1 ! Copyright (C) 2008, 2010 Slava Pestov.
2 ! See https://factorcode.org/license.txt for BSD license.
3 USING: accessors arrays assocs classes classes.tuple
4 classes.tuple.private combinators compiler.tree
5 compiler.tree.escape-analysis.allocations
6 compiler.tree.escape-analysis.nodes
7 compiler.tree.propagation.info kernel math namespaces sequences
9 IN: compiler.tree.escape-analysis.simple
11 M: #declare escape-analysis* drop ;
13 M: #terminate escape-analysis* drop ;
15 M: #renaming escape-analysis* inputs/outputs copy-values ;
17 : declared-class ( value -- class/f )
18 next-node get dup #declare? [ declaration>> at ] [ 2drop f ] if ;
20 : record-param-allocation ( value class -- )
21 dup immutable-tuple-class? [
22 [ swap set-value-class ] [
24 [ <slot-value> dup ] [ class>> ] bi*
25 record-param-allocation
26 ] map swap record-allocation
28 ] [ drop unknown-allocation ] if ;
30 M: #introduce escape-analysis*
31 out-d>> [ dup declared-class record-param-allocation ] each ;
33 DEFER: record-literal-allocation
35 : make-literal-slots ( seq -- values )
36 [ <slot-value> [ swap record-literal-allocation ] keep ] map ;
38 : object-slots ( object -- slots/f )
40 { [ dup class-of immutable-tuple-class? ] [ tuple-slots ] }
44 : record-literal-allocation ( value object -- )
46 [ make-literal-slots swap record-allocation ]
47 [ unknown-allocation ]
50 M: #push escape-analysis*
51 dup literal>> layout-up-to-date?
52 [ [ out-d>> first ] [ literal>> ] bi record-literal-allocation ]
53 [ out-d>> unknown-allocations ]
56 : record-unknown-allocation ( #call -- )
57 [ in-d>> add-escaping-values ]
58 [ out-d>> unknown-allocations ] bi ;
60 : record-tuple-allocation ( #call -- )
61 dup immutable-tuple-boa?
62 [ [ in-d>> but-last { } like ] [ out-d>> first ] bi record-allocation ]
63 [ record-unknown-allocation ]
66 : slot-offset ( #call -- n/f )
67 dup in-d>> second node-value-info literal>> dup [ 2 - ] when ;
69 : valid-slot-offset? ( slot# in -- ? )
72 dup array? [ bounds-check? ] [ 2drop f ] if
76 : unknown-slot-call ( out slot# in -- )
77 [ unknown-allocation ] [ drop ] [ add-escaping-value ] tri* ;
79 : record-slot-call ( #call -- )
80 [ out-d>> first ] [ slot-offset ] [ in-d>> first ] tri
81 2dup valid-slot-offset?
82 [ [ record-slot-access ] [ copy-slot-value ] 3bi ]
86 M: #call escape-analysis*
88 { \ <tuple-boa> [ record-tuple-allocation ] }
89 { \ slot [ record-slot-call ] }
90 [ drop record-unknown-allocation ]
93 M: #return escape-analysis*
94 in-d>> add-escaping-values ;
96 M: #alien-node escape-analysis*
97 [ in-d>> add-escaping-values ]
98 [ out-d>> unknown-allocations ]
101 M: #alien-callback escape-analysis*
102 child>> (escape-analysis) ;