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[smlnj] Diff of /sml/trunk/src/MLRISC/x86/instructions/x86Props.sml
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Diff of /sml/trunk/src/MLRISC/x86/instructions/x86Props.sml

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revision 565, Sun Mar 5 04:10:18 2000 UTC revision 796, Tue Mar 6 00:04:33 2001 UTC
# Line 8  Line 8 
8    structure I = X86Instr    structure I = X86Instr
9    structure C = I.C    structure C = I.C
10    structure LE = I.LabelExp    structure LE = I.LabelExp
11      structure T = I.T
12    
13    exception NegateConditional    exception NegateConditional
14    
15    fun error msg = MLRiscErrorMsg.error("X86Props",msg)    fun error msg = MLRiscErrorMsg.error("X86Props",msg)
16    
17    datatype kind = IK_JUMP | IK_NOP | IK_INSTR | IK_COPY | IK_CALL    datatype kind = IK_JUMP | IK_NOP | IK_INSTR | IK_COPY | IK_CALL
18                  | IK_PHI | IK_SOURCE | IK_SINK                  | IK_CALL_WITH_CUTS | IK_PHI | IK_SOURCE | IK_SINK
19    datatype target = LABELLED of Label.label | FALLTHROUGH | ESCAPES    datatype target = LABELLED of Label.label | FALLTHROUGH | ESCAPES
20   (*========================================================================   (*========================================================================
21    *  Instruction Kinds    *  Instruction Kinds
# Line 23  Line 24 
24      | instrKind (I.JCC _) = IK_JUMP      | instrKind (I.JCC _) = IK_JUMP
25      | instrKind (I.COPY _) = IK_COPY      | instrKind (I.COPY _) = IK_COPY
26      | instrKind (I.FCOPY _) = IK_COPY      | instrKind (I.FCOPY _) = IK_COPY
27        | instrKind (I.CALL{cutsTo=_::_,...}) = IK_CALL_WITH_CUTS
28      | instrKind (I.CALL _) = IK_CALL      | instrKind (I.CALL _) = IK_CALL
29        | instrKind (I.PHI _)    = IK_PHI
30        | instrKind (I.SOURCE _) = IK_SOURCE
31        | instrKind (I.SINK _)   = IK_SINK
32        | instrKind (I.RET _) = IK_JUMP
33      | instrKind (I.ANNOTATION{i,...}) = instrKind i      | instrKind (I.ANNOTATION{i,...}) = instrKind i
34      | instrKind _ = IK_INSTR      | instrKind _ = IK_INSTR
35    
# Line 32  Line 38 
38      | moveInstr(I.FCOPY _) = true      | moveInstr(I.FCOPY _) = true
39      | moveInstr(I.MOVE{mvOp=I.MOVL, src=I.Direct _, dst=I.MemReg _, ...}) = true      | moveInstr(I.MOVE{mvOp=I.MOVL, src=I.Direct _, dst=I.MemReg _, ...}) = true
40      | moveInstr(I.MOVE{mvOp=I.MOVL, src=I.MemReg _, dst=I.Direct _, ...}) = true      | moveInstr(I.MOVE{mvOp=I.MOVL, src=I.MemReg _, dst=I.Direct _, ...}) = true
41        | moveInstr(I.FMOVE{fsize=I.FP64,src=I.FPR _,dst=I.FPR _, ...}) = true
42        | moveInstr(I.FMOVE{fsize=I.FP64,src=I.FPR _,dst=I.FDirect _, ...}) = true
43        | moveInstr(I.FMOVE{fsize=I.FP64,src=I.FDirect _,dst=I.FPR _, ...}) = true
44        | moveInstr(I.FMOVE{fsize=I.FP64,src=I.FDirect _,dst=I.FDirect _, ...}) = true
45      | moveInstr(I.ANNOTATION{i,...}) = moveInstr i      | moveInstr(I.ANNOTATION{i,...}) = moveInstr i
46      | moveInstr _ = false      | moveInstr _ = false
47    
# Line 43  Line 53 
53    *========================================================================*)    *========================================================================*)
54    fun moveTmpR(I.COPY{tmp=SOME(I.Direct r), ...}) = SOME r    fun moveTmpR(I.COPY{tmp=SOME(I.Direct r), ...}) = SOME r
55      | moveTmpR(I.FCOPY{tmp=SOME(I.FDirect f), ...}) = SOME f      | moveTmpR(I.FCOPY{tmp=SOME(I.FDirect f), ...}) = SOME f
56        | moveTmpR(I.FCOPY{tmp=SOME(I.FPR f), ...}) = SOME f
57      | moveTmpR(I.ANNOTATION{i,...}) = moveTmpR i      | moveTmpR(I.ANNOTATION{i,...}) = moveTmpR i
58      | moveTmpR _ = NONE      | moveTmpR _ = NONE
59    
# Line 50  Line 61 
61      | moveDstSrc(I.FCOPY{src, dst, ...}) = (dst, src)      | moveDstSrc(I.FCOPY{src, dst, ...}) = (dst, src)
62      | moveDstSrc(I.MOVE{src=I.Direct rs, dst=I.MemReg rd, ...}) = ([rd], [rs])      | moveDstSrc(I.MOVE{src=I.Direct rs, dst=I.MemReg rd, ...}) = ([rd], [rs])
63      | moveDstSrc(I.MOVE{src=I.MemReg rs, dst=I.Direct rd, ...}) = ([rd], [rs])      | moveDstSrc(I.MOVE{src=I.MemReg rs, dst=I.Direct rd, ...}) = ([rd], [rs])
64        | moveDstSrc(I.FMOVE{src=I.FPR rs, dst=I.FPR rd, ...}) = ([rd], [rs])
65        | moveDstSrc(I.FMOVE{src=I.FDirect rs, dst=I.FPR rd, ...}) = ([rd], [rs])
66        | moveDstSrc(I.FMOVE{src=I.FPR rs, dst=I.FDirect rd, ...}) = ([rd], [rs])
67        | moveDstSrc(I.FMOVE{src=I.FDirect rs, dst=I.FDirect rd, ...}) = ([rd], [rs])
68      | moveDstSrc(I.ANNOTATION{i,...}) = moveDstSrc i      | moveDstSrc(I.ANNOTATION{i,...}) = moveDstSrc i
69      | moveDstSrc _ = error "moveDstSrc"      | moveDstSrc _ = error "moveDstSrc"
70    
# Line 59  Line 74 
74    fun branchTargets(I.JMP(_, [])) = [ESCAPES]    fun branchTargets(I.JMP(_, [])) = [ESCAPES]
75      | branchTargets(I.JMP(_, labs)) = map LABELLED labs      | branchTargets(I.JMP(_, labs)) = map LABELLED labs
76      | branchTargets(I.RET _) = [ESCAPES]      | branchTargets(I.RET _) = [ESCAPES]
77      | branchTargets(I.JCC{opnd=I.ImmedLabel(LE.LABEL(lab)), ...}) =      | branchTargets(I.JCC{opnd=I.ImmedLabel(T.LABEL(lab)), ...}) =
78          [FALLTHROUGH, LABELLED lab]          [FALLTHROUGH, LABELLED lab]
79        | branchTargets(I.CALL{cutsTo, ...}) = FALLTHROUGH :: map LABELLED cutsTo
80      | branchTargets(I.ANNOTATION{i,...}) = branchTargets i      | branchTargets(I.ANNOTATION{i,...}) = branchTargets i
81      | branchTargets _ = error "branchTargets"      | branchTargets _ = error "branchTargets"
82    
83    fun jump label = I.JMP (I.ImmedLabel(LE.LABEL label), [label])    fun jump label = I.JMP (I.ImmedLabel(T.LABEL label), [label])
84    
85    exception NotImplemented    exception NotImplemented
86    fun setTargets(I.JMP(I.ImmedLabel _,_),[l]) = jump l    fun setTargets(I.JMP(I.ImmedLabel _,_),[l]) = jump l
87      | setTargets(I.JMP(opnd,_),_) = error "setTargets"      | setTargets(I.JMP(opnd,_),_) = error "setTargets"
88      | setTargets(I.JCC{cond,opnd=I.ImmedLabel _},[f,t]) =      | setTargets(I.JCC{cond,opnd=I.ImmedLabel _},[f,t]) =
89          I.JCC{cond=cond,opnd=I.ImmedLabel(LE.LABEL t)}          I.JCC{cond=cond,opnd=I.ImmedLabel(T.LABEL t)}
90      | setTargets(I.JCC _,_) = error "setTargets"      | setTargets(I.JCC _,_) = error "setTargets"
91      | setTargets(I.ANNOTATION{i,a},l) = I.ANNOTATION{i=setTargets(i,l),a=a}      | setTargets(I.ANNOTATION{i,a},l) = I.ANNOTATION{i=setTargets(i,l),a=a}
92      | setTargets(i,_) = i      | setTargets(i,_) = i
# Line 80  Line 96 
96    val toInt32 = Int32.fromLarge o Int.toLarge    val toInt32 = Int32.fromLarge o Int.toLarge
97    fun loadImmed{immed,t} =    fun loadImmed{immed,t} =
98        I.MOVE{mvOp=I.MOVL,src=I.Immed(toInt32 immed),dst=I.Direct t}        I.MOVE{mvOp=I.MOVL,src=I.Immed(toInt32 immed),dst=I.Direct t}
99      fun loadOperand{opn,t} = I.MOVE{mvOp=I.MOVL,src=opn,dst=I.Direct t}
100    
101   (*=====================================================================   (*=====================================================================
102    *  Hashing and Equality on operands    *  Hashing and Equality on operands
# Line 88  Line 105 
105       | hashOpn(I.ImmedLabel le) = LE.hash le + 0w123       | hashOpn(I.ImmedLabel le) = LE.hash le + 0w123
106       | hashOpn(I.Relative i) = Word.fromInt i + 0w1232       | hashOpn(I.Relative i) = Word.fromInt i + 0w1232
107       | hashOpn(I.LabelEA le) = LE.hash le + 0w44444       | hashOpn(I.LabelEA le) = LE.hash le + 0w44444
108       | hashOpn(I.Direct r)  = Word.fromInt r       | hashOpn(I.Direct r)  = C.hashCell r
109       | hashOpn(I.MemReg r)  = Word.fromInt r + 0w2123       | hashOpn(I.MemReg r)  = C.hashCell r + 0w2123
110       | hashOpn(I.ST f) = Word.fromInt f + 0w88       | hashOpn(I.ST f) = C.hashCell f + 0w88
111       | hashOpn(I.FDirect f) = Word.fromInt f + 0w8888       | hashOpn(I.FPR f) = C.hashCell f + 0w881
112         | hashOpn(I.FDirect f) = C.hashCell f + 0w31245
113       | hashOpn(I.Displace {base, disp, ...}) =       | hashOpn(I.Displace {base, disp, ...}) =
114           hashOpn disp + Word.fromInt base           hashOpn disp + C.hashCell base
115       | hashOpn(I.Indexed {base, index, scale, disp, ...}) =       | hashOpn(I.Indexed {base, index, scale, disp, ...}) =
116           Word.fromInt index + Word.fromInt scale + hashOpn disp           C.hashCell index + Word.fromInt scale + hashOpn disp
117     fun eqOpn(I.Immed a,I.Immed b) = a = b     fun eqOpn(I.Immed a,I.Immed b) = a = b
118       | eqOpn(I.ImmedLabel a,I.ImmedLabel b) = LE.==(a,b)       | eqOpn(I.ImmedLabel a,I.ImmedLabel b) = LE.==(a,b)
119       | eqOpn(I.Relative a,I.Relative b) = a = b       | eqOpn(I.Relative a,I.Relative b) = a = b
120       | eqOpn(I.LabelEA a,I.LabelEA b) = LE.==(a,b)       | eqOpn(I.LabelEA a,I.LabelEA b) = LE.==(a,b)
121       | eqOpn(I.Direct a,I.Direct b) = a = b       | eqOpn(I.Direct a,I.Direct b) = C.sameColor(a,b)
122       | eqOpn(I.MemReg a,I.MemReg b) = a = b       | eqOpn(I.MemReg a,I.MemReg b) = C.sameColor(a,b)
123       | eqOpn(I.ST a,I.ST b) = a = b       | eqOpn(I.FDirect a,I.FDirect b) = C.sameColor(a,b)
124       | eqOpn(I.FDirect a,I.FDirect b) = a = b       | eqOpn(I.ST a,I.ST b) = C.sameColor(a,b)
125         | eqOpn(I.FPR a,I.FPR b) = C.sameColor(a,b)
126       | eqOpn(I.Displace{base=a,disp=b,...},I.Displace{base=c,disp=d,...}) =       | eqOpn(I.Displace{base=a,disp=b,...},I.Displace{base=c,disp=d,...}) =
127            a = c andalso eqOpn(b,d)            C.sameColor(a,c) andalso eqOpn(b,d)
128       | eqOpn(I.Indexed{base=a,index=b,scale=c,disp=d,...},       | eqOpn(I.Indexed{base=a,index=b,scale=c,disp=d,...},
129               I.Indexed{base=e,index=f,scale=g,disp=h,...}) =               I.Indexed{base=e,index=f,scale=g,disp=h,...}) =
130            b = f andalso c = g andalso a = e andalso eqOpn(d,h)            C.sameColor(b,f) andalso c = g
131              andalso sameCellOption(a,e) andalso eqOpn(d,h)
132       | eqOpn _ = false       | eqOpn _ = false
133       and sameCellOption(NONE, NONE) = true
134         | sameCellOption(SOME x, SOME y) = C.sameColor(x,y)
135         | sameCellOption _ = false
136    
137   (*========================================================================   (*========================================================================
138    *  Definition and use (for register allocation mainly)    *  Definition and use (for register allocation mainly)
# Line 126  Line 149 
149    
150      fun operandUse opnd = operandAcc(opnd, [])      fun operandUse opnd = operandAcc(opnd, [])
151    
152        fun operandUse2(src1, src2) = ([], operandAcc(src1, operandUse src2))
153        fun operandUse3(x, y, z) = ([], operandAcc(x, operandAcc(y, operandUse y)))
154    
155      fun operandDef(I.Direct r) = [r]      fun operandDef(I.Direct r) = [r]
156        | operandDef(I.MemReg r) = [r]        | operandDef(I.MemReg r) = [r]
157        | operandDef _ = []        | operandDef _ = []
# Line 134  Line 160 
160        val uses = operandUse src        val uses = operandUse src
161      in      in
162        case multDivOp        case multDivOp
163         of (I.IDIV | I.UDIV) => (eaxPair, C.edx::C.eax::uses)         of (I.IDIVL | I.DIVL) => (eaxPair, C.edx::C.eax::uses)
164          | I.UMUL => (eaxPair, C.eax::uses)          | I.MULL => (eaxPair, C.eax::uses)
165      end      end
166    
167      fun unary opnd = (operandDef opnd, operandUse opnd)      fun unary opnd = (operandDef opnd, operandUse opnd)
168      fun cmptest{lsrc, rsrc} = ([], operandAcc(lsrc, operandUse rsrc))      fun cmptest{lsrc, rsrc} = ([], operandAcc(lsrc, operandUse rsrc))
169      fun push arg = ([], operandUse arg)      fun push arg = ([C.stackptrR], operandAcc(arg, [C.stackptrR]))
170      fun float opnd = ([], operandUse opnd)      fun float opnd = ([], operandUse opnd)
171    in    in
172      case instr      case instr
173       of I.JMP(opnd, _)        => ([], operandUse opnd)       of I.JMP(opnd, _)        => ([], operandUse opnd)
174        | I.JCC{opnd, ...}      => ([], operandUse opnd)        | I.JCC{opnd, ...}      => ([], operandUse opnd)
175        | I.CALL(opnd,defs,uses,_)=> (#1 defs, operandAcc(opnd, #1 uses))        | I.CALL{opnd,defs,uses,...} =>
176               (C.getReg defs, operandAcc(opnd, C.getReg uses))
177        | I.MOVE{src, dst=I.Direct r, ...} => ([r], operandUse src)        | I.MOVE{src, dst=I.Direct r, ...} => ([r], operandUse src)
178        | I.MOVE{src, dst=I.MemReg r, ...} => ([r], operandUse src)        | I.MOVE{src, dst=I.MemReg r, ...} => ([r], operandUse src)
179        | I.MOVE{src, dst, ...} => ([], operandAcc(dst, operandUse src))        | I.MOVE{src, dst, ...} => ([], operandAcc(dst, operandUse src))
180        | I.LEA{r32, addr}      => ([r32], operandUse addr)        | I.LEA{r32, addr}      => ([r32], operandUse addr)
181        | ( I.CMPL arg | I.CMPW arg | I.CMPB arg        | ( I.CMPL arg | I.CMPW arg | I.CMPB arg
182          | I.TESTL arg | I.TESTW arg | I.TESTB arg) => cmptest arg          | I.TESTL arg | I.TESTW arg | I.TESTB arg) => cmptest arg
183          | I.BITOP{lsrc, rsrc, ...} => cmptest{lsrc=lsrc,rsrc=rsrc}
184        | I.BINARY{binOp=I.XORL,src=I.Direct rs,dst=I.Direct rd,...} =>        | I.BINARY{binOp=I.XORL,src=I.Direct rs,dst=I.Direct rd,...} =>
185             if rs=rd then ([rd],[]) else ([rd],[rs,rd])             if C.sameColor(rs,rd) then ([rd],[]) else ([rd],[rs,rd])
186        | I.BINARY{src,dst,...} =>        | I.BINARY{src,dst,...} =>
187             (operandDef dst, operandAcc(src, operandUse dst))             (operandDef dst, operandAcc(src, operandUse dst))
188        | I.LEAVE               => error "leave"        | I.ENTER _             => ([C.esp, C.ebp], [C.esp, C.ebp])
189          | I.LEAVE               => ([C.esp, C.ebp], [C.esp, C.ebp])
190        | I.MULTDIV arg         => multdiv arg        | I.MULTDIV arg         => multdiv arg
191        | I.MUL3{src1, src2=SOME _, dst}=> ([dst], operandUse src1)        | I.MUL3{src1, src2=SOME _, dst}=> ([dst], operandUse src1)
192        | I.MUL3{src1, dst, ...}=> ([dst], dst::operandUse src1)        | I.MUL3{src1, dst, ...}=> ([dst], dst::operandUse src1)
# Line 165  Line 194 
194        | I.UNARY{opnd, ...}    => unary opnd        | I.UNARY{opnd, ...}    => unary opnd
195        | I.SET{opnd, ...}      => unary opnd        | I.SET{opnd, ...}      => unary opnd
196        | ( I.PUSHL arg | I.PUSHW arg | I.PUSHB arg ) => push arg        | ( I.PUSHL arg | I.PUSHW arg | I.PUSHB arg ) => push arg
197        | I.POP arg             => (operandDef arg, [])        | I.POP arg             => (C.stackptrR::operandDef arg, [C.stackptrR])
198        | I.CDQ                 => ([C.edx], [C.eax])        | I.CDQ                 => ([C.edx], [C.eax])
199    
200        | I.COPY{dst, src, tmp=SOME(I.Direct r), ...}   => (r::dst, src)        | I.COPY{dst, src, tmp=SOME(I.Direct r), ...}   => (r::dst, src)
# Line 173  Line 202 
202        | I.FSTPT opnd          => float opnd        | I.FSTPT opnd          => float opnd
203        | I.FSTPL opnd          => float opnd        | I.FSTPL opnd          => float opnd
204        | I.FSTPS opnd          => float opnd        | I.FSTPS opnd          => float opnd
205          | I.FSTL opnd           => float opnd
206          | I.FSTS opnd           => float opnd
207        | I.FLDL opnd           => float opnd        | I.FLDL opnd           => float opnd
208        | I.FLDS opnd           => float opnd        | I.FLDS opnd           => float opnd
209        | I.FILD opnd           => float opnd        | I.FILD opnd           => float opnd
# Line 182  Line 213 
213        | I.FIBINARY{src, ...}  => ([], operandUse src)        | I.FIBINARY{src, ...}  => ([], operandUse src)
214        | I.FENV{opnd, ...}     => ([], operandUse opnd)        | I.FENV{opnd, ...}     => ([], operandUse opnd)
215        | I.FNSTSW              => ([C.eax], [])        | I.FNSTSW              => ([C.eax], [])
216          | I.FUCOM opnd          => float opnd
217          | I.FUCOMP opnd         => float opnd
218    
219          | I.FMOVE{src, dst, ...} => operandUse2(src, dst)
220          | I.FILOAD{ea, dst, ...} => operandUse2(ea, dst)
221          | I.FCMP{lsrc, rsrc, ...} => operandUse2(lsrc, rsrc)
222          | I.FBINOP{lsrc, rsrc, dst, ...} => operandUse3(lsrc, rsrc, dst)
223          | I.FIBINOP{lsrc, rsrc, dst, ...} => operandUse3(lsrc, rsrc, dst)
224          | I.FUNOP{src, dst, ...} => operandUse2(src, dst)
225    
226        | I.SAHF                => ([], [C.eax])        | I.SAHF                => ([], [C.eax])
227          (* This sets the low order byte,          (* This sets the low order byte,
228           * do potentially it may define *and* use           * do potentially it may define *and* use
229           *)           *)
230        | I.CMOV{src,dst,...} => ([dst], operandAcc(src, [dst]))        | I.CMOV{src,dst,...} => ([dst], operandAcc(src, [dst]))
231          | I.ANNOTATION{a=C.DEF_USE{cellkind=C.GP,defs,uses}, i, ...} =>
232            let val (d,u) = defUseR i in (defs@d, u@uses) end
233        | I.ANNOTATION{a, i, ...} => defUseR i        | I.ANNOTATION{a, i, ...} => defUseR i
234        | _                     => ([], [])        | _                     => ([], [])
235    end (* defUseR *)    end (* defUseR *)
236    
237    fun defUseF instr = let    fun defUseF instr = let
238      fun operand(I.FDirect f) = [f]      fun operand(I.FDirect f) = [f]
239          | operand(I.FPR f) = [f]
240        | operand _ = []        | operand _ = []
241    
242        fun operandAcc(I.FDirect f, acc) = f::acc
243          | operandAcc(I.FPR f, acc) = f::acc
244          | operandAcc(_ , acc) = acc
245    
246        fun fbinop(lsrc, rsrc, dst) =
247        let val def = operand dst
248            val use = operandAcc(lsrc, operand rsrc)
249        in  (def, use)
250        end
251    
252        val fcmpTmp = [C.ST 0]
253    
254    in    in
255      case instr      case instr
256       of I.FSTPT opnd            => (operand opnd, [])       of I.FSTPT opnd            => (operand opnd, [])
257        | I.FSTPL opnd            => (operand opnd, [])        | I.FSTPL opnd            => (operand opnd, [])
258        | I.FSTPS opnd            => (operand opnd, [])        | I.FSTPS opnd            => (operand opnd, [])
259          | I.FSTL opnd             => (operand opnd, [])
260          | I.FSTS opnd             => (operand opnd, [])
261        | I.FLDT opnd             => ([], operand opnd)        | I.FLDT opnd             => ([], operand opnd)
262        | I.FLDL opnd             => ([], operand opnd)        | I.FLDL opnd             => ([], operand opnd)
263        | I.FLDS opnd             => ([], operand opnd)        | I.FLDS opnd             => ([], operand opnd)
264        | I.CALL(_, defs, uses,_) => (#2 defs, #2 uses)        | I.FUCOM opnd            => ([], operand opnd)
265          | I.FUCOMP opnd           => ([], operand opnd)
266          | I.CALL{defs, uses, ...} => (C.getFreg defs, C.getFreg uses)
267        | I.FBINARY{dst, src, ...}=> (operand dst, operand dst @ operand src)        | I.FBINARY{dst, src, ...}=> (operand dst, operand dst @ operand src)
268        | I.FCOPY{dst, src, tmp=SOME(I.FDirect f), ...}  => (f::dst, src)        | I.FCOPY{dst, src, tmp=SOME(I.FDirect f), ...}  => (f::dst, src)
269          | I.FCOPY{dst, src, tmp=SOME(I.FPR f), ...}  => (f::dst, src)
270        | I.FCOPY{dst, src, ...}  => (dst, src)        | I.FCOPY{dst, src, ...}  => (dst, src)
271    
272          | I.FMOVE{src, dst, ...} => (operand dst, operand src)
273          | I.FILOAD{ea, dst, ...} => (operand dst, [])
274          | I.FCMP{lsrc, rsrc, ...} => (fcmpTmp, operandAcc(lsrc, operand rsrc))
275          | I.FBINOP{lsrc, rsrc, dst, ...} => fbinop(lsrc, rsrc, dst)
276          | I.FIBINOP{lsrc, rsrc, dst, ...} => fbinop(lsrc, rsrc, dst)
277          | I.FUNOP{src, dst, ...} => (operand dst, operand src)
278    
279          | I.ANNOTATION{a=C.DEF_USE{cellkind=C.FP,defs,uses}, i, ...} =>
280            let val (d,u) = defUseF i in (defs@d, u@uses) end
281        | I.ANNOTATION{a, i, ...} => defUseF i        | I.ANNOTATION{a, i, ...} => defUseF i
282        | _  => ([], [])        | _  => ([], [])
283    end    end
# Line 221  Line 293 
293         let val (i,an) = getAnnotations i in (i,a::an) end         let val (i,an) = getAnnotations i in (i,a::an) end
294      | getAnnotations i = (i,[])      | getAnnotations i = (i,[])
295    fun annotate(i,a) = I.ANNOTATION{i=i,a=a}    fun annotate(i,a) = I.ANNOTATION{i=i,a=a}
296    
297      (*========================================================================
298       *  Replicate an instruction
299       *========================================================================*)
300      fun replicate(I.ANNOTATION{i,a}) = I.ANNOTATION{i=replicate i,a=a}
301        | replicate(I.COPY{tmp=SOME _, dst, src}) =
302            I.COPY{tmp=SOME(I.Direct(C.newReg())), dst=dst, src=src}
303        | replicate(I.FCOPY{tmp=SOME _, dst, src}) =
304            I.FCOPY{tmp=SOME(I.FDirect(C.newFreg())), dst=dst, src=src}
305        | replicate i = i
306  end  end
307    

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