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|
(* WARNING: this is generated by running 'nowhere x86Peephole.peep'.
* Do not edit this file directly.
* Version 1.2.2
*)
(*#line 20.1 "x86Peephole.peep"*)
functor X86Peephole(
(*#line 21.5 "x86Peephole.peep"*)
structure Instr : X86INSTR
(*#line 22.5 "x86Peephole.peep"*)
structure Eval : MLTREE_EVAL
(*#line 23.7 "x86Peephole.peep"*)
(* sharing Instr.T = Eval.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
): PEEPHOLE =
struct
(*#line 26.4 "x86Peephole.peep"*)
structure I = Instr
(*#line 27.4 "x86Peephole.peep"*)
structure C = I.C
(*#line 28.4 "x86Peephole.peep"*)
structure CBase = CellsBasis
(*#line 31.4 "x86Peephole.peep"*)
fun peephole instrs =
let
(*#line 32.8 "x86Peephole.peep"*)
fun isStackPtr (I.Direct r) = CBase.sameColor (r, C.esp)
| isStackPtr _ = false
(*#line 35.8 "x86Peephole.peep"*)
fun isZeroLE le = (((Eval.valueOf le) = 0) handle _ => false
)
(*#line 37.8 "x86Peephole.peep"*)
fun isZero (I.Immed n) = n = 0
| isZero (I.ImmedLabel le) = isZeroLE le
| isZero _ = false
(*#line 41.8 "x86Peephole.peep"*)
fun isZeroOpt NONE = true
| isZeroOpt (SOME opn) = isZero opn
(*#line 44.8 "x86Peephole.peep"*)
fun loop (code, instrs) =
let val v_34 = code
fun state_9 (v_0, v_3) =
let val i = v_0
and rest = v_3
in loop (rest, i :: instrs)
end
fun state_22 (v_0, v_17, v_3) =
let val le = v_17
and rest = v_3
in (if (isZeroLE le)
then (loop (rest, instrs))
else (state_9 (v_0, v_3)))
end
fun state_51 (v_0, v_1, v_2, v_3) =
(case v_1 of
I.Direct v_26 =>
let val dst = v_1
and rest = v_3
and src = v_2
in (if (isZero src)
then (loop (rest, (I.binary {binOp=I.XORL, src=dst, dst=dst}) :: instrs))
else (state_9 (v_0, v_3)))
end
| _ => state_9 (v_0, v_3)
)
in
(case v_34 of
op :: v_33 =>
let val (v_0, v_3) = v_33
in
(case v_0 of
I.INSTR v_32 =>
(case v_32 of
I.BINARY v_19 =>
let val {binOp=v_31, dst=v_1, src=v_2, ...} = v_19
in
(case v_31 of
I.ADDL =>
(case v_2 of
I.Immed v_17 =>
(case v_1 of
I.Direct v_26 =>
(case v_3 of
op :: v_14 =>
let val (v_13, v_4) = v_14
in
(case v_13 of
I.INSTR v_12 =>
(case v_12 of
I.BINARY v_11 =>
let val {binOp=v_10, dst=v_9, src=v_8, ...} = v_11
in
(case v_10 of
I.SUBL =>
(case v_9 of
I.Direct v_5 =>
(case v_8 of
I.Immed v_7 =>
let val d_i = v_26
and d_j = v_5
and m = v_7
and n = v_17
and rest = v_4
in (if ((CBase.sameColor (d_i, C.esp)) andalso (CBase.sameColor (d_j, C.esp)))
then (if (m = n)
then (loop (rest, instrs))
else (if (m < n)
then (loop (rest, (I.binary {binOp=I.ADDL, src=I.Immed (n - m), dst=I.Direct C.esp}) :: instrs))
else (loop (rest, (I.binary {binOp=I.SUBL, src=I.Immed (m - n), dst=I.Direct C.esp}) :: instrs))))
else (state_9 (v_0, v_3)))
end
| _ => state_9 (v_0, v_3)
)
| _ => state_9 (v_0, v_3)
)
| _ => state_9 (v_0, v_3)
)
end
| _ => state_9 (v_0, v_3)
)
| _ => state_9 (v_0, v_3)
)
end
| nil => state_9 (v_0, v_3)
)
| _ => state_9 (v_0, v_3)
)
| I.ImmedLabel v_17 => state_22 (v_0, v_17, v_3)
| _ => state_9 (v_0, v_3)
)
| I.SUBL =>
(case v_2 of
I.Immed v_17 =>
(case v_1 of
I.Direct v_26 =>
(case v_17 of
4 =>
(case v_3 of
op :: v_14 =>
let val (v_13, v_4) = v_14
in
(case v_13 of
I.INSTR v_12 =>
(case v_12 of
I.MOVE v_11 =>
let val {dst=v_9, mvOp=v_28, src=v_8, ...} = v_11
in
(case v_9 of
I.Displace v_5 =>
let val {base=v_27, disp=v_30, ...} = v_5
in
(case v_30 of
I.Immed v_29 =>
(case v_29 of
0 =>
(case v_28 of
I.MOVL =>
let val base = v_27
and dst_i = v_26
and rest = v_4
and src = v_8
in (if (((CBase.sameColor (base, C.esp)) andalso (CBase.sameColor (dst_i, C.esp))) andalso (not (isStackPtr src)))
then (loop (rest, (I.pushl src) :: instrs))
else (state_9 (v_0, v_3)))
end
| _ => state_9 (v_0, v_3)
)
| _ => state_9 (v_0, v_3)
)
| _ => state_9 (v_0, v_3)
)
end
| _ => state_9 (v_0, v_3)
)
end
| _ => state_9 (v_0, v_3)
)
| _ => state_9 (v_0, v_3)
)
end
| nil => state_9 (v_0, v_3)
)
| _ => state_9 (v_0, v_3)
)
| _ => state_9 (v_0, v_3)
)
| I.ImmedLabel v_17 => state_22 (v_0, v_17, v_3)
| _ => state_9 (v_0, v_3)
)
| _ => state_9 (v_0, v_3)
)
end
| I.LEA v_19 =>
let val {addr=v_25, r32=v_20, ...} = v_19
in
(case v_25 of
I.Displace v_24 =>
let val {base=v_22, disp=v_23, ...} = v_24
in
(case v_23 of
I.ImmedLabel v_21 =>
let val base = v_22
and le = v_21
and r32 = v_20
and rest = v_3
in (if ((isZeroLE le) andalso (CBase.sameColor (r32, base)))
then (loop (rest, instrs))
else (state_9 (v_0, v_3)))
end
| _ => state_9 (v_0, v_3)
)
end
| _ => state_9 (v_0, v_3)
)
end
| I.MOVE v_19 =>
let val {dst=v_1, mvOp=v_18, src=v_2, ...} = v_19
in
(case v_18 of
I.MOVL =>
(case v_2 of
I.Displace v_17 =>
let val {base=v_6, disp=v_16, ...} = v_17
in
(case v_16 of
I.Immed v_15 =>
(case v_15 of
0 =>
(case v_3 of
op :: v_14 =>
let val (v_13, v_4) = v_14
in
(case v_13 of
I.INSTR v_12 =>
(case v_12 of
I.BINARY v_11 =>
let val {binOp=v_10, dst=v_9, src=v_8, ...} = v_11
in
(case v_10 of
I.ADDL =>
(case v_9 of
I.Direct v_5 =>
(case v_8 of
I.Immed v_7 =>
(case v_7 of
4 =>
let val base = v_6
and dst = v_1
and dst_i = v_5
and rest = v_4
in (if (((CBase.sameColor (base, C.esp)) andalso (CBase.sameColor (dst_i, C.esp))) andalso (not (isStackPtr dst)))
then (loop (rest, (I.pop dst) :: instrs))
else (state_51 (v_0, v_1, v_2, v_3)))
end
| _ => state_51 (v_0, v_1, v_2, v_3)
)
| _ => state_51 (v_0, v_1, v_2, v_3)
)
| _ => state_51 (v_0, v_1, v_2, v_3)
)
| _ => state_51 (v_0, v_1, v_2, v_3)
)
end
| _ => state_51 (v_0, v_1, v_2, v_3)
)
| _ => state_51 (v_0, v_1, v_2, v_3)
)
end
| nil => state_51 (v_0, v_1, v_2, v_3)
)
| _ => state_51 (v_0, v_1, v_2, v_3)
)
| _ => state_51 (v_0, v_1, v_2, v_3)
)
end
| _ => state_51 (v_0, v_1, v_2, v_3)
)
| _ => state_9 (v_0, v_3)
)
end
| _ => state_9 (v_0, v_3)
)
| _ => state_9 (v_0, v_3)
)
end
| nil => instrs
)
end
in loop (instrs, [])
end
end
|
