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
4 compiler.cfg.gvn.avail compiler.cfg.gvn.graph
5 compiler.cfg.gvn.math compiler.cfg.gvn.rewrite compiler.cfg.hats
6 compiler.cfg.instructions compiler.cfg.utilities
7 cpu.architecture kernel make math namespaces sequences ;
8 IN: compiler.cfg.gvn.alien
10 M: ##box-displaced-alien rewrite
11 dup displacement>> vreg>insn zero-insn?
12 [ [ dst>> ] [ base>> ] bi <copy> ] [ drop f ] if ;
14 ! ##box-displaced-alien f 1 2 3 <class>
15 ! ##unbox-c-ptr 4 1 <class>
17 ! ##box-displaced-alien f 1 2 3 <class>
18 ! ##unbox-c-ptr 5 3 <class>
21 : rewrite-unbox-alien ( insn box-insn -- insn )
22 [ dst>> ] [ src>> ] bi* <copy> ;
24 ! XXX next-vreg makes vregs>vns change on every iteration
25 ! (hidden in ^^unbox-c-ptr)
26 : rewrite-unbox-displaced-alien ( insn box-insn -- insns )
29 [ [ base>> ] [ base-class>> ] [ displacement>> ] tri ] bi*
34 : rewrite-unbox-any-c-ptr ( insn -- insn/f )
38 [ dup [ ##box-alien? ] with-available-uses? ]
39 [ rewrite-unbox-alien ]
42 ! [ dup [ ##box-displaced-alien? ] with-available-uses? ]
44 final-iteration? get [
45 dup [ ##box-displaced-alien? ] with-available-uses?
48 [ rewrite-unbox-displaced-alien ]
53 M: ##unbox-any-c-ptr rewrite rewrite-unbox-any-c-ptr ;
55 M: ##unbox-alien rewrite rewrite-unbox-any-c-ptr ;
57 ! Fuse ##add-imm into ##load-memory(-imm) and ##store-memory(-imm)
58 ! just update the offset in the instruction
59 : fuse-base-offset? ( insn -- ? )
60 base>> vreg>insn [ ##add-imm? ] with-available-uses? ;
62 : fuse-base-offset ( insn -- insn' )
63 clone dup base>> vreg>insn
64 [ src1>> ] [ src2>> ] bi
65 [ >>base ] [ '[ _ + ] change-offset ] bi* ;
67 ! Fuse ##add-imm into ##load-memory and ##store-memory
68 ! just update the offset in the instruction
69 : fuse-displacement-offset? ( insn -- ? )
72 [ displacement>> vreg>insn [ ##add-imm? ] with-available-uses? ]
75 : fuse-displacement-offset ( insn -- insn' )
76 clone dup displacement>> vreg>insn
77 [ src1>> ] [ src2>> ] bi
78 [ >>displacement ] [ '[ _ + ] change-offset ] bi* ;
80 ! Fuse ##add into ##load-memory-imm and ##store-memory-imm
81 ! construct a new ##load-memory or ##store-memory with the
82 ! ##add's operand as the displacement
83 : fuse-displacement? ( insn -- ? )
85 [ offset>> 0 = complex-addressing? or ]
86 [ base>> vreg>insn [ ##add? ] with-available-uses? ]
89 GENERIC: alien-insn-value ( insn -- value )
91 M: ##load-memory-imm alien-insn-value dst>> ;
92 M: ##store-memory-imm alien-insn-value src>> ;
94 GENERIC: new-alien-insn ( value base displacement scale offset rep c-type insn -- insn )
96 M: ##load-memory-imm new-alien-insn drop ##load-memory new-insn ;
97 M: ##store-memory-imm new-alien-insn drop ##store-memory new-insn ;
99 : fuse-displacement ( insn -- insn' )
102 [ base>> vreg>insn [ src1>> ] [ src2>> ] bi ]
108 } cleave new-alien-insn ;
110 ! Fuse ##shl-imm into ##load-memory or ##store-memory
111 : scale-insn? ( insn -- ? )
112 { [ ##shl-imm? ] [ src2>> { 1 2 3 } member? ] } 1&& ;
114 : fuse-scale? ( insn -- ? )
117 [ displacement>> vreg>insn [ scale-insn? ] with-available-uses? ]
120 : fuse-scale ( insn -- insn' )
121 clone dup displacement>> vreg>insn
122 [ src1>> ] [ src2>> ] bi
123 [ >>displacement ] [ >>scale ] bi* ;
125 : rewrite-memory-op ( insn -- insn/f )
126 complex-addressing? [
128 { [ dup fuse-base-offset? ] [ fuse-base-offset ] }
129 { [ dup fuse-displacement-offset? ] [ fuse-displacement-offset ] }
130 { [ dup fuse-scale? ] [ fuse-scale ] }
135 : rewrite-memory-imm-op ( insn -- insn/f )
137 { [ dup fuse-base-offset? ] [ fuse-base-offset ] }
138 { [ dup fuse-displacement? ] [ fuse-displacement ] }
142 M: ##load-memory rewrite rewrite-memory-op ;
143 M: ##load-memory-imm rewrite rewrite-memory-imm-op ;
144 M: ##store-memory rewrite rewrite-memory-op ;
145 M: ##store-memory-imm rewrite rewrite-memory-imm-op ;