137 lines
3.9 KiB
Factor
Executable File
137 lines
3.9 KiB
Factor
Executable File
! Copyright (C) 2008 Slava Pestov.
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! See http://factorcode.org/license.txt for BSD license.
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USING: namespaces assocs accessors kernel combinators
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classes.algebra sequences slots.private fry vectors
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classes.tuple.private math math.private arrays
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stack-checker.branches
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compiler.utilities
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compiler.tree
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compiler.tree.combinators
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compiler.tree.propagation.info
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compiler.tree.escape-analysis.simple
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compiler.tree.escape-analysis.allocations ;
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IN: compiler.tree.tuple-unboxing
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! This pass must run after escape analysis
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GENERIC: unbox-tuples* ( node -- node/nodes )
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: unbox-output? ( node -- values )
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out-d>> first unboxed-allocation ;
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: (expand-#push) ( object value -- nodes )
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dup unboxed-allocation dup [
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[ object-slots ] [ drop ] [ ] tri*
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[ (expand-#push) ] 2map-flat
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] [
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drop #push
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] if ;
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: expand-#push ( #push -- nodes )
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[ literal>> ] [ out-d>> first ] bi (expand-#push) ;
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M: #push unbox-tuples* ( #push -- nodes )
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dup unbox-output? [ expand-#push ] when ;
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: unbox-<tuple-boa> ( #call -- nodes )
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dup unbox-output? [ in-d>> 1 tail* #drop ] when ;
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: (flatten-values) ( values accum -- )
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dup '[
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dup unboxed-allocation
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[ _ (flatten-values) ] [ _ push ] ?if
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] each ;
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: flatten-values ( values -- values' )
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dup empty? [
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10 <vector> [ (flatten-values) ] keep
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] unless ;
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: prepare-slot-access ( #call -- tuple-values outputs slot-values )
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[ in-d>> flatten-values ]
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[ out-d>> flatten-values ]
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[
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out-d>> first slot-accesses get at
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[ slot#>> ] [ value>> ] bi allocation nth
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1array flatten-values
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] tri ;
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: slot-access-shuffle ( tuple-values outputs slot-values -- #shuffle )
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[ drop ] [ zip ] 2bi #data-shuffle ;
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: unbox-slot-access ( #call -- nodes )
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dup out-d>> first unboxed-slot-access? [
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prepare-slot-access slot-access-shuffle
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] when ;
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M: #call unbox-tuples*
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dup word>> {
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{ \ <tuple-boa> [ unbox-<tuple-boa> ] }
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{ \ slot [ unbox-slot-access ] }
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[ drop ]
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} case ;
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M: #declare unbox-tuples*
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#! We don't look at declarations after propagation anyway.
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f >>declaration ;
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M: #copy unbox-tuples*
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[ flatten-values ] change-in-d
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[ flatten-values ] change-out-d ;
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M: #shuffle unbox-tuples*
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[ flatten-values ] change-in-d
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[ flatten-values ] change-out-d
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[ flatten-values ] change-in-r
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[ flatten-values ] change-out-r
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[ unzip [ flatten-values ] bi@ zip ] change-mapping ;
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M: #terminate unbox-tuples*
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[ flatten-values ] change-in-d
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[ flatten-values ] change-in-r ;
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M: #phi unbox-tuples*
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! pad-with-bottom is only needed if some branches are terminated,
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! which means all output values are bottom
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[ [ flatten-values ] map pad-with-bottom ] change-phi-in-d
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[ flatten-values ] change-out-d ;
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M: #recursive unbox-tuples*
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[ label>> [ flatten-values ] change-enter-out drop ]
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[ [ flatten-values ] change-in-d ]
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bi ;
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M: #enter-recursive unbox-tuples*
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[ flatten-values ] change-in-d
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[ flatten-values ] change-out-d ;
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M: #call-recursive unbox-tuples*
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[ flatten-values ] change-in-d
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[ flatten-values ] change-out-d ;
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M: #return-recursive unbox-tuples*
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[ flatten-values ] change-in-d
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[ flatten-values ] change-out-d ;
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! These nodes never participate in unboxing
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: assert-not-unboxed ( values -- )
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dup array?
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[ [ unboxed-allocation ] any? ] [ unboxed-allocation ] if
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[ "Unboxing wrong value" throw ] when ;
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M: #branch unbox-tuples* dup in-d>> assert-not-unboxed ;
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M: #return unbox-tuples* dup in-d>> assert-not-unboxed ;
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M: #introduce unbox-tuples* dup out-d>> assert-not-unboxed ;
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M: #alien-invoke unbox-tuples* dup in-d>> assert-not-unboxed ;
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M: #alien-indirect unbox-tuples* dup in-d>> assert-not-unboxed ;
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M: #alien-callback unbox-tuples* ;
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: unbox-tuples ( nodes -- nodes )
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allocations get escaping-allocations get assoc-diff assoc-empty?
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[ [ unbox-tuples* ] map-nodes ] unless ;
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