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functor PPCJumps
(structure Instr: PPCINSTR
structure Shuffle : PPCSHUFFLE (* where I = Instr *)
where type I.Constant.const = Instr.Constant.const
and type I.Region.region = Instr.Region.region
and type I.T.Basis.cond = Instr.T.Basis.cond
and type I.T.Basis.div_rounding_mode = Instr.T.Basis.div_rounding_mode
and type I.T.Basis.ext = Instr.T.Basis.ext
and type I.T.Basis.fcond = Instr.T.Basis.fcond
and type I.T.Basis.rounding_mode = Instr.T.Basis.rounding_mode
and type ('s,'r,'f,'c) I.T.Extension.ccx = ('s,'r,'f,'c) Instr.T.Extension.ccx
and type ('s,'r,'f,'c) I.T.Extension.fx = ('s,'r,'f,'c) Instr.T.Extension.fx
and type ('s,'r,'f,'c) I.T.Extension.rx = ('s,'r,'f,'c) Instr.T.Extension.rx
and type ('s,'r,'f,'c) I.T.Extension.sx = ('s,'r,'f,'c) Instr.T.Extension.sx
and type I.T.I.div_rounding_mode = Instr.T.I.div_rounding_mode
and type I.T.ccexp = Instr.T.ccexp
and type I.T.fexp = Instr.T.fexp
(* and type I.T.labexp = Instr.T.labexp *)
and type I.T.mlrisc = Instr.T.mlrisc
and type I.T.oper = Instr.T.oper
and type I.T.rep = Instr.T.rep
and type I.T.rexp = Instr.T.rexp
and type I.T.stm = Instr.T.stm
and type I.arith = Instr.arith
and type I.arithi = Instr.arithi
and type I.bit = Instr.bit
and type I.bo = Instr.bo
and type I.ccarith = Instr.ccarith
and type I.cmp = Instr.cmp
and type I.ea = Instr.ea
and type I.farith = Instr.farith
and type I.farith3 = Instr.farith3
and type I.fcmp = Instr.fcmp
and type I.fload = Instr.fload
and type I.fstore = Instr.fstore
and type I.funary = Instr.funary
and type I.instr = Instr.instr
and type I.instruction = Instr.instruction
and type I.load = Instr.load
and type I.operand = Instr.operand
and type I.rotate = Instr.rotate
and type I.rotatei = Instr.rotatei
and type I.spr = Instr.spr
and type I.store = Instr.store
and type I.unary = Instr.unary
and type I.xerbit = Instr.xerbit
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
) : SDI_JUMPS =
struct
structure I = Instr
structure C = I.C
structure Const = I.Constant
structure CB = CellsBasis
fun error msg = MLRiscErrorMsg.error("PPCJumps",msg)
val warn_long_branch =
MLRiscControl.mkFlag ("ppc-warn-long-branch",
"whether to warn about long form of branch")
val branchDelayedArch = false
fun isSdi(I.ANNOTATION{i,...}) =isSdi i
| isSdi(I.LIVE _) = true
| isSdi(I.KILL _) = true
| isSdi(I.COPY _) = true
| isSdi(I.INSTR instr) = let
fun operand(I.LabelOp _) = true
| operand _ = false
in
case instr
of I.L{d, ...} => operand d
| I.LF{d, ...} => operand d
| I.ST{d, ...} => operand d
| I.STF{d, ...} => operand d
| I.ARITHI{im, ...} => operand im
| I.ROTATEI{sh, ...} => operand sh
| I.COMPARE{rb, ...} => operand rb
| I.TW{si, ...} => operand si
| I.TD{si, ...} => operand si
| I.BC{addr, ...} => operand addr
| _ => false
end
(* max Size is not used for the PPC span dependency analysis. *)
fun maxSize _ = error "maxSize"
fun minSize(I.LIVE _) = 0
| minSize(I.KILL _) = 0
| minSize(I.COPY _) = 0
| minSize(I.ANNOTATION{i,...}) = minSize i
| minSize _ = 4
fun sdiSize(I.ANNOTATION{i, ...}, labmap, loc) = sdiSize(i, labmap, loc)
| sdiSize(I.LIVE _, _, _) = 0
| sdiSize(I.KILL _, _, _) = 0
| sdiSize(I.COPY{k=CB.GP, src, dst, tmp, ...}, _, _) =
4 * length(Shuffle.shuffle{tmp=tmp, dst=dst, src=src})
| sdiSize(I.COPY{k=CB.FP, src, dst, tmp, ...}, _, _) =
4 * length(Shuffle.shufflefp{src=src, dst=dst, tmp=tmp})
| sdiSize(I.INSTR instr, labmap, loc) = let
fun signed16 n = ~32768 <= n andalso n < 32768
fun signed12 n = ~2048 <= n andalso n < 2048
fun signed14 n = ~8192 <= n andalso n < 8192
fun unsigned16 n = 0 <= n andalso n < 65536
fun unsigned5 n = 0 <=n andalso n < 32
fun operand(I.LabelOp le, inRange, lo, hi) =
if inRange(MLTreeEval.valueOf le) then lo else hi
| operand _ = error "sdiSize:operand"
in
case instr
of I.L{ld=(I.LBZ | I.LHZ | I.LHA | I.LWZ),d,...} =>
operand(d, signed16, 4, 8)
| I.L{d,...} => operand(d, signed12, 4, 8)
| I.LF{ld=(I.LFS | I.LFD), d, ...} => operand(d, signed16, 4, 8)
| I.LF{d, ...} => operand(d, signed12, 4, 8)
| I.ST{st=(I.STB | I.STH | I.STW), d, ...} => operand(d, signed16, 4, 8)
| I.ST{d, ...} => operand(d, signed12, 4, 8)
| I.STF{st=(I.STFS | I.STFD), d, ...} => operand(d, signed16, 4, 8)
| I.STF{d, ...} => operand(d, signed12, 4, 8)
| I.ARITHI{oper, im, ...} =>
(case oper
of I.ADDI => operand(im, signed16, 4, 8)
| (I.ADDIS | I.SUBFIC | I.MULLI) => operand(im, signed16, 4, 12)
| (I.ANDI_Rc | I.ANDIS_Rc | I.ORI | I.ORIS | I.XORI | I.XORIS) =>
operand(im, unsigned16, 4, 12)
| (I.SRAWI | I.SRADI) => operand(im, unsigned5, 4, 12)
(*esac*))
| I.ROTATEI{sh, ...} => error "sdiSize:ROTATE"
| I.COMPARE{cmp, rb, ...} =>
(case cmp
of I.CMP => operand(rb, signed16, 4, 12)
| I.CMPL => operand(rb, unsigned16, 4, 12)
(*esac*))
| I.BC{addr=I.LabelOp lexp, ...} =>
if signed14((MLTreeEval.valueOf lexp - loc) div 4) then 4 else 8
| _ => error "sdiSize"
end
| sdiSize _ = error "sdiSize"
fun valueOf(I.LabelOp lexp) = MLTreeEval.valueOf lexp
| valueOf _ = error "valueOf"
fun split opnd = let
val i = valueOf opnd
val w = Word.fromInt i
val hi = Word.~>>(w, 0w16)
val lo = Word.andb(w, 0w65535)
val (high,low) =
if lo < 0w32768 then (hi, lo) else (hi+0w1, lo-0w65536)
in (Word.toIntX high, Word.toIntX low)
end
fun cnv I.ADDI = I.ADD
| cnv I.SUBFIC = I.SUBF
| cnv I.MULLI = I.MULLW
| cnv I.ANDI_Rc = I.AND
| cnv I.ORI = I.OR
| cnv I.XORI = I.XOR
| cnv I.SRAWI = I.SRAW
| cnv I.SRADI = I.SRAD
| cnv _ = error "cnv"
fun expand(I.ANNOTATION{i, ...}, size, pos) = expand(i, size, pos)
| expand(I.LIVE _, _, _) = []
| expand(I.KILL _, _, _) = []
| expand(I.COPY{k=CB.GP, src, tmp, dst, ...}, _, _) =
Shuffle.shuffle{src=src, dst=dst, tmp=tmp}
| expand(I.COPY{k=CB.FP, src, tmp, dst, ...}, _, _) =
Shuffle.shufflefp{src=src, dst=dst, tmp=tmp}
| expand(instr as I.INSTR i, size, pos) =
(case i
of I.L{ld, rt, ra, d, mem} =>
(case size
of 4 => [I.l{ld=ld, rt=rt, ra=ra, d=I.ImmedOp(valueOf d), mem=mem}]
| 8 => let
val (hi,lo) = split d
in
[I.arithi{oper=I.ADDIS, rt=C.asmTmpR, ra=ra, im=I.ImmedOp hi},
I.l{ld=ld, rt=rt, ra=C.asmTmpR, d=I.ImmedOp lo, mem=mem}]
end
| _ => error "expand:L"
(*esac*))
| I.LF{ld, ft, ra, d, mem} =>
(case size
of 4 => [I.lf{ld=ld, ft=ft, ra=ra, d=I.ImmedOp(valueOf d), mem=mem}]
| 8 => let
val (hi,lo) = split d
in
[I.arithi{oper=I.ADDIS, rt=C.asmTmpR, ra=ra, im=I.ImmedOp hi},
I.lf{ld=ld, ft=ft, ra=C.asmTmpR, d=I.ImmedOp lo, mem=mem}]
end
| _ => error "expand:LF"
(*esac*))
| I.ST{st, rs, ra, d, mem} =>
(case size
of 4 => [I.st{st=st, rs=rs, ra=ra, d=I.ImmedOp(valueOf d), mem=mem}]
| 8 => let
val (hi,lo) = split d
in
[I.arithi{oper=I.ADDIS, rt=C.asmTmpR, ra=ra, im=I.ImmedOp hi},
I.st{st=st, rs=rs, ra=C.asmTmpR, d=I.ImmedOp lo, mem=mem}]
end
| _ => error "expand:ST"
(*esac*))
| I.STF{st, fs, ra, d, mem} =>
(case size
of 4 => [I.stf{st=st, fs=fs, ra=ra, d=I.ImmedOp(valueOf d), mem=mem}]
| 8 => let
val (hi,lo) = split d
in
[I.arithi{oper=I.ADDIS, rt=C.asmTmpR, ra=ra, im=I.ImmedOp hi},
I.stf{st=st, fs=fs, ra=C.asmTmpR, d=I.ImmedOp lo, mem=mem}]
end
| _ => error "expand:STF"
(*esac*))
| I.ARITHI{oper, rt, ra, im} =>
(case size
of 4 => [I.arithi{oper=oper, rt=rt, ra=ra, im=I.ImmedOp(valueOf im)}]
| 8 => let val (hi, lo) = split im (* must be ADDI *)
in [I.arithi{oper=I.ADDIS, rt=rt, ra=ra, im=I.ImmedOp hi},
I.arithi{oper=I.ADDI, rt=rt, ra=rt, im=I.ImmedOp lo}]
end
| 12 =>
let val (hi,lo) = split im
in [I.arithi{oper=I.ADDIS, rt=C.asmTmpR, ra=C.Reg CellsBasis.GP 0,
im=I.ImmedOp hi},
I.arithi{oper=I.ADDI,rt=C.asmTmpR,ra=C.asmTmpR,im=I.ImmedOp lo},
I.arith{oper=cnv oper, rt=rt, ra=ra, rb=C.asmTmpR, OE=false,
Rc=(oper = I.ANDI_Rc)}]
end
| _ => error "ARITHI"
(*esac*))
| I.BC{bo, bf, bit, fall, addr, LK} =>
(case size
of 4 => [instr]
| 8 => let
val newBO =
(case bo
of I.TRUE => I.FALSE
| I.FALSE => I.TRUE
| I.ALWAYS => error "expand:newBO:BC"
| I.COUNTER{eqZero, cond} => error "expand:newBO:COUNTER"
(*esac*))
in
if !warn_long_branch then
print("emiting long form of branch" ^ "\n")
else ();
[I.bc{bo=newBO, bf=bf, bit=bit, addr=fall, fall=fall, LK=false},
I.b{addr=addr, LK=LK}]
end
| _ => error "expand:BC"
(*esac*))
(* The other span dependent instructions are not generated *)
| I.COMPARE _ => error "expand:COMPARE"
| _ => error "expand"
(*esac*))
| expand _ = error "expand"
end
|
