1 ! Copyright (C) 2010 Slava Pestov.
2 ! See http://factorcode.org/license.txt for BSD license.
3 USING: accessors combinators combinators.short-circuit fry
4 kernel make math sequences
9 compiler.cfg.instructions
11 compiler.cfg.gvn.graph
12 compiler.cfg.gvn.avail
13 compiler.cfg.gvn.rewrite ;
14 IN: compiler.cfg.gvn.alien
16 M: ##box-displaced-alien rewrite
17 dup displacement>> vreg>insn zero-insn?
18 [ [ dst>> ] [ base>> ] bi <copy> ] [ drop f ] if ;
20 ! ##box-displaced-alien f 1 2 3 <class>
21 ! ##unbox-c-ptr 4 1 <class>
23 ! ##box-displaced-alien f 1 2 3 <class>
24 ! ##unbox-c-ptr 5 3 <class>
27 : rewrite-unbox-alien ( insn box-insn -- insn )
28 [ dst>> ] [ src>> ] bi* <copy> ;
30 : rewrite-unbox-displaced-alien ( insn box-insn -- insns )
33 [ [ base>> ] [ base-class>> ] [ displacement>> ] tri ] bi*
38 : rewrite-unbox-any-c-ptr ( insn -- insn/f )
42 [ dup [ ##box-alien? ] with-available-uses? ]
43 [ rewrite-unbox-alien ]
46 [ dup [ ##box-displaced-alien? ] with-available-uses? ]
47 [ rewrite-unbox-displaced-alien ]
52 M: ##unbox-any-c-ptr rewrite rewrite-unbox-any-c-ptr ;
54 M: ##unbox-alien rewrite rewrite-unbox-any-c-ptr ;
56 ! Fuse ##add-imm into ##load-memory(-imm) and ##store-memory(-imm)
57 ! just update the offset in the instruction
58 : fuse-base-offset? ( insn -- ? )
59 base>> vreg>insn [ ##add-imm? ] with-available-uses? ;
61 : fuse-base-offset ( insn -- insn' )
62 clone dup base>> vreg>insn
63 [ src1>> ] [ src2>> ] bi
64 [ >>base ] [ '[ _ + ] change-offset ] bi* ;
66 ! Fuse ##add-imm into ##load-memory and ##store-memory
67 ! just update the offset in the instruction
68 : fuse-displacement-offset? ( insn -- ? )
71 [ displacement>> vreg>insn [ ##add-imm? ] with-available-uses? ]
74 : fuse-displacement-offset ( insn -- insn' )
75 clone dup displacement>> vreg>insn
76 [ src1>> ] [ src2>> ] bi
77 [ >>displacement ] [ '[ _ + ] change-offset ] bi* ;
79 ! Fuse ##add into ##load-memory-imm and ##store-memory-imm
80 ! construct a new ##load-memory or ##store-memory with the
81 ! ##add's operand as the displacement
82 : fuse-displacement? ( insn -- ? )
84 [ offset>> 0 = complex-addressing? or ]
85 [ base>> vreg>insn [ ##add? ] with-available-uses? ]
88 GENERIC: alien-insn-value ( insn -- value )
90 M: ##load-memory-imm alien-insn-value dst>> ;
91 M: ##store-memory-imm alien-insn-value src>> ;
93 GENERIC: new-alien-insn ( value base displacement scale offset rep c-type insn -- insn )
95 M: ##load-memory-imm new-alien-insn drop \ ##load-memory new-insn ;
96 M: ##store-memory-imm new-alien-insn drop \ ##store-memory new-insn ;
98 : fuse-displacement ( insn -- insn' )
101 [ base>> vreg>insn [ src1>> ] [ src2>> ] bi ]
107 } cleave new-alien-insn ;
109 ! Fuse ##shl-imm into ##load-memory or ##store-memory
110 : scale-insn? ( insn -- ? )
111 { [ ##shl-imm? ] [ src2>> { 1 2 3 } member? ] } 1&& ;
113 : fuse-scale? ( insn -- ? )
116 [ displacement>> vreg>insn [ scale-insn? ] with-available-uses? ]
119 : fuse-scale ( insn -- insn' )
120 clone dup displacement>> vreg>insn
121 [ src1>> ] [ src2>> ] bi
122 [ >>displacement ] [ >>scale ] bi* ;
124 : rewrite-memory-op ( insn -- insn/f )
125 complex-addressing? [
127 { [ dup fuse-base-offset? ] [ fuse-base-offset ] }
128 { [ dup fuse-displacement-offset? ] [ fuse-displacement-offset ] }
129 { [ dup fuse-scale? ] [ fuse-scale ] }
134 : rewrite-memory-imm-op ( insn -- insn/f )
136 { [ dup fuse-base-offset? ] [ fuse-base-offset ] }
137 { [ dup fuse-displacement? ] [ fuse-displacement ] }
141 M: ##load-memory rewrite rewrite-memory-op ;
142 M: ##load-memory-imm rewrite rewrite-memory-imm-op ;
143 M: ##store-memory rewrite rewrite-memory-op ;
144 M: ##store-memory-imm rewrite rewrite-memory-imm-op ;