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|
(* hppaRewrite.sml -- rewrite an hppa instruction
*
* COPYRIGHT (c) 1997 Bell Labs
*)
functor HppaRewrite(Instr:HPPAINSTR) = struct
structure I = Instr
structure C = I.C
structure CB = CellsBasis
structure CS = CB.CellSet
fun error msg = MLRiscErrorMsg.error("HppaRewrite",msg)
fun rewriteUse(instr, rs, rt) = let
fun replc r = if CB.sameColor(r,rs) then rt else r
fun replcEA(SOME(I.Displace{base, disp, mem})) =
SOME(I.Displace{base=replc base, disp=disp, mem=mem})
| replcEA ea = ea
fun hppaUse(instr) =
(case instr
of I.STORE{st, b, d, r, mem} =>
I.STORE{st=st, b=replc b, d=d, r=replc r, mem=mem}
| I.LOAD{l, r1, r2, t, mem} =>
I.LOAD{l=l, r1=replc r1, r2=replc r2, t=t, mem=mem}
| I.LOADI{li, r, i, t, mem=mem} =>
I.LOADI{li=li, r=replc r, i=i, t=t, mem=mem}
| I.ARITH{a, r1, r2, t} => I.ARITH{a=a, r1=replc r1, r2=replc r2, t=t}
| I.ARITHI{ai, r, i, t} => I.ARITHI{ai=ai, r=replc r, i=i, t=t}
| I.COMCLR_LDO{cc, r1, r2, b, i, t1, t2} =>
if CB.registerId t1 <> 0 andalso not(CB.sameColor(t1,t2))
andalso CB.sameColor(t2,rs) then
error "rewriteUse: COMCLR_LDO"
else
I.COMCLR_LDO{cc=cc, r1=replc r1, r2=replc r2, b=replc b, i=i,
t1=t1, t2=t2}
| I.COMICLR_LDO{cc, i1, r2, b, i2, t1, t2} =>
if CB.registerId t1 <> 0 andalso not(CB.sameColor(t1,t2))
andalso CB.sameColor(t2,rs) then
error "rewriteUse: COMICLR_LDO"
else
I.COMICLR_LDO{cc=cc, i1=i1, r2=replc r2, b=replc b, i2=i2,
t1=t1, t2=t2}
| I.SHIFTV{sv, r, len, t} => I.SHIFTV{sv=sv, r=replc r, len=len, t=t}
| I.SHIFT{s, r, p, len, t} => I.SHIFT{s=s, r=replc r, p=p, len=len, t=t}
| I.BCOND{cmp, bc, r1, r2, t, f, n, nop} =>
I.BCOND{cmp=cmp, bc=bc, r1=replc r1, r2=replc r2, t=t, f=f,n=n, nop=nop}
| I.BCONDI{cmpi, bc, i, r2, t, f, n, nop} =>
I.BCONDI{cmpi=cmpi, bc=bc, i=i, r2=replc r2, t=t, f=f,n=n, nop=nop}
| I.BB{bc, r, p, t, f, n, nop} =>
I.BB{bc=bc, r=replc r, p=p, t=t, f=f,n=n, nop=nop}
| I.BV{x, b, labs, n} => I.BV{x=replc x, b=replc b, labs=labs,n=n}
| I.BE{b, d, sr, labs, n} => I.BE{b=replc b, d=d, sr=sr, labs=labs, n=n}
| I.BLR{x, t, labs, n} => I.BLR{x=replc x, t=t, labs=labs,n=n}
| I.BLE{b, d, sr, t, defs, uses, cutsTo, mem} =>
I.BLE{b=replc b, d=d, sr=sr, t=t, defs=defs,
uses=CS.map {from=rs,to=rt} uses, cutsTo=cutsTo, mem=mem}
| I.BL{lab, t, defs, uses, mem, cutsTo, n} =>
I.BL{lab=lab, t=t, defs=defs, cutsTo=cutsTo,
uses=CS.map {from=rs,to=rt} uses, mem=mem, n=n}
| I.LDO{b, t, i} => I.LDO{b=replc b, t=t, i=i}
| I.MTCTL{r, t} => I.MTCTL{r=replc r, t=t}
| I.FSTORE{fst, b, d, r, mem} =>
I.FSTORE{fst=fst, b=replc b, d=d, r=r, mem=mem}
| I.FSTOREX{fstx, b, x, r, mem} =>
I.FSTOREX{fstx=fstx, b=replc b, x=replc x, r=r, mem=mem}
| I.FLOAD{fl, b, d, t, mem} =>
I.FLOAD{fl=fl, b=replc b, d=d, t=t, mem=mem}
| I.FLOADX{flx, b, x, t, mem} =>
I.FLOADX{flx=flx, b=replc b, x=replc x, t=t, mem=mem}
| _ => instr
(*esac*))
in
case instr
of (I.ANNOTATION{i, ...}) => rewriteUse(i, rs, rt)
| I.LIVE{regs, spilled} =>
I.LIVE{regs=C.addReg(rt, C.rmvReg(rs, regs)), spilled=spilled}
| I.INSTR(i) => I.INSTR(hppaUse(i))
| I.COPY{k as CB.GP, sz, dst, src, tmp} =>
I.COPY{k=k, sz=sz, dst=dst, src=map replc src, tmp=replcEA tmp}
| _ => error "rewriteUse"
end
fun rewriteDef(instr, rs, rt) = let
fun replc r = if CB.sameColor(r,rs) then rt else r
fun ea (SOME(I.Direct r)) = SOME(I.Direct (replc r))
| ea x = x
fun hppaDef(instr) =
(case instr
of I.ARITH{a, r1, r2, t} => I.ARITH{a=a, r1=r1, r2=r2, t=replc t}
| I.ARITHI{ai, i, r, t} => I.ARITHI{ai=ai, i=i, r=r, t=replc t}
| I.LOAD{l, r1, r2, t, mem} => I.LOAD{l=l,r1=r1,r2=r2,t=replc t,mem=mem}
| I.LOADI{li, i, r, t, mem} => I.LOADI{li=li,i=i,r=r,t=replc t,mem=mem}
| I.COMCLR_LDO{cc, r1, r2, b, i, t1, t2} =>
if CB.registerId t1 <> 0 andalso not(CB.sameColor(t1,t2))
andalso CB.sameColor(t2,rs) then
error "rewriteDef: COMCLR_LDO"
else
I.COMCLR_LDO{cc=cc, r1=r1, r2=r2, b=b, i=i, t1=replc t1, t2=replc t2}
| I.COMICLR_LDO{cc, i1, r2, b, i2, t1, t2} =>
if CB.registerId t1 <> 0 andalso not(CB.sameColor(t1,t2))
andalso CB.sameColor(t2,rs) then
error "rewriteDef: COMICLR_LDO"
else
I.COMICLR_LDO{cc=cc, i1=i1, r2=r2, b=b, i2=i2,
t1=replc t1, t2=replc t2}
| I.SHIFTV{sv, r, len, t} => I.SHIFTV{sv=sv, r=r, len=len, t=replc t}
| I.SHIFT{s, r, p, len, t} => I.SHIFT{s=s, r=r, p=p, len=len, t=replc t}
| I.BLR{x, t, labs, n} => I.BLR{x=x, t=replc t, labs=labs,n=n}
| I.BLE{d, b, sr, t, defs, uses, cutsTo, mem} =>
I.BLE{d=d, b=b, sr=sr, t=replc t,
defs=CS.map {from=rs,to=rt} defs, uses=uses,
cutsTo=cutsTo, mem=mem}
| I.BL{lab, t, defs, uses, mem, cutsTo, n} =>
I.BL{lab=lab, t=replc t, cutsTo=cutsTo,
defs=CS.map {from=rs,to=rt} defs, uses=uses, mem=mem, n=n}
| I.LDIL{i, t} => I.LDIL{i=i, t=replc t}
| I.LDO{i, b, t} => I.LDO{i=i, b=b, t=replc t}
| _ => instr
(*esac*))
in
case instr
of (I.ANNOTATION{i, ...}) => rewriteDef(i, rs, rt)
| I.KILL{regs, spilled} =>
I.KILL{regs=C.addReg(rt, C.rmvReg(rs, regs)), spilled=spilled}
| I.INSTR(i) => I.INSTR(hppaDef(i))
| I.COPY{k as CB.GP, sz, dst, src, tmp} =>
I.COPY{k=k, sz=sz, dst=map replc dst, src=src, tmp=ea tmp}
| _ => error "rewriteDef"
end
fun frewriteUse(instr, fs, ft) = let
fun replc r = if CB.sameColor(r,fs) then ft else r
fun hppaUse(instr) =
(case instr
of I.FSTORE{fst, b, d, r, mem} =>
I.FSTORE{fst=fst, b=b, d=d, r=replc r, mem=mem}
| I.FSTOREX{fstx, b, x, r, mem} =>
I.FSTOREX{fstx=fstx, b=b, x=x, r=replc r, mem=mem}
| I.FARITH{fa, r1, r2, t} =>
I.FARITH{fa=fa, r1=replc r1, r2=replc r2, t=t}
| I.FUNARY{fu, f, t} => I.FUNARY{fu=fu, f=replc f, t=t}
| I.FCNV{fcnv, f, t} => I.FCNV{fcnv=fcnv, f=replc f, t=t}
| I.FBRANCH{cc,fmt,f1,f2,t,f,n,long} =>
I.FBRANCH{cc=cc,fmt=fmt,f1=replc f1,f2=replc f2,t=t,f=f,n=n,long=long}
| I.BLE{d, b, sr, t, defs, uses, cutsTo, mem} =>
I.BLE{d=d, b=b, sr=sr, t=replc t, defs=defs,
uses=CS.map {from=fs,to=ft} uses, cutsTo=cutsTo, mem=mem}
| I.BL{lab, t, defs, uses, mem, cutsTo, n} =>
I.BL{lab=lab, t=t, defs=defs, cutsTo=cutsTo,
uses=CS.map {from=fs,to=ft} uses, mem=mem, n=n}
| _ => instr
(*esac*))
in
case instr
of (I.ANNOTATION{i, ...}) => frewriteUse(i, fs, ft)
| I.INSTR(i) => I.INSTR(hppaUse(i))
| I.LIVE{regs, spilled} =>
I.LIVE{regs=C.addFreg(ft, C.rmvFreg(fs, regs)), spilled=spilled}
| I.COPY{k as CB.FP, sz, dst, src, tmp} =>
I.COPY{k=k, sz=sz, dst=dst, src=map replc src, tmp=tmp}
| _ => error "frewriteUse"
end
fun frewriteDef(instr, fs, ft) = let
fun replc r = if CB.sameColor(r,fs) then ft else r
fun ea (SOME(I.FDirect f)) = SOME(I.FDirect(replc f))
| ea x = x
fun hppaDef(instr) =
(case instr
of I.FLOAD{fl, b, d, t, mem} =>
I.FLOAD{fl=fl, b=b, d=d, t=replc t,mem=mem}
| I.FLOADX{flx, b, x, t, mem} =>
I.FLOADX{flx=flx, b=b, x=x, t=replc t, mem=mem}
| I.FARITH {fa, r1, r2, t} => I.FARITH{fa=fa, r1=r1, r2=r2, t=replc t}
| I.FUNARY{fu, f, t} => I.FUNARY{fu=fu, f=f, t=replc t}
| I.FCNV{fcnv, f, t} => I.FCNV{fcnv=fcnv, f=f, t=replc t}
| I.BLE{d, b, sr, t, defs, uses, cutsTo, mem} =>
I.BLE{d=d, b=b, sr=sr, t=replc t, cutsTo=cutsTo,
defs=CS.map {from=fs,to=ft} defs, uses=uses, mem=mem}
| I.BL{lab, t, defs, uses, mem, cutsTo, n} =>
I.BL{lab=lab, t=t, cutsTo=cutsTo,
defs=CS.map {from=fs,to=ft} defs, uses=uses, mem=mem, n=n}
| _ => instr
(*esac*))
in
case instr
of (I.ANNOTATION{i, ...}) => frewriteDef(i, fs, ft)
| I.INSTR(i) => I.INSTR(hppaDef(i))
| I.KILL{regs, spilled} =>
I.KILL{regs=C.addFreg(ft, C.rmvFreg(fs, regs)), spilled=spilled}
| I.COPY{k as CB.FP, sz, dst, src, tmp} =>
I.COPY{k=k, sz=sz, dst=map replc dst, src=src, tmp=ea tmp}
| _ => error "frewriteDef"
end
end
|
