factor/unfinished/compiler/tree/escape-analysis/simple/simple.factor

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2008-08-02 00:31:43 -04:00
! Copyright (C) 2008 Slava Pestov.
! See http://factorcode.org/license.txt for BSD license.
USING: kernel accessors sequences classes.tuple
classes.tuple.private math math.private slots.private
combinators dequeues search-dequeues namespaces fry
compiler.tree
compiler.tree.propagation.info
compiler.tree.escape-analysis.nodes
compiler.tree.escape-analysis.allocations ;
IN: compiler.tree.escape-analysis.simple
: record-tuple-allocation ( #call -- )
#! Delegation.
dup dup in-d>> peek node-value-info literal>>
class>> all-slots rest-slice [ read-only>> ] all? [
[ in-d>> but-last ] [ out-d>> first ] bi
record-allocation
] [ drop ] if ;
: record-slot-call ( #call -- )
[ out-d>> first ]
[ dup in-d>> second node-value-info literal>> ]
[ in-d>> first ] tri
over fixnum? [ [ 3 - ] dip record-slot-access ] [ 3drop ] if ;
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: add-escaping-values ( values -- )
[ allocation [ disqualify ] each ] each ;
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M: #call escape-analysis*
dup word>> {
{ \ <tuple-boa> [ record-tuple-allocation ] }
{ \ slot [ record-slot-call ] }
[ drop in-d>> add-escaping-values ]
} case ;
M: #return escape-analysis*
in-d>> add-escaping-values ;