1 ! Copyright (C) 2010 Slava Pestov, 2011 Alex Vondrak
2 ! See http://factorcode.org/license.txt for BSD license.
3 USING: accessors combinators combinators.short-circuit fry
4 kernel make math namespaces 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 ! XXX next-vreg makes vregs>vns change on every iteration
31 ! (hidden in ^^unbox-c-ptr)
32 : rewrite-unbox-displaced-alien ( insn box-insn -- insns )
35 [ [ base>> ] [ base-class>> ] [ displacement>> ] tri ] bi*
40 : rewrite-unbox-any-c-ptr ( insn -- insn/f )
44 [ dup [ ##box-alien? ] with-available-uses? ]
45 [ rewrite-unbox-alien ]
48 ! [ dup [ ##box-displaced-alien? ] with-available-uses? ]
50 final-iteration? get [
51 dup [ ##box-displaced-alien? ] with-available-uses?
54 [ rewrite-unbox-displaced-alien ]
59 M: ##unbox-any-c-ptr rewrite rewrite-unbox-any-c-ptr ;
61 M: ##unbox-alien rewrite rewrite-unbox-any-c-ptr ;
63 ! Fuse ##add-imm into ##load-memory(-imm) and ##store-memory(-imm)
64 ! just update the offset in the instruction
65 : fuse-base-offset? ( insn -- ? )
66 base>> vreg>insn [ ##add-imm? ] with-available-uses? ;
68 : fuse-base-offset ( insn -- insn' )
69 clone dup base>> vreg>insn
70 [ src1>> ] [ src2>> ] bi
71 [ >>base ] [ '[ _ + ] change-offset ] bi* ;
73 ! Fuse ##add-imm into ##load-memory and ##store-memory
74 ! just update the offset in the instruction
75 : fuse-displacement-offset? ( insn -- ? )
78 [ displacement>> vreg>insn [ ##add-imm? ] with-available-uses? ]
81 : fuse-displacement-offset ( insn -- insn' )
82 clone dup displacement>> vreg>insn
83 [ src1>> ] [ src2>> ] bi
84 [ >>displacement ] [ '[ _ + ] change-offset ] bi* ;
86 ! Fuse ##add into ##load-memory-imm and ##store-memory-imm
87 ! construct a new ##load-memory or ##store-memory with the
88 ! ##add's operand as the displacement
89 : fuse-displacement? ( insn -- ? )
91 [ offset>> 0 = complex-addressing? or ]
92 [ base>> vreg>insn [ ##add? ] with-available-uses? ]
95 GENERIC: alien-insn-value ( insn -- value )
97 M: ##load-memory-imm alien-insn-value dst>> ;
98 M: ##store-memory-imm alien-insn-value src>> ;
100 GENERIC: new-alien-insn ( value base displacement scale offset rep c-type insn -- insn )
102 M: ##load-memory-imm new-alien-insn drop \ ##load-memory new-insn ;
103 M: ##store-memory-imm new-alien-insn drop \ ##store-memory new-insn ;
105 : fuse-displacement ( insn -- insn' )
108 [ base>> vreg>insn [ src1>> ] [ src2>> ] bi ]
114 } cleave new-alien-insn ;
116 ! Fuse ##shl-imm into ##load-memory or ##store-memory
117 : scale-insn? ( insn -- ? )
118 { [ ##shl-imm? ] [ src2>> { 1 2 3 } member? ] } 1&& ;
120 : fuse-scale? ( insn -- ? )
123 [ displacement>> vreg>insn [ scale-insn? ] with-available-uses? ]
126 : fuse-scale ( insn -- insn' )
127 clone dup displacement>> vreg>insn
128 [ src1>> ] [ src2>> ] bi
129 [ >>displacement ] [ >>scale ] bi* ;
131 : rewrite-memory-op ( insn -- insn/f )
132 complex-addressing? [
134 { [ dup fuse-base-offset? ] [ fuse-base-offset ] }
135 { [ dup fuse-displacement-offset? ] [ fuse-displacement-offset ] }
136 { [ dup fuse-scale? ] [ fuse-scale ] }
141 : rewrite-memory-imm-op ( insn -- insn/f )
143 { [ dup fuse-base-offset? ] [ fuse-base-offset ] }
144 { [ dup fuse-displacement? ] [ fuse-displacement ] }
148 M: ##load-memory rewrite rewrite-memory-op ;
149 M: ##load-memory-imm rewrite rewrite-memory-imm-op ;
150 M: ##store-memory rewrite rewrite-memory-op ;
151 M: ##store-memory-imm rewrite rewrite-memory-imm-op ;