1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
|
(* alphaProps.sml
*
* COPYRIGHT (c) 1996 Bell Laboratories.
*
*)
functor AlphaProps
(structure Instr : ALPHAINSTR
structure MLTreeHash : MLTREE_HASH (* where T = Instr.T *)
where type T.Basis.cond = Instr.T.Basis.cond
and type T.Basis.div_rounding_mode = Instr.T.Basis.div_rounding_mode
and type T.Basis.ext = Instr.T.Basis.ext
and type T.Basis.fcond = Instr.T.Basis.fcond
and type T.Basis.rounding_mode = Instr.T.Basis.rounding_mode
and type T.Constant.const = Instr.T.Constant.const
and type ('s,'r,'f,'c) T.Extension.ccx = ('s,'r,'f,'c) Instr.T.Extension.ccx
and type ('s,'r,'f,'c) T.Extension.fx = ('s,'r,'f,'c) Instr.T.Extension.fx
and type ('s,'r,'f,'c) T.Extension.rx = ('s,'r,'f,'c) Instr.T.Extension.rx
and type ('s,'r,'f,'c) T.Extension.sx = ('s,'r,'f,'c) Instr.T.Extension.sx
and type T.I.div_rounding_mode = Instr.T.I.div_rounding_mode
and type T.Region.region = Instr.T.Region.region
and type T.ccexp = Instr.T.ccexp
and type T.fexp = Instr.T.fexp
(* and type T.labexp = Instr.T.labexp *)
and type T.mlrisc = Instr.T.mlrisc
and type T.oper = Instr.T.oper
and type T.rep = Instr.T.rep
and type T.rexp = Instr.T.rexp
and type T.stm = Instr.T.stm
structure MLTreeEval : MLTREE_EVAL (* where T = Instr.T *)
where type T.Basis.cond = Instr.T.Basis.cond
and type T.Basis.div_rounding_mode = Instr.T.Basis.div_rounding_mode
and type T.Basis.ext = Instr.T.Basis.ext
and type T.Basis.fcond = Instr.T.Basis.fcond
and type T.Basis.rounding_mode = Instr.T.Basis.rounding_mode
and type T.Constant.const = Instr.T.Constant.const
and type ('s,'r,'f,'c) T.Extension.ccx = ('s,'r,'f,'c) Instr.T.Extension.ccx
and type ('s,'r,'f,'c) T.Extension.fx = ('s,'r,'f,'c) Instr.T.Extension.fx
and type ('s,'r,'f,'c) T.Extension.rx = ('s,'r,'f,'c) Instr.T.Extension.rx
and type ('s,'r,'f,'c) T.Extension.sx = ('s,'r,'f,'c) Instr.T.Extension.sx
and type T.I.div_rounding_mode = Instr.T.I.div_rounding_mode
and type T.Region.region = Instr.T.Region.region
and type T.ccexp = Instr.T.ccexp
and type T.fexp = Instr.T.fexp
(* and type T.labexp = Instr.T.labexp *)
and type T.mlrisc = Instr.T.mlrisc
and type T.oper = Instr.T.oper
and type T.rep = Instr.T.rep
and type T.rexp = Instr.T.rexp
and type T.stm = Instr.T.stm
):INSN_PROPERTIES =
struct
structure I = Instr
structure C = I.C
structure CB = CellsBasis
exception NegateConditional
fun error msg = MLRiscErrorMsg.impossible ("alphaProps."^msg)
val zeroR = Option.valOf(C.zeroReg CB.GP)
datatype kind = IK_JUMP | IK_NOP | IK_INSTR | IK_COPY | IK_CALL
| IK_CALL_WITH_CUTS | IK_PHI | IK_SOURCE | IK_SINK
datatype target = LABELLED of Label.label | FALLTHROUGH | ESCAPES
(*========================================================================
* Instruction Kinds
*========================================================================*)
fun instrKind(I.ANNOTATION{i, ...}) = instrKind i
| instrKind(I.COPY _) = IK_COPY
| instrKind(I.INSTR instr) =
(case instr
of (I.BRANCH _) => IK_JUMP
| (I.FBRANCH _) => IK_JUMP
| (I.JMPL _) => IK_JUMP
| (I.JSR{cutsTo=[],...}) => IK_CALL
| (I.JSR _) => IK_CALL_WITH_CUTS
| (I.BSR{cutsTo=[],...}) => IK_CALL
| (I.BSR _) => IK_CALL_WITH_CUTS
| (I.RET _) => IK_JUMP
| (I.PHI _) => IK_PHI
| (I.SOURCE _) => IK_SOURCE
| (I.SINK _) => IK_SINK
| _ => IK_INSTR
(*esac*))
| instrKind _ = IK_INSTR
fun moveInstr(I.ANNOTATION{i, ...}) = moveInstr i
| moveInstr(I.COPY _) = true
| moveInstr _ = false
val nop =
fn () => I.operate{oper=I.BIS, ra=zeroR, rb=I.REGop zeroR, rc=zeroR}
(*========================================================================
* Parallel Move
*========================================================================*)
fun moveTmpR(I.COPY{tmp=SOME t, ...}) =
(case t of I.Direct r => SOME r | I.FDirect f => SOME f | _ => NONE)
| moveTmpR(I.ANNOTATION{i,...}) = moveTmpR i
| moveTmpR _ = NONE
fun moveDstSrc(I.COPY{dst, src, ...}) = (dst, src)
| moveDstSrc(I.ANNOTATION{i,...}) = moveDstSrc i
| moveDstSrc _ = error "moveDstSrc"
(*========================================================================
* Branches and Calls/Returns
*========================================================================*)
fun branchTargets(I.ANNOTATION{i,...}) = branchTargets i
| branchTargets(I.INSTR(instr)) =
(case instr
of (I.BRANCH{b=I.BR, lab, ...}) => [LABELLED lab]
| (I.BRANCH{lab, ...}) => [LABELLED lab, FALLTHROUGH]
| (I.FBRANCH{lab, ...}) => [LABELLED lab, FALLTHROUGH]
| (I.JMPL(_,[])) => [ESCAPES]
| (I.JMPL(_,labs)) => map LABELLED labs
| (I.RET _) => [ESCAPES]
| (I.JSR{cutsTo, ...}) => FALLTHROUGH::map LABELLED cutsTo
| (I.BSR{cutsTo, ...}) => FALLTHROUGH::map LABELLED cutsTo
| _ => error "branchTargets"
(*esac*))
| branchTargets _ = error "branchTargets"
fun jump label = I.branch{b=I.BR,r=zeroR,lab=label}
val immedRange = {lo= ~32768, hi = 32768}
fun loadImmed{immed,t} =
I.lda{r=t,b=zeroR,
d=if #lo immedRange <= immed andalso immed <= #hi immedRange
then I.IMMop immed else I.LABop(I.T.LI(I.T.I.fromInt(64,immed)))}
fun loadOperand{opn,t} = I.lda{r=t,b=zeroR,d=opn}
fun setJumpTarget(I.ANNOTATION{i,a},lab) =
I.ANNOTATION{i=setJumpTarget(i,lab),a=a}
| setJumpTarget(I.INSTR(I.BRANCH{b=I.BR,r as CB.CELL{id=31,...}, ...}), lab) =
I.branch{b=I.BR,r=r,lab=lab}
| setJumpTarget _ = error "setJumpTarget"
fun setBranchTargets{i=I.ANNOTATION{a,i}, t, f} =
I.ANNOTATION{a=a, i=setBranchTargets{i=i, t=t, f=f}}
| setBranchTargets{i=I.INSTR(I.BRANCH{b=I.BR,r as CB.CELL{id=31,...}, ...}), ...} =
error "setBranchTargets"
| setBranchTargets{i=I.INSTR(I.BRANCH{b,r,...}), t, f} = I.branch{b=b,r=r,lab=t}
| setBranchTargets{i=I.INSTR(I.FBRANCH{b,f,...}), t, ...} = I.fbranch{b=b,f=f,lab=t}
| setBranchTargets _ = error "setBranchTargets"
fun negateConditional (br, lab) = let
fun revBranch I.BEQ = I.BNE
| revBranch I.BGE = I.BLT
| revBranch I.BGT = I.BLE
| revBranch I.BLE = I.BGT
| revBranch I.BLT = I.BGE
| revBranch I.BLBC = I.BLBS
| revBranch I.BLBS = I.BLBC
| revBranch _ = raise NegateConditional
fun revFBranch I.FBEQ = I.FBNE
| revFBranch I.FBNE = I.FBEQ
| revFBranch I.FBGE = I.FBLT
| revFBranch I.FBGT = I.FBLE
| revFBranch I.FBLE = I.FBGT
| revFBranch I.FBLT = I.FBGE
in
case br
of I.INSTR(I.BRANCH{b,r,...}) => I.branch{b=revBranch b,r=r,lab=lab}
| I.INSTR(I.FBRANCH{b,f,...}) => I.fbranch{b=revFBranch b,f=f,lab=lab}
| I.ANNOTATION{i,a} => I.ANNOTATION{i=negateConditional(i, lab),a=a}
| _ => raise NegateConditional
end
(*========================================================================
* Equality and hashing for operands
*========================================================================*)
fun hashOpn(I.REGop r) = CB.hashCell r
| hashOpn(I.IMMop i) = Word.fromInt i
| hashOpn(I.HILABop l) = MLTreeHash.hash l
| hashOpn(I.LOLABop l) = MLTreeHash.hash l
| hashOpn(I.LABop l) = MLTreeHash.hash l
fun eqOpn(I.REGop a,I.REGop b) = CB.sameColor(a,b)
| eqOpn(I.IMMop a,I.IMMop b) = a = b
| eqOpn(I.HILABop a,I.HILABop b) = MLTreeEval.==(a,b)
| eqOpn(I.LOLABop a,I.LOLABop b) = MLTreeEval.==(a,b)
| eqOpn(I.LABop a,I.LABop b) = MLTreeEval.==(a,b)
| eqOpn _ = false
(*========================================================================
* Definition and use (for register allocation mainly)
*========================================================================*)
fun defUseR instr = let
fun alphaDU(instr) = let
fun Oper {oper, ra, rb=I.REGop rb, rc} = ([rc], [ra, rb])
| Oper {oper, ra, rb, rc} = ([rc], [ra])
fun Opn(I.REGop rb,rs) = rb::rs
| Opn(_,rs) = rs
fun FMem (freg, (rd, _)) = ([], [rd])
fun trap (def,use) =(def, use)
in
case instr of
(* load/store instructions *)
I.LDA{r, b, ...} => ([r], [b])
| I.LDAH{r, b, ...} => ([r], [b])
| I.LOAD{r, b, ...} => ([r], [b])
| I.STORE{r, b, ...} => ([], [r,b])
| I.FLOAD{b, ...} => ([], [b])
| I.FSTORE{b, ...} => ([], [b])
(* branch instructions *)
| I.JMPL ({r, b, ...},_) => ([r], [b])
| I.JSR{r, b, defs, uses, ...} => (r::C.getReg defs, b::C.getReg uses)
| I.BSR{r, defs, uses, ...} => (r::C.getReg defs,C.getReg uses)
| I.RET{r, b, ...} => ([r],[b])
| I.BRANCH{b=I.BR, r, ...} => ([r], [])
| I.BRANCH{r, ...} => ([], [r])
(* operate *)
| I.OPERATE arg => Oper arg
| I.PSEUDOARITH {oper, ra, rb=I.REGop rb, rc, tmps} =>
(rc:: C.getReg tmps, [ra, rb])
| I.PSEUDOARITH {oper, ra, rb, rc, tmps} => (rc:: C.getReg tmps, [ra])
| I.OPERATEV arg => trap(Oper arg)
| I.CMOVE{ra,rb,rc,...} => ([rc],Opn(rb,[ra,rc]))
(* floating operate *)
| I.FOPERATEV _ => trap([], [])
| I.TRAPB => trap([],[])
(* macro *)
| I.CALL_PAL{def,use, ...} => (C.getReg def, C.getReg use)
| _ => ([],[])
end
in
case instr
of I.ANNOTATION{a, i, ...} => defUseR i
| I.LIVE{regs, ...} => ([], C.getReg regs)
| I.KILL{regs, ...} => (C.getReg regs, [])
| I.COPY{k=CB.GP, dst, src, tmp, ...} =>
(case tmp
of SOME(I.Direct r) => (r::dst, src)
| SOME(I.Displace{base, ...}) => (dst, base::src)
| _ => (dst, src)
(*esac*))
| I.COPY _ => ([], [])
| I.INSTR(i) => alphaDU(i)
end
(* Use of FP registers *)
fun defUseF instr = let
fun alphaDU instr =
case instr of
I.FBRANCH{f, ...} => ([],[f])
| I.FLOAD{r, ...} => ([r], [])
| I.FSTORE{r, ...} => ([], [r])
| I.FOPERATE{fa, fb, fc, ...} => ([fc], [fa, fb])
| I.FUNARY{fb, fc, ...} => ([fc], [fb])
| I.PSEUDOARITH{tmps, ...} => (C.getFreg tmps, [])
| I.FOPERATEV{fa, fb, fc, ...} => ([fc], [fa, fb])
| I.FCMOVE{fa,fb,fc,...} => ([fc], [fa, fb])
| I.JSR{defs,uses, ...} => (C.getFreg defs,C.getFreg uses)
| I.BSR{defs,uses, ...} => (C.getFreg defs,C.getFreg uses)
| _ => ([],[])
in
case instr
of I.ANNOTATION{a, i, ...} => defUseF i
| I.INSTR(i) => alphaDU(i)
| I.LIVE{regs, ...} => ([], C.getFreg regs)
| I.COPY{k=CB.FP, dst, src, tmp, ...} =>
(case tmp
of SOME(I.FDirect f) => (f::dst, src)
| _ => (dst, src)
(*esac*))
| I.COPY _ => ([], [])
| I.KILL{regs, ...} => (C.getFreg regs, [])
end
fun defUse CB.GP = defUseR
| defUse CB.FP = defUseF
| defUse _ = error "defUse"
(*=======================================================================
* Annotations
*=======================================================================*)
fun getAnnotations(I.ANNOTATION{i,a}) =
let val (i,an) = getAnnotations i in (i,a::an) end
| getAnnotations i = (i,[])
fun annotate(i,a) = I.ANNOTATION{i=i,a=a}
(*========================================================================
* Replicate an instruction
*========================================================================*)
fun replicate(I.ANNOTATION{i,a}) = I.ANNOTATION{i=replicate i,a=a}
| replicate(I.COPY{k, sz, tmp=SOME _, dst, src}) =
I.COPY{tmp=SOME(I.Direct(C.newReg())), dst=dst, src=src, k=k, sz=sz}
| replicate i = i
end
|
