal-allocation ;
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: record-unknown-allocation ( #call -- )
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[ in-d>> add-escaping-values ]
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[ out-d>> unknown-allocations ] bi ;
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: record-tuple-allocation ( #call -- )
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dup immutable-tuple-boa?
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[ [ in-d>> but-last ] [ out-d>> first ] bi record-allocation ]
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[ record-unknown-allocation ]
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if ;
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: slot-offset ( #call -- n/f )
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dup in-d>>
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[ second node-value-info literal>> ]
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[ first node-value-info class>> ] 2bi
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2dup [ fixnum? ] [ tuple class<= ] bi* and [
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over 2 >= [ drop 2 - ] [ 2drop f ] if
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] [ 2drop f ] if ;
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: record-slot-call ( #call -- )
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[ out-d>> first ] [ slot-offset ] [ in-d>> first ] tri over
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[ [ record-slot-access ] [ copy-slot-value ] 3bi ]
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[ [ unknown-allocation ] [ drop ] [ add-escaping-value ] tri* ]
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if ;
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M: #call escape-analysis*
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dup word>> {
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{ \ <tuple-boa> [ record-tuple-allocation ] }
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{ \ slot [ record-slot-call ] }
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[ drop record-unknown-allocation ]
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} case ;
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M: #return escape-analysis*
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in-d>> add-escaping-values ;
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M: #alien-invoke escape-analysis*
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[ in-d>> add-escaping-values ]
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[ out-d>> unknown-allocations ]
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bi ;
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M: #alien-indirect escape-analysis*
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[ in-d>> add-escaping-values ]
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[ out-d>> unknown-allocations ]
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bi ;
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M: #alien-callback escape-analysis* drop ;
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