More escape analysis work
Slava Pestov
parent
d14efabed3
commit
d41bc716bf
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@ -8,11 +8,9 @@ IN: compiler.tree.dataflow-analysis
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! Dataflow analysis
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SYMBOL: work-list
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: look-at-value ( values -- )
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work-list get push-front ;
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: look-at-value ( values -- ) work-list get push-front ;
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: look-at-values ( values -- )
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work-list get '[ , push-front ] each ;
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: look-at-values ( values -- ) work-list get push-all-front ;
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: look-at-inputs ( node -- ) in-d>> look-at-values ;
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@ -1,7 +1,8 @@
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! Copyright (C) 2008 Slava Pestov.
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! See http://factorcode.org/license.txt for BSD license.
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USING: assocs namespaces sequences kernel math combinators sets
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stack-checker.state compiler.tree.copy-equiv ;
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fry stack-checker.state compiler.tree.copy-equiv
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compiler.tree.escape-analysis.graph ;
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IN: compiler.tree.escape-analysis.allocations
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SYMBOL: escaping
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@ -25,24 +26,33 @@ SYMBOL: allocations
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: record-slot-access ( out slot# in -- )
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over zero? [ 3drop ] [ allocation ?nth swap is-copy-of ] if ;
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! A map from values to sequences of values
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SYMBOL: slot-merging
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! We track available values
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SYMBOL: slot-graph
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: merge-slots ( values -- value )
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dup [ ] contains? [
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<value>
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[ introduce-value ]
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[ slot-merging get set-at ]
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[ slot-graph get add-edges ]
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[ ] tri
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] [ drop f ] if ;
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! If an allocation's slot appears in this set, the allocation
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! is disqualified from unboxing.
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SYMBOL: disqualified
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! A disqualified slot value is not available for unboxing. A
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! tuple may be unboxed if none of its slots have been
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! disqualified.
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: disqualify ( slot-value -- )
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[ disqualified get conjoin ]
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[ slot-merging get at [ disqualify ] each ] bi ;
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slot-graph get mark-vertex ;
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SYMBOL: escaping-allocations
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: compute-escaping-allocations ( -- )
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#! Any allocations involving unavailable slots are
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#! potentially escaping, and cannot be unboxed.
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allocations get
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slot-graph get marked-components
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'[ [ , key? ] contains? nip ] assoc-filter
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escaping-allocations set ;
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: escaping-allocation? ( value -- ? )
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allocation [ [ disqualified get key? ] contains? ] [ t ] if* ;
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escaping-allocations get key? ;
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@ -5,7 +5,7 @@ compiler.tree.normalization compiler.tree.copy-equiv
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compiler.tree.propagation compiler.tree.cleanup
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compiler.tree.combinators compiler.tree sequences math
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kernel tools.test accessors slots.private quotations.private
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prettyprint ;
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prettyprint classes.tuple.private ;
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\ escape-analysis must-infer
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@ -19,9 +19,9 @@ prettyprint ;
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0 swap [
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dup #call?
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[
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out-d>> dup empty? [ drop ] [
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first escaping-allocation? [ 1+ ] unless
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] if
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dup word>> \ <tuple-boa> = [
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out-d>> first escaping-allocation? [ 1+ ] unless
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] [ drop ] if
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] [ drop ] if
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] each-node ;
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@ -3,17 +3,16 @@
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USING: kernel namespaces search-dequeues
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compiler.tree
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compiler.tree.def-use
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compiler.tree.escape-analysis.graph
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compiler.tree.escape-analysis.allocations
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compiler.tree.escape-analysis.recursive
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compiler.tree.escape-analysis.branches
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compiler.tree.escape-analysis.nodes
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compiler.tree.escape-analysis.simple
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compiler.tree.escape-analysis.work-list ;
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compiler.tree.escape-analysis.simple ;
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IN: compiler.tree.escape-analysis
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: escape-analysis ( node -- node )
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H{ } clone slot-merging set
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H{ } clone allocations set
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H{ } clone disqualified set
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<hashed-dlist> work-list set
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dup (escape-analysis) ;
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<graph> slot-graph set
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dup (escape-analysis)
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compute-escaping-allocations ;
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@ -0,0 +1,19 @@
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IN: compiler.tree.escape-analysis.graph.tests
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USING: compiler.tree.escape-analysis.graph tools.test namespaces
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accessors ;
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<graph> "graph" set
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[ ] [ { 2 3 4 } 1 "graph" get add-edges ] unit-test
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[ ] [ { 5 6 } 2 "graph" get add-edges ] unit-test
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[ ] [ { 7 8 } 9 "graph" get add-edges ] unit-test
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[ ] [ { 6 10 } 4 "graph" get add-edges ] unit-test
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[ ] [ 3 "graph" get mark-vertex ] unit-test
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[ H{ { 1 1 } { 2 2 } { 3 3 } { 4 4 } { 5 5 } { 6 6 } { 10 10 } } ]
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[ "graph" get marked>> ] unit-test
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[ ] [ { 1 11 } 12 "graph" get add-edges ] unit-test
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[ t ] [ 11 "graph" get marked-vertex? ] unit-test
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@ -0,0 +1,38 @@
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! Copyright (C) 2008 Slava Pestov.
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! See http://factorcode.org/license.txt for BSD license.
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USING: kernel accessors assocs fry sequences sets
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dequeues search-dequeues namespaces ;
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IN: compiler.tree.escape-analysis.graph
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TUPLE: graph edges work-list ;
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: <graph> ( -- graph )
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H{ } clone <hashed-dlist> graph boa ;
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: mark-vertex ( vertex graph -- ) work-list>> push-front ;
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: add-edge ( out in graph -- )
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[ edges>> push-at ] [ swapd edges>> push-at ] 3bi ;
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: add-edges ( out-seq in graph -- )
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'[ , , add-edge ] each ;
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<PRIVATE
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SYMBOL: marked
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: (mark-vertex) ( vertex graph -- )
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over marked get key? [ 2drop ] [
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[ drop marked get conjoin ]
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[ [ edges>> at ] [ work-list>> ] bi push-all-front ]
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2bi
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] if ;
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PRIVATE>
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: marked-components ( graph -- vertices )
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#! All vertices in connected components of marked vertices.
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H{ } clone marked [
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[ work-list>> ] keep
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'[ , (mark-vertex) ] slurp-dequeue
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] with-variable ;
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@ -6,7 +6,6 @@ combinators dequeues search-dequeues namespaces fry
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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.work-list
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compiler.tree.escape-analysis.allocations ;
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IN: compiler.tree.escape-analysis.simple
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@ -1,9 +0,0 @@
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! Copyright (C) 2008 Slava Pestov.
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! See http://factorcode.org/license.txt for BSD license.
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USING: dequeues namespaces sequences fry ;
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IN: compiler.tree.escape-analysis.work-list
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SYMBOL: work-list
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: add-escaping-values ( values -- )
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work-list get '[ , push-front ] each ;
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