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Diffstat (limited to 'powerpc/SelectLong.vp')
-rw-r--r-- | powerpc/SelectLong.vp | 335 |
1 files changed, 334 insertions, 1 deletions
diff --git a/powerpc/SelectLong.vp b/powerpc/SelectLong.vp index cc7a38f6..5f13774b 100644 --- a/powerpc/SelectLong.vp +++ b/powerpc/SelectLong.vp @@ -18,4 +18,337 @@ Require Import AST Integers Floats. Require Import Op CminorSel. Require Import SelectOp SplitLong. -(** This file is empty because we use the default implementation provided in [SplitLong]. *) +Local Open Scope cminorsel_scope. +Local Open Scope string_scope. + +Section SELECT. + +Context {hf: helper_functions}. + +Definition longconst (n: int64) : expr := + if Archi.splitlong then SplitLong.longconst n else Eop (Olongconst n) Enil. + +Definition is_longconst (e: expr) := + if Archi.splitlong then SplitLong.is_longconst e else + match e with + | Eop (Olongconst n) Enil => Some n + | _ => None + end. + +Definition intoflong (e: expr) := + if Archi.splitlong then SplitLong.intoflong e else + match is_longconst e with + | Some n => Eop (Ointconst (Int.repr (Int64.unsigned n))) Enil + | None => Eop Olowlong (e ::: Enil) + end. + +Definition longofint (e: expr) := + if Archi.splitlong then SplitLong.longofint e else + match is_intconst e with + | Some n => longconst (Int64.repr (Int.signed n)) + | None => Eop Ocast32signed (e ::: Enil) + end. + +Definition longofintu (e: expr) := + if Archi.splitlong then SplitLong.longofintu e else + match is_intconst e with + | Some n => longconst (Int64.repr (Int.unsigned n)) + | None => Eop Ocast32unsigned (e ::: Enil) + end. + +Nondetfunction notl (e: expr) := + if Archi.splitlong then SplitLong.notl e else + match e with + | Eop (Olongconst n) Enil => longconst (Int64.not n) + | Eop Onotl (t1:::Enil) => t1 + | _ => Eop Onotl (e:::Enil) + end. + +Nondetfunction andlimm (n1: int64) (e2: expr) := + if Int64.eq n1 Int64.zero then longconst Int64.zero else + if Int64.eq n1 Int64.mone then e2 else + match e2 with + | Eop (Olongconst n2) Enil => + longconst (Int64.and n1 n2) + | Eop (Oandlimm n2) (t2:::Enil) => + Eop (Oandlimm (Int64.and n1 n2)) (t2:::Enil) + | Eop (Orolml amount2 mask2) (t2:::Enil) => + Eop (Orolml amount2 (Int64.and n1 mask2)) (t2:::Enil) + | _ => + Eop (Oandlimm n1) (e2:::Enil) + end. + +Nondetfunction andl (e1: expr) (e2: expr) := + if Archi.splitlong then SplitLong.andl e1 e2 else + match e1, e2 with + | Eop (Olongconst n1) Enil, t2 => andlimm n1 t2 + | t1, Eop (Olongconst n2) Enil => andlimm n2 t1 + | _, _ => Eop Oandl (e1:::e2:::Enil) + end. + +Nondetfunction orlimm (n1: int64) (e2: expr) := + if Int64.eq n1 Int64.zero then e2 else + if Int64.eq n1 Int64.mone then longconst Int64.mone else + match e2 with + | Eop (Olongconst n2) Enil => longconst (Int64.or n1 n2) + | Eop (Oorlimm n2) (t2:::Enil) => Eop (Oorlimm (Int64.or n1 n2)) (t2:::Enil) + | _ => Eop (Oorlimm n1) (e2:::Enil) + end. + +Nondetfunction orl (e1: expr) (e2: expr) := + if Archi.splitlong then SplitLong.orl e1 e2 else + match e1, e2 with + | Eop (Orolml amount1 mask1) (t1:::Enil), Eop (Orolml amount2 mask2) (t2:::Enil) => + if Int.eq amount1 amount2 && same_expr_pure t1 t2 + then Eop (Orolml amount1 (Int64.or mask1 mask2)) (t1:::Enil) + else Eop Oorl (e1:::e2:::Enil) + | Eop (Olongconst n1) Enil, t2 => orlimm n1 t2 + | t1, Eop (Olongconst n2) Enil => orlimm n2 t1 + | _, _ => Eop Oorl (e1:::e2:::Enil) + end. + +Nondetfunction xorlimm (n1: int64) (e2: expr) := + if Int64.eq n1 Int64.zero then e2 else + if Int64.eq n1 Int64.mone then notl e2 else + match e2 with + | Eop (Olongconst n2) Enil => longconst (Int64.xor n1 n2) + | Eop (Oxorlimm n2) (t2:::Enil) => Eop (Oxorlimm (Int64.xor n1 n2)) (t2:::Enil) + | Eop Onotl (t2:::Enil) => Eop (Oxorlimm (Int64.not n1)) (t2:::Enil) + | _ => Eop (Oxorlimm n1) (e2:::Enil) + end. + +Nondetfunction xorl (e1: expr) (e2: expr) := + if Archi.splitlong then SplitLong.xorl e1 e2 else + match e1, e2 with + | Eop (Olongconst n1) Enil, t2 => xorlimm n1 t2 + | t1, Eop (Olongconst n2) Enil => xorlimm n2 t1 + | _, _ => Eop Oxorl (e1:::e2:::Enil) + end. + +Nondetfunction rolml (e1: expr) (amount2: int) (mask2: int64) := + if Int.eq amount2 Int.zero then andlimm mask2 e1 else + match e1 with + | Eop (Olongconst n1) Enil => + longconst (Int64.and (Int64.rol' n1 amount2) mask2) + | Eop (Orolml amount1 mask1) (t1:::Enil) => + Eop (Orolml (Int.modu (Int.add amount1 amount2) Int64.iwordsize') + (Int64.and (Int64.rol' mask1 amount2) mask2)) + (t1:::Enil) + | Eop (Oandlimm mask1) (t1:::Enil) => + Eop (Orolml amount2 + (Int64.and (Int64.rol' mask1 amount2) mask2)) + (t1:::Enil) + | _ => + Eop (Orolml amount2 mask2) (e1:::Enil) + end. + +Definition shllimm (e1: expr) (n: int) := + if Archi.splitlong then SplitLong.shllimm e1 n else + if Int.eq n Int.zero then e1 else + if negb (Int.ltu n Int64.iwordsize') then + Eop Oshll (e1:::Eop (Ointconst n) Enil:::Enil) + else + let n' := Int64.repr (Int.unsigned n) in + rolml e1 n (Int64.shl Int64.mone n'). + +Definition shrluimm (e1: expr) (n: int) := + if Archi.splitlong then SplitLong.shrluimm e1 n else + if Int.eq n Int.zero then e1 else + if negb (Int.ltu n Int64.iwordsize') then + Eop Oshrlu (e1:::Eop (Ointconst n) Enil:::Enil) + else + let n' := Int64.repr (Int.unsigned n) in + rolml e1 (Int.sub Int64.iwordsize' n) (Int64.shru Int64.mone n'). + +Nondetfunction shrlimm (e1: expr) (n: int) := + if Archi.splitlong then SplitLong.shrlimm e1 n else + if Int.eq n Int.zero then e1 else + if negb (Int.ltu n Int64.iwordsize') then + Eop Oshrl (e1:::Eop (Ointconst n) Enil:::Enil) + else + match e1 with + | Eop (Olongconst n1) Enil => + Eop (Olongconst(Int64.shr' n1 n)) Enil + | Eop (Oshrlimm n1) (t1:::Enil) => + if Int.ltu (Int.add n n1) Int64.iwordsize' + then Eop (Oshrlimm (Int.add n n1)) (t1:::Enil) + else Eop (Oshrlimm n) (e1:::Enil) + | _ => + Eop (Oshrlimm n) (e1:::Enil) + end. + +Definition shll (e1: expr) (e2: expr) := + if Archi.splitlong then SplitLong.shll e1 e2 else + match is_intconst e2 with + | Some n2 => shllimm e1 n2 + | None => Eop Oshll (e1:::e2:::Enil) + end. + +Definition shrl (e1: expr) (e2: expr) := + if Archi.splitlong then SplitLong.shrl e1 e2 else + match is_intconst e2 with + | Some n2 => shrlimm e1 n2 + | None => Eop Oshrl (e1:::e2:::Enil) + end. + +Definition shrlu (e1: expr) (e2: expr) := + if Archi.splitlong then SplitLong.shrlu e1 e2 else + match is_intconst e2 with + | Some n2 => shrluimm e1 n2 + | _ => Eop Oshrlu (e1:::e2:::Enil) + end. + +Nondetfunction addlimm (n: int64) (e: expr) := + if Int64.eq n Int64.zero then e else + match e with + | Eop (Olongconst m) Enil => longconst (Int64.add m n) + | Eop (Oaddlimm m) (t ::: Enil) => Eop (Oaddlimm(Int64.add m n)) (t ::: Enil) + | _ => Eop (Oaddlimm n) (e ::: Enil) + end. + +Nondetfunction addl (e1: expr) (e2: expr) := + if Archi.splitlong then SplitLong.addl e1 e2 else + match e1, e2 with + | Eop (Olongconst n1) Enil, t2 => addlimm n1 t2 + | t1, Eop (Olongconst n2) Enil => addlimm n2 t1 + | Eop (Oaddlimm n1) (t1:::Enil), Eop (Oaddlimm n2) (t2:::Enil) => + addlimm (Int64.add n1 n2) (Eop Oaddl (t1:::t2:::Enil)) + | Eop (Oaddlimm n1) (t1:::Enil), t2 => + addlimm n1 (Eop Oaddl (t1:::t2:::Enil)) + | t1, Eop (Oaddlimm n2) (t2:::Enil) => + addlimm n2 (Eop Oaddl (t1:::t2:::Enil)) + | _, _ => + Eop Oaddl (e1:::e2:::Enil) + end. + +Definition negl (e: expr) := + if Archi.splitlong then SplitLong.negl e else + match is_longconst e with + | Some n => longconst (Int64.neg n) + | None => Eop Onegl (e ::: Enil) + end. + +Nondetfunction subl (e1: expr) (e2: expr) := + if Archi.splitlong then SplitLong.subl e1 e2 else + match e1, e2 with + | t1, Eop (Olongconst n2) Enil => addlimm (Int64.neg n2) t1 + | _, _ => + Eop Osubl (e1:::e2:::Enil) + end. + +Definition mullimm_base (n1: int64) (e2: expr) := + match Int64.one_bits' n1 with + | i :: nil => + shllimm e2 i + | i :: j :: nil => + Elet e2 (addl (shllimm (Eletvar 0) i) (shllimm (Eletvar 0) j)) + | _ => + Eop Omull (e2:::longconst n1:::Enil) + end. + +Nondetfunction mullimm (n1: int64) (e2: expr) := + if Archi.splitlong then SplitLong.mullimm n1 e2 + else if Int64.eq n1 Int64.zero then longconst Int64.zero + else if Int64.eq n1 Int64.one then e2 + else match e2 with + | Eop (Olongconst n2) Enil => longconst (Int64.mul n1 n2) + | _ => mullimm_base n1 e2 + end. + +Nondetfunction mull (e1: expr) (e2: expr) := + if Archi.splitlong then SplitLong.mull e1 e2 else + match e1, e2 with + | Eop (Olongconst n1) Enil, t2 => mullimm n1 t2 + | t1, Eop (Olongconst n2) Enil => mullimm n2 t1 + | _, _ => Eop Omull (e1:::e2:::Enil) + end. + +Definition mullhu (e1: expr) (n2: int64) := + if Archi.splitlong then SplitLong.mullhu e1 n2 else + Eop Omullhu (e1 ::: longconst n2 ::: Enil). + +Definition mullhs (e1: expr) (n2: int64) := + if Archi.splitlong then SplitLong.mullhs e1 n2 else + Eop Omullhs (e1 ::: longconst n2 ::: Enil). + +Definition shrxlimm (e: expr) (n: int) := + if Archi.splitlong then SplitLong.shrxlimm e n else + if Int.eq n Int.zero then e else Eop (Oshrxlimm n) (e ::: Enil). + + +Definition modl_aux (divop: operation) (e1 e2: expr) := + Elet e1 + (Elet (lift e2) + (Eop Osubl (Eletvar 1 ::: + Eop Omull (Eop divop (Eletvar 1 ::: Eletvar 0 ::: Enil) ::: + Eletvar 0 ::: + Enil) ::: + Enil))). + +Definition divls_base (e1: expr) (e2: expr) := + if Archi.splitlong then SplitLong.divls_base e1 e2 else Eop Odivl (e1:::e2:::Enil). + +Definition divlu_base (e1: expr) (e2: expr) := + if Archi.splitlong then SplitLong.divlu_base e1 e2 else Eop Odivlu (e1:::e2:::Enil). + +Definition modls_base (e1: expr) (e2: expr) := + if Archi.splitlong then SplitLong.modls_base e1 e2 else + let default := modl_aux Odivl e1 e2 in + match is_longconst e1, is_longconst e2 with + | Some n1, Some n2 => + if Int64.eq Int64.zero n2 then default else + if Int64.eq n1 (Int64.repr Int64.min_signed) && Int64.eq n2 Int64.mone then default + else longconst (Int64.mods n1 n2) + | _, _ => default + end. + +Definition modlu_base (e1 e2: expr) := + if Archi.splitlong then SplitLong.modlu_base e1 e2 else + let default := modl_aux Odivlu e1 e2 in + match is_longconst e1, is_longconst e2 with + | Some n1, Some n2 => + if Int64.eq Int64.zero n2 + then default + else longconst (Int64.modu n1 n2) + | _, Some n2 => + match Int64.is_power2 n2 with + | Some _ => andlimm (Int64.sub n2 Int64.one) e1 + | _ => default + end + | _, _ => default + end. + +Definition cmplu (c: comparison) (e1 e2: expr) := + if Archi.splitlong then SplitLong.cmplu c e1 e2 else + match is_longconst e1, is_longconst e2 with + | Some n1, Some n2 => + Eop (Ointconst (if Int64.cmpu c n1 n2 then Int.one else Int.zero)) Enil + | Some n1, None => Eop (Ocmp (Ccompluimm (swap_comparison c) n1)) (e2:::Enil) + | None, Some n2 => Eop (Ocmp (Ccompluimm c n2)) (e1:::Enil) + | None, None => Eop (Ocmp (Ccomplu c)) (e1:::e2:::Enil) + end. + +Definition cmpl (c: comparison) (e1 e2: expr) := + if Archi.splitlong then SplitLong.cmpl c e1 e2 else + match is_longconst e1, is_longconst e2 with + | Some n1, Some n2 => + Eop (Ointconst (if Int64.cmp c n1 n2 then Int.one else Int.zero)) Enil + | Some n1, None => Eop (Ocmp (Ccomplimm (swap_comparison c) n1)) (e2:::Enil) + | None, Some n2 => Eop (Ocmp (Ccomplimm c n2)) (e1:::Enil) + | None, None => Eop (Ocmp (Ccompl c)) (e1:::e2:::Enil) + end. + +Definition longoffloat (e: expr) := + if Archi.splitlong + then SplitLong.longoffloat e + else Eop Olongoffloat (e:::Enil). + +Definition floatoflong (e: expr) := + if Archi.splitlong + then SplitLong.floatoflong e + else Eop Ofloatoflong (e:::Enil). + +Definition longofsingle (arg: expr) := + longoffloat (floatofsingle arg). + +End SELECT. |