1 ! Copyright (C) 2010 Slava Pestov.
2 ! See https://factorcode.org/license.txt for BSD license.
3 USING: accessors combinators combinators.short-circuit
4 compiler.cfg.hats compiler.cfg.instructions
5 compiler.cfg.utilities compiler.cfg.value-numbering.graph
6 compiler.cfg.value-numbering.math
7 compiler.cfg.value-numbering.rewrite cpu.architecture kernel
9 IN: compiler.cfg.value-numbering.alien
11 M: ##box-displaced-alien rewrite
12 dup displacement>> vreg>insn zero-insn?
13 [ [ dst>> ] [ base>> ] bi <copy> ] [ drop f ] if ;
15 ! ##box-displaced-alien f 1 2 3 <class>
16 ! ##unbox-c-ptr 4 1 <class>
18 ! ##box-displaced-alien f 1 2 3 <class>
19 ! ##unbox-c-ptr 5 3 <class>
22 : rewrite-unbox-alien ( insn box-insn -- insn )
23 [ dst>> ] [ src>> ] bi* <copy> ;
25 : rewrite-unbox-displaced-alien ( insn box-insn -- insns )
28 [ [ base>> ] [ base-class>> ] [ displacement>> ] tri ] bi*
33 : rewrite-unbox-any-c-ptr ( insn -- insn/f )
36 { [ dup ##box-alien? ] [ rewrite-unbox-alien ] }
37 { [ dup ##box-displaced-alien? ] [ rewrite-unbox-displaced-alien ] }
41 M: ##unbox-any-c-ptr rewrite rewrite-unbox-any-c-ptr ;
43 M: ##unbox-alien rewrite rewrite-unbox-any-c-ptr ;
45 ! Fuse ##add-imm into ##load-memory(-imm) and ##store-memory(-imm)
46 ! just update the offset in the instruction
47 : fuse-base-offset? ( insn -- ? )
48 base>> vreg>insn ##add-imm? ;
50 : fuse-base-offset ( insn -- insn' )
52 [ src1>> ] [ src2>> ] bi
53 [ >>base ] [ '[ _ + ] change-offset ] bi* ;
55 ! Fuse ##add-imm into ##load-memory and ##store-memory
56 ! just update the offset in the instruction
57 : fuse-displacement-offset? ( insn -- ? )
58 { [ scale>> 0 = ] [ displacement>> vreg>insn ##add-imm? ] } 1&& ;
60 : fuse-displacement-offset ( insn -- insn' )
61 dup displacement>> vreg>insn
62 [ src1>> ] [ src2>> ] bi
63 [ >>displacement ] [ '[ _ + ] change-offset ] bi* ;
65 ! Fuse ##add into ##load-memory-imm and ##store-memory-imm
66 ! construct a new ##load-memory or ##store-memory with the
67 ! ##add's operand as the displacement
68 : fuse-displacement? ( insn -- ? )
70 [ offset>> 0 = complex-addressing? or ]
71 [ base>> vreg>insn ##add? ]
74 GENERIC: alien-insn-value ( insn -- value )
76 M: ##load-memory-imm alien-insn-value dst>> ;
77 M: ##store-memory-imm alien-insn-value src>> ;
79 GENERIC: new-alien-insn ( value base displacement scale offset rep c-type insn -- insn )
81 M: ##load-memory-imm new-alien-insn drop ##load-memory new-insn ;
82 M: ##store-memory-imm new-alien-insn drop ##store-memory new-insn ;
84 : fuse-displacement ( insn -- insn' )
87 [ base>> vreg>insn [ src1>> ] [ src2>> ] bi ]
93 } cleave new-alien-insn ;
95 ! Fuse ##shl-imm into ##load-memory or ##store-memory
96 : scale-insn? ( insn -- ? )
97 { [ ##shl-imm? ] [ src2>> { 1 2 3 } member? ] } 1&& ;
99 : fuse-scale? ( insn -- ? )
100 { [ scale>> 0 = ] [ displacement>> vreg>insn scale-insn? ] } 1&& ;
102 : fuse-scale ( insn -- insn' )
103 dup displacement>> vreg>insn
104 [ src1>> ] [ src2>> ] bi
105 [ >>displacement ] [ >>scale ] bi* ;
107 : rewrite-memory-op ( insn -- insn/f )
108 complex-addressing? [
110 { [ dup fuse-base-offset? ] [ fuse-base-offset ] }
111 { [ dup fuse-displacement-offset? ] [ fuse-displacement-offset ] }
112 { [ dup fuse-scale? ] [ fuse-scale ] }
117 : rewrite-memory-imm-op ( insn -- insn/f )
119 { [ dup fuse-base-offset? ] [ fuse-base-offset ] }
120 { [ dup fuse-displacement? ] [ fuse-displacement ] }
124 M: ##load-memory rewrite rewrite-memory-op ;
125 M: ##load-memory-imm rewrite rewrite-memory-imm-op ;
126 M: ##store-memory rewrite rewrite-memory-op ;
127 M: ##store-memory-imm rewrite rewrite-memory-imm-op ;