(** Matching between continuations *)

Inductive match_cont : Csem.cont -> cont -> Prop :=
  | match_Kstop:
      match_cont Csem.Kstop Kstop
  | match_Kseq: forall s k ts tk,
      tr_stmt s ts ->
      match_cont k tk ->
      match_cont (Csem.Kseq s k) (Kseq ts tk)
  | match_Kwhile2: forall r s k s' ts tk,
      tr_if r Sskip Sbreak s' ->
      tr_stmt s ts ->
      match_cont k tk ->
      match_cont (Csem.Kwhile2 r s k)
                 (Kloop1 (Ssequence s' ts) Sskip tk)
  | match_Kdowhile1: forall r s k s' ts tk,
      tr_if r Sskip Sbreak s' ->
      tr_stmt s ts ->
      match_cont k tk ->
      match_cont (Csem.Kdowhile1 r s k)
                 (Kloop1 ts s' tk)
  | match_Kfor3: forall r s3 s k ts3 s' ts tk,
      tr_if r Sskip Sbreak s' ->
      tr_stmt s3 ts3 ->
      tr_stmt s ts ->
      match_cont k tk ->
      match_cont (Csem.Kfor3 r s3 s k)
                 (Kloop1 (Ssequence s' ts) ts3 tk)
  | match_Kfor4: forall r s3 s k ts3 s' ts tk,
      tr_if r Sskip Sbreak s' ->
      tr_stmt s3 ts3 ->
      tr_stmt s ts ->
      match_cont k tk ->
      match_cont (Csem.Kfor4 r s3 s k)
                 (Kloop2 (Ssequence s' ts) ts3 tk)
  | match_Kswitch2: forall k tk,
      match_cont k tk ->
      match_cont (Csem.Kswitch2 k) (Kswitch tk)
  | match_Kcall: forall f e C ty k optid tf le sl tk a dest tmps,
      tr_function f tf ->
      leftcontext RV RV C ->
      (forall v m, tr_top tge e (set_opttemp optid v le) m dest (C (Csyntax.Eval v ty)) sl a tmps) ->
      match_cont_exp dest a k tk ->
      match_cont (Csem.Kcall f e C ty k)
                 (Kcall optid tf e le (Kseqlist sl tk))
(*
  | match_Kcall_some: forall f e C ty k dst tf le sl tk a dest tmps,
      transl_function f = Errors.OK tf ->
      leftcontext RV RV C ->
      (forall v m, tr_top tge e (PTree.set dst v le) m dest (C (C.Eval v ty)) sl a tmps) ->
      match_cont_exp dest a k tk ->
      match_cont (Csem.Kcall f e C ty k)
                 (Kcall (Some dst) tf e le (Kseqlist sl tk))
*)

with match_cont_exp : destination -> expr -> Csem.cont -> cont -> Prop :=
  | match_Kdo: forall k a tk,
      match_cont k tk ->
      match_cont_exp For_effects a (Csem.Kdo k) tk
  | match_Kifthenelse_empty: forall a k tk,
      match_cont k tk ->
      match_cont_exp For_val a (Csem.Kifthenelse Csyntax.Sskip Csyntax.Sskip k) (Kseq Sskip tk)
  | match_Kifthenelse_1: forall a s1 s2 k ts1 ts2 tk,
      tr_stmt s1 ts1 -> tr_stmt s2 ts2 ->
      match_cont k tk ->
      match_cont_exp For_val a (Csem.Kifthenelse s1 s2 k) (Kseq (Sifthenelse a ts1 ts2) tk)
  | match_Kwhile1: forall r s k s' a ts tk,
      tr_if r Sskip Sbreak s' ->
      tr_stmt s ts ->
      match_cont k tk ->
      match_cont_exp For_val a
         (Csem.Kwhile1 r s k)
         (Kseq (makeif a Sskip Sbreak)
           (Kseq ts (Kloop1 (Ssequence s' ts) Sskip tk)))
  | match_Kdowhile2: forall r s k s' a ts tk,
      tr_if r Sskip Sbreak s' ->
      tr_stmt s ts ->
      match_cont k tk ->
      match_cont_exp For_val a
        (Csem.Kdowhile2 r s k)
        (Kseq (makeif a Sskip Sbreak) (Kloop2 ts s' tk))
  | match_Kfor2: forall r s3 s k s' a ts3 ts tk,
      tr_if r Sskip Sbreak s' ->
      tr_stmt s3 ts3 ->
      tr_stmt s ts ->
      match_cont k tk ->
      match_cont_exp For_val a
        (Csem.Kfor2 r s3 s k)
        (Kseq (makeif a Sskip Sbreak)
          (Kseq ts (Kloop1 (Ssequence s' ts) ts3 tk)))
  | match_Kswitch1: forall ls k a tls tk,
      tr_lblstmts ls tls ->
      match_cont k tk ->
      match_cont_exp For_val a (Csem.Kswitch1 ls k) (Kseq (Sswitch a tls) tk)
  | match_Kreturn: forall k a tk,
      match_cont k tk ->
      match_cont_exp For_val a (Csem.Kreturn k) (Kseq (Sreturn (Some a)) tk).(** Matching between continuations *)

Inductive match_cont : Csem.cont -> cont -> Prop :=
  | match_Kstop:
      match_cont Csem.Kstop Kstop
  | match_Kseq: forall s k ts tk,
      tr_stmt s ts ->
      match_cont k tk ->
      match_cont (Csem.Kseq s k) (Kseq ts tk)
  | match_Kwhile2: forall r s k s' ts tk,
      tr_if r Sskip Sbreak s' ->
      tr_stmt s ts ->
      match_cont k tk ->
      match_cont (Csem.Kwhile2 r s k)
                 (Kloop1 (Ssequence s' ts) Sskip tk)
  | match_Kdowhile1: forall r s k s' ts tk,
      tr_if r Sskip Sbreak s' ->
      tr_stmt s ts ->
      match_cont k tk ->
      match_cont (Csem.Kdowhile1 r s k)
                 (Kloop1 ts s' tk)
  | match_Kfor3: forall r s3 s k ts3 s' ts tk,
      tr_if r Sskip Sbreak s' ->
      tr_stmt s3 ts3 ->
      tr_stmt s ts ->
      match_cont k tk ->
      match_cont (Csem.Kfor3 r s3 s k)
                 (Kloop1 (Ssequence s' ts) ts3 tk)
  | match_Kfor4: forall r s3 s k ts3 s' ts tk,
      tr_if r Sskip Sbreak s' ->
      tr_stmt s3 ts3 ->
      tr_stmt s ts ->
      match_cont k tk ->
      match_cont (Csem.Kfor4 r s3 s k)
                 (Kloop2 (Ssequence s' ts) ts3 tk)
  | match_Kswitch2: forall k tk,
      match_cont k tk ->
      match_cont (Csem.Kswitch2 k) (Kswitch tk)
  | match_Kcall: forall f e C ty k optid tf le sl tk a dest tmps,
      tr_function f tf ->
      leftcontext RV RV C ->
      (forall v m, tr_top tge e (set_opttemp optid v le) m dest (C (Csyntax.Eval v ty)) sl a tmps) ->
      match_cont_exp dest a k tk ->
      match_cont (Csem.Kcall f e C ty k)
                 (Kcall optid tf e le (Kseqlist sl tk))
(*
  | match_Kcall_some: forall f e C ty k dst tf le sl tk a dest tmps,
      transl_function f = Errors.OK tf ->
      leftcontext RV RV C ->
      (forall v m, tr_top tge e (PTree.set dst v le) m dest (C (C.Eval v ty)) sl a tmps) ->
      match_cont_exp dest a k tk ->
      match_cont (Csem.Kcall f e C ty k)
                 (Kcall (Some dst) tf e le (Kseqlist sl tk))
*)

with match_cont_exp : destination -> expr -> Csem.cont -> cont -> Prop :=
  | match_Kdo: forall k a tk,
      match_cont k tk ->
      match_cont_exp For_effects a (Csem.Kdo k) tk
  | match_Kifthenelse_empty: forall a k tk,
      match_cont k tk ->
      match_cont_exp For_val a (Csem.Kifthenelse Csyntax.Sskip Csyntax.Sskip k) (Kseq Sskip tk)
  | match_Kifthenelse_1: forall a s1 s2 k ts1 ts2 tk,
      tr_stmt s1 ts1 -> tr_stmt s2 ts2 ->
      match_cont k tk ->
      match_cont_exp For_val a (Csem.Kifthenelse s1 s2 k) (Kseq (Sifthenelse a ts1 ts2) tk)
  | match_Kwhile1: forall r s k s' a ts tk,
      tr_if r Sskip Sbreak s' ->
      tr_stmt s ts ->
      match_cont k tk ->
      match_cont_exp For_val a
         (Csem.Kwhile1 r s k)
         (Kseq (makeif a Sskip Sbreak)
           (Kseq ts (Kloop1 (Ssequence s' ts) Sskip tk)))
  | match_Kdowhile2: forall r s k s' a ts tk,
      tr_if r Sskip Sbreak s' ->
      tr_stmt s ts ->
      match_cont k tk ->
      match_cont_exp For_val a
        (Csem.Kdowhile2 r s k)
        (Kseq (makeif a Sskip Sbreak) (Kloop2 ts s' tk))
  | match_Kfor2: forall r s3 s k s' a ts3 ts tk,
      tr_if r Sskip Sbreak s' ->
      tr_stmt s3 ts3 ->
      tr_stmt s ts ->
      match_cont k tk ->
      match_cont_exp For_val a
        (Csem.Kfor2 r s3 s k)
        (Kseq (makeif a Sskip Sbreak)
          (Kseq ts (Kloop1 (Ssequence s' ts) ts3 tk)))
  | match_Kswitch1: forall ls k a tls tk,
      tr_lblstmts ls tls ->
      match_cont k tk ->
      match_cont_exp For_val a (Csem.Kswitch1 ls k) (Kseq (Sswitch a tls) tk)
  | match_Kreturn: forall k a tk,
      match_cont k tk ->
      match_cont_exp For_val a (Csem.Kreturn k) (Kseq (Sreturn (Some a)) tk).(** Matching between continuations *)

Inductive match_cont : Csem.cont -> cont -> Prop :=
  | match_Kstop:
      match_cont Csem.Kstop Kstop
  | match_Kseq: forall s k ts tk,
      tr_stmt s ts ->
      match_cont k tk ->
      match_cont (Csem.Kseq s k) (Kseq ts tk)
  | match_Kwhile2: forall r s k s' ts tk,
      tr_if r Sskip Sbreak s' ->
      tr_stmt s ts ->
      match_cont k tk ->
      match_cont (Csem.Kwhile2 r s k)
                 (Kloop1 (Ssequence s' ts) Sskip tk)
  | match_Kdowhile1: forall r s k s' ts tk,
      tr_if r Sskip Sbreak s' ->
      tr_stmt s ts ->
      match_cont k tk ->
      match_cont (Csem.Kdowhile1 r s k)
                 (Kloop1 ts s' tk)
  | match_Kfor3: forall r s3 s k ts3 s' ts tk,
      tr_if r Sskip Sbreak s' ->
      tr_stmt s3 ts3 ->
      tr_stmt s ts ->
      match_cont k tk ->
      match_cont (Csem.Kfor3 r s3 s k)
                 (Kloop1 (Ssequence s' ts) ts3 tk)
  | match_Kfor4: forall r s3 s k ts3 s' ts tk,
      tr_if r Sskip Sbreak s' ->
      tr_stmt s3 ts3 ->
      tr_stmt s ts ->
      match_cont k tk ->
      match_cont (Csem.Kfor4 r s3 s k)
                 (Kloop2 (Ssequence s' ts) ts3 tk)
  | match_Kswitch2: forall k tk,
      match_cont k tk ->
      match_cont (Csem.Kswitch2 k) (Kswitch tk)
  | match_Kcall: forall f e C ty k optid tf le sl tk a dest tmps,
      tr_function f tf ->
      leftcontext RV RV C ->
      (forall v m, tr_top tge e (set_opttemp optid v le) m dest (C (Csyntax.Eval v ty)) sl a tmps) ->
      match_cont_exp dest a k tk ->
      match_cont (Csem.Kcall f e C ty k)
                 (Kcall optid tf e le (Kseqlist sl tk))
(*
  | match_Kcall_some: forall f e C ty k dst tf le sl tk a dest tmps,
      transl_function f = Errors.OK tf ->
      leftcontext RV RV C ->
      (forall v m, tr_top tge e (PTree.set dst v le) m dest (C (C.Eval v ty)) sl a tmps) ->
      match_cont_exp dest a k tk ->
      match_cont (Csem.Kcall f e C ty k)
                 (Kcall (Some dst) tf e le (Kseqlist sl tk))
*)

with match_cont_exp : destination -> expr -> Csem.cont -> cont -> Prop :=
  | match_Kdo: forall k a tk,
      match_cont k tk ->
      match_cont_exp For_effects a (Csem.Kdo k) tk
  | match_Kifthenelse_empty: forall a k tk,
      match_cont k tk ->
      match_cont_exp For_val a (Csem.Kifthenelse Csyntax.Sskip Csyntax.Sskip k) (Kseq Sskip tk)
  | match_Kifthenelse_1: forall a s1 s2 k ts1 ts2 tk,
      tr_stmt s1 ts1 -> tr_stmt s2 ts2 ->
      match_cont k tk ->
      match_cont_exp For_val a (Csem.Kifthenelse s1 s2 k) (Kseq (Sifthenelse a ts1 ts2) tk)
  | match_Kwhile1: forall r s k s' a ts tk,
      tr_if r Sskip Sbreak s' ->
      tr_stmt s ts ->
      match_cont k tk ->
      match_cont_exp For_val a
         (Csem.Kwhile1 r s k)
         (Kseq (makeif a Sskip Sbreak)
           (Kseq ts (Kloop1 (Ssequence s' ts) Sskip tk)))
  | match_Kdowhile2: forall r s k s' a ts tk,
      tr_if r Sskip Sbreak s' ->
      tr_stmt s ts ->
      match_cont k tk ->
      match_cont_exp For_val a
        (Csem.Kdowhile2 r s k)
        (Kseq (makeif a Sskip Sbreak) (Kloop2 ts s' tk))
  | match_Kfor2: forall r s3 s k s' a ts3 ts tk,
      tr_if r Sskip Sbreak s' ->
      tr_stmt s3 ts3 ->
      tr_stmt s ts ->
      match_cont k tk ->
      match_cont_exp For_val a
        (Csem.Kfor2 r s3 s k)
        (Kseq (makeif a Sskip Sbreak)
          (Kseq ts (Kloop1 (Ssequence s' ts) ts3 tk)))
  | match_Kswitch1: forall ls k a tls tk,
      tr_lblstmts ls tls ->
      match_cont k tk ->
      match_cont_exp For_val a (Csem.Kswitch1 ls k) (Kseq (Sswitch a tls) tk)
  | match_Kreturn: forall k a tk,
      match_cont k tk ->
      match_cont_exp For_val a (Csem.Kreturn k) (Kseq (Sreturn (Some a)) tk).(** Matching between continuations *)

Inductive match_cont : Csem.cont -> cont -> Prop :=
  | match_Kstop:
      match_cont Csem.Kstop Kstop
  | match_Kseq: forall s k ts tk,
      tr_stmt s ts ->
      match_cont k tk ->
      match_cont (Csem.Kseq s k) (Kseq ts tk)
  | match_Kwhile2: forall r s k s' ts tk,
      tr_if r Sskip Sbreak s' ->
      tr_stmt s ts ->
      match_cont k tk ->
      match_cont (Csem.Kwhile2 r s k)
                 (Kloop1 (Ssequence s' ts) Sskip tk)
  | match_Kdowhile1: forall r s k s' ts tk,
      tr_if r Sskip Sbreak s' ->
      tr_stmt s ts ->
      match_cont k tk ->
      match_cont (Csem.Kdowhile1 r s k)
                 (Kloop1 ts s' tk)
  | match_Kfor3: forall r s3 s k ts3 s' ts tk,
      tr_if r Sskip Sbreak s' ->
      tr_stmt s3 ts3 ->
      tr_stmt s ts ->
      match_cont k tk ->
      match_cont (Csem.Kfor3 r s3 s k)
                 (Kloop1 (Ssequence s' ts) ts3 tk)
  | match_Kfor4: forall r s3 s k ts3 s' ts tk,
      tr_if r Sskip Sbreak s' ->
      tr_stmt s3 ts3 ->
      tr_stmt s ts ->
      match_cont k tk ->
      match_cont (Csem.Kfor4 r s3 s k)
                 (Kloop2 (Ssequence s' ts) ts3 tk)
  | match_Kswitch2: forall k tk,
      match_cont k tk ->
      match_cont (Csem.Kswitch2 k) (Kswitch tk)
  | match_Kcall: forall f e C ty k optid tf le sl tk a dest tmps,
      tr_function f tf ->
      leftcontext RV RV C ->
      (forall v m, tr_top tge e (set_opttemp optid v le) m dest (C (Csyntax.Eval v ty)) sl a tmps) ->
      match_cont_exp dest a k tk ->
      match_cont (Csem.Kcall f e C ty k)
                 (Kcall optid tf e le (Kseqlist sl tk))
(*
  | match_Kcall_some: forall f e C ty k dst tf le sl tk a dest tmps,
      transl_function f = Errors.OK tf ->
      leftcontext RV RV C ->
      (forall v m, tr_top tge e (PTree.set dst v le) m dest (C (C.Eval v ty)) sl a tmps) ->
      match_cont_exp dest a k tk ->
      match_cont (Csem.Kcall f e C ty k)
                 (Kcall (Some dst) tf e le (Kseqlist sl tk))
*)

with match_cont_exp : destination -> expr -> Csem.cont -> cont -> Prop :=
  | match_Kdo: forall k a tk,
      match_cont k tk ->
      match_cont_exp For_effects a (Csem.Kdo k) tk
  | match_Kifthenelse_empty: forall a k tk,
      match_cont k tk ->
      match_cont_exp For_val a (Csem.Kifthenelse Csyntax.Sskip Csyntax.Sskip k) (Kseq Sskip tk)
  | match_Kifthenelse_1: forall a s1 s2 k ts1 ts2 tk,
      tr_stmt s1 ts1 -> tr_stmt s2 ts2 ->
      match_cont k tk ->
      match_cont_exp For_val a (Csem.Kifthenelse s1 s2 k) (Kseq (Sifthenelse a ts1 ts2) tk)
  | match_Kwhile1: forall r s k s' a ts tk,
      tr_if r Sskip Sbreak s' ->
      tr_stmt s ts ->
      match_cont k tk ->
      match_cont_exp For_val a
         (Csem.Kwhile1 r s k)
         (Kseq (makeif a Sskip Sbreak)
           (Kseq ts (Kloop1 (Ssequence s' ts) Sskip tk)))
  | match_Kdowhile2: forall r s k s' a ts tk,
      tr_if r Sskip Sbreak s' ->
      tr_stmt s ts ->
      match_cont k tk ->
      match_cont_exp For_val a
        (Csem.Kdowhile2 r s k)
        (Kseq (makeif a Sskip Sbreak) (Kloop2 ts s' tk))
  | match_Kfor2: forall r s3 s k s' a ts3 ts tk,
      tr_if r Sskip Sbreak s' ->
      tr_stmt s3 ts3 ->
      tr_stmt s ts ->
      match_cont k tk ->
      match_cont_exp For_val a
        (Csem.Kfor2 r s3 s k)
        (Kseq (makeif a Sskip Sbreak)
          (Kseq ts (Kloop1 (Ssequence s' ts) ts3 tk)))
  | match_Kswitch1: forall ls k a tls tk,
      tr_lblstmts ls tls ->
      match_cont k tk ->
      match_cont_exp For_val a (Csem.Kswitch1 ls k) (Kseq (Sswitch a tls) tk)
  | match_Kreturn: forall k a tk,
      match_cont k tk ->
      match_cont_exp For_val a (Csem.Kreturn k) (Kseq (Sreturn (Some a)) tk).(** Matching between continuations *)

Inductive match_cont : Csem.cont -> cont -> Prop :=
  | match_Kstop:
      match_cont Csem.Kstop Kstop
  | match_Kseq: forall s k ts tk,
      tr_stmt s ts ->
      match_cont k tk ->
      match_cont (Csem.Kseq s k) (Kseq ts tk)
  | match_Kwhile2: forall r s k s' ts tk,
      tr_if r Sskip Sbreak s' ->
      tr_stmt s ts ->
      match_cont k tk ->
      match_cont (Csem.Kwhile2 r s k)
                 (Kloop1 (Ssequence s' ts) Sskip tk)
  | match_Kdowhile1: forall r s k s' ts tk,
      tr_if r Sskip Sbreak s' ->
      tr_stmt s ts ->
      match_cont k tk ->
      match_cont (Csem.Kdowhile1 r s k)
                 (Kloop1 ts s' tk)
  | match_Kfor3: forall r s3 s k ts3 s' ts tk,
      tr_if r Sskip Sbreak s' ->
      tr_stmt s3 ts3 ->
      tr_stmt s ts ->
      match_cont k tk ->
      match_cont (Csem.Kfor3 r s3 s k)
                 (Kloop1 (Ssequence s' ts) ts3 tk)
  | match_Kfor4: forall r s3 s k ts3 s' ts tk,
      tr_if r Sskip Sbreak s' ->
      tr_stmt s3 ts3 ->
      tr_stmt s ts ->
      match_cont k tk ->
      match_cont (Csem.Kfor4 r s3 s k)
                 (Kloop2 (Ssequence s' ts) ts3 tk)
  | match_Kswitch2: forall k tk,
      match_cont k tk ->
      match_cont (Csem.Kswitch2 k) (Kswitch tk)
  | match_Kcall: forall f e C ty k optid tf le sl tk a dest tmps,
      tr_function f tf ->
      leftcontext RV RV C ->
      (forall v m, tr_top tge e (set_opttemp optid v le) m dest (C (Csyntax.Eval v ty)) sl a tmps) ->
      match_cont_exp dest a k tk ->
      match_cont (Csem.Kcall f e C ty k)
                 (Kcall optid tf e le (Kseqlist sl tk))
(*
  | match_Kcall_some: forall f e C ty k dst tf le sl tk a dest tmps,
      transl_function f = Errors.OK tf ->
      leftcontext RV RV C ->
      (forall v m, tr_top tge e (PTree.set dst v le) m dest (C (C.Eval v ty)) sl a tmps) ->
      match_cont_exp dest a k tk ->
      match_cont (Csem.Kcall f e C ty k)
                 (Kcall (Some dst) tf e le (Kseqlist sl tk))
*)

with match_cont_exp : destination -> expr -> Csem.cont -> cont -> Prop :=
  | match_Kdo: forall k a tk,
      match_cont k tk ->
      match_cont_exp For_effects a (Csem.Kdo k) tk
  | match_Kifthenelse_empty: forall a k tk,
      match_cont k tk ->
      match_cont_exp For_val a (Csem.Kifthenelse Csyntax.Sskip Csyntax.Sskip k) (Kseq Sskip tk)
  | match_Kifthenelse_1: forall a s1 s2 k ts1 ts2 tk,
      tr_stmt s1 ts1 -> tr_stmt s2 ts2 ->
      match_cont k tk ->
      match_cont_exp For_val a (Csem.Kifthenelse s1 s2 k) (Kseq (Sifthenelse a ts1 ts2) tk)
  | match_Kwhile1: forall r s k s' a ts tk,
      tr_if r Sskip Sbreak s' ->
      tr_stmt s ts ->
      match_cont k tk ->
      match_cont_exp For_val a
         (Csem.Kwhile1 r s k)
         (Kseq (makeif a Sskip Sbreak)
           (Kseq ts (Kloop1 (Ssequence s' ts) Sskip tk)))
  | match_Kdowhile2: forall r s k s' a ts tk,
      tr_if r Sskip Sbreak s' ->
      tr_stmt s ts ->
      match_cont k tk ->
      match_cont_exp For_val a
        (Csem.Kdowhile2 r s k)
        (Kseq (makeif a Sskip Sbreak) (Kloop2 ts s' tk))
  | match_Kfor2: forall r s3 s k s' a ts3 ts tk,
      tr_if r Sskip Sbreak s' ->
      tr_stmt s3 ts3 ->
      tr_stmt s ts ->
      match_cont k tk ->
      match_cont_exp For_val a
        (Csem.Kfor2 r s3 s k)
        (Kseq (makeif a Sskip Sbreak)
          (Kseq ts (Kloop1 (Ssequence s' ts) ts3 tk)))
  | match_Kswitch1: forall ls k a tls tk,
      tr_lblstmts ls tls ->
      match_cont k tk ->
      match_cont_exp For_val a (Csem.Kswitch1 ls k) (Kseq (Sswitch a tls) tk)
  | match_Kreturn: forall k a tk,
      match_cont k tk ->
      match_cont_exp For_val a (Csem.Kreturn k) (Kseq (Sreturn (Some a)) tk).(** Matching between continuations *)

Inductive match_cont : Csem.cont -> cont -> Prop :=
  | match_Kstop:
      match_cont Csem.Kstop Kstop
  | match_Kseq: forall s k ts tk,
      tr_stmt s ts ->
      match_cont k tk ->
      match_cont (Csem.Kseq s k) (Kseq ts tk)
  | match_Kwhile2: forall r s k s' ts tk,
      tr_if r Sskip Sbreak s' ->
      tr_stmt s ts ->
      match_cont k tk ->
      match_cont (Csem.Kwhile2 r s k)
                 (Kloop1 (Ssequence s' ts) Sskip tk)
  | match_Kdowhile1: forall r s k s' ts tk,
      tr_if r Sskip Sbreak s' ->
      tr_stmt s ts ->
      match_cont k tk ->
      match_cont (Csem.Kdowhile1 r s k)
                 (Kloop1 ts s' tk)
  | match_Kfor3: forall r s3 s k ts3 s' ts tk,
      tr_if r Sskip Sbreak s' ->
      tr_stmt s3 ts3 ->
      tr_stmt s ts ->
      match_cont k tk ->
      match_cont (Csem.Kfor3 r s3 s k)
                 (Kloop1 (Ssequence s' ts) ts3 tk)
  | match_Kfor4: forall r s3 s k ts3 s' ts tk,
      tr_if r Sskip Sbreak s' ->
      tr_stmt s3 ts3 ->
      tr_stmt s ts ->
      match_cont k tk ->
      match_cont (Csem.Kfor4 r s3 s k)
                 (Kloop2 (Ssequence s' ts) ts3 tk)
  | match_Kswitch2: forall k tk,
      match_cont k tk ->
      match_cont (Csem.Kswitch2 k) (Kswitch tk)
  | match_Kcall: forall f e C ty k optid tf le sl tk a dest tmps,
      tr_function f tf ->
      leftcontext RV RV C ->
      (forall v m, tr_top tge e (set_opttemp optid v le) m dest (C (Csyntax.Eval v ty)) sl a tmps) ->
      match_cont_exp dest a k tk ->
      match_cont (Csem.Kcall f e C ty k)
                 (Kcall optid tf e le (Kseqlist sl tk))
(*
  | match_Kcall_some: forall f e C ty k dst tf le sl tk a dest tmps,
      transl_function f = Errors.OK tf ->
      leftcontext RV RV C ->
      (forall v m, tr_top tge e (PTree.set dst v le) m dest (C (C.Eval v ty)) sl a tmps) ->
      match_cont_exp dest a k tk ->
      match_cont (Csem.Kcall f e C ty k)
                 (Kcall (Some dst) tf e le (Kseqlist sl tk))
*)

with match_cont_exp : destination -> expr -> Csem.cont -> cont -> Prop :=
  | match_Kdo: forall k a tk,
      match_cont k tk ->
      match_cont_exp For_effects a (Csem.Kdo k) tk
  | match_Kifthenelse_empty: forall a k tk,
      match_cont k tk ->
      match_cont_exp For_val a (Csem.Kifthenelse Csyntax.Sskip Csyntax.Sskip k) (Kseq Sskip tk)
  | match_Kifthenelse_1: forall a s1 s2 k ts1 ts2 tk,
      tr_stmt s1 ts1 -> tr_stmt s2 ts2 ->
      match_cont k tk ->
      match_cont_exp For_val a (Csem.Kifthenelse s1 s2 k) (Kseq (Sifthenelse a ts1 ts2) tk)
  | match_Kwhile1: forall r s k s' a ts tk,
      tr_if r Sskip Sbreak s' ->
      tr_stmt s ts ->
      match_cont k tk ->
      match_cont_exp For_val a
         (Csem.Kwhile1 r s k)
         (Kseq (makeif a Sskip Sbreak)
           (Kseq ts (Kloop1 (Ssequence s' ts) Sskip tk)))
  | match_Kdowhile2: forall r s k s' a ts tk,
      tr_if r Sskip Sbreak s' ->
      tr_stmt s ts ->
      match_cont k tk ->
      match_cont_exp For_val a
        (Csem.Kdowhile2 r s k)
        (Kseq (makeif a Sskip Sbreak) (Kloop2 ts s' tk))
  | match_Kfor2: forall r s3 s k s' a ts3 ts tk,
      tr_if r Sskip Sbreak s' ->
      tr_stmt s3 ts3 ->
      tr_stmt s ts ->
      match_cont k tk ->
      match_cont_exp For_val a
        (Csem.Kfor2 r s3 s k)
        (Kseq (makeif a Sskip Sbreak)
          (Kseq ts (Kloop1 (Ssequence s' ts) ts3 tk)))
  | match_Kswitch1: forall ls k a tls tk,
      tr_lblstmts ls tls ->
      match_cont k tk ->
      match_cont_exp For_val a (Csem.Kswitch1 ls k) (Kseq (Sswitch a tls) tk)
  | match_Kreturn: forall k a tk,
      match_cont k tk ->
      match_cont_exp For_val a (Csem.Kreturn k) (Kseq (Sreturn (Some a)) tk).(** Matching between continuations *)

Inductive match_cont : Csem.cont -> cont -> Prop :=
  | match_Kstop:
      match_cont Csem.Kstop Kstop
  | match_Kseq: forall s k ts tk,
      tr_stmt s ts ->
      match_cont k tk ->
      match_cont (Csem.Kseq s k) (Kseq ts tk)
  | match_Kwhile2: forall r s k s' ts tk,
      tr_if r Sskip Sbreak s' ->
      tr_stmt s ts ->
      match_cont k tk ->
      match_cont (Csem.Kwhile2 r s k)
                 (Kloop1 (Ssequence s' ts) Sskip tk)
  | match_Kdowhile1: forall r s k s' ts tk,
      tr_if r Sskip Sbreak s' ->
      tr_stmt s ts ->
      match_cont k tk ->
      match_cont (Csem.Kdowhile1 r s k)
                 (Kloop1 ts s' tk)
  | match_Kfor3: forall r s3 s k ts3 s' ts tk,
      tr_if r Sskip Sbreak s' ->
      tr_stmt s3 ts3 ->
      tr_stmt s ts ->
      match_cont k tk ->
      match_cont (Csem.Kfor3 r s3 s k)
                 (Kloop1 (Ssequence s' ts) ts3 tk)
  | match_Kfor4: forall r s3 s k ts3 s' ts tk,
      tr_if r Sskip Sbreak s' ->
      tr_stmt s3 ts3 ->
      tr_stmt s ts ->
      match_cont k tk ->
      match_cont (Csem.Kfor4 r s3 s k)
                 (Kloop2 (Ssequence s' ts) ts3 tk)
  | match_Kswitch2: forall k tk,
      match_cont k tk ->
      match_cont (Csem.Kswitch2 k) (Kswitch tk)
  | match_Kcall: forall f e C ty k optid tf le sl tk a dest tmps,
      tr_function f tf ->
      leftcontext RV RV C ->
      (forall v m, tr_top tge e (set_opttemp optid v le) m dest (C (Csyntax.Eval v ty)) sl a tmps) ->
      match_cont_exp dest a k tk ->
      match_cont (Csem.Kcall f e C ty k)
                 (Kcall optid tf e le (Kseqlist sl tk))
(*
  | match_Kcall_some: forall f e C ty k dst tf le sl tk a dest tmps,
      transl_function f = Errors.OK tf ->
      leftcontext RV RV C ->
      (forall v m, tr_top tge e (PTree.set dst v le) m dest (C (C.Eval v ty)) sl a tmps) ->
      match_cont_exp dest a k tk ->
      match_cont (Csem.Kcall f e C ty k)
                 (Kcall (Some dst) tf e le (Kseqlist sl tk))
*)

with match_cont_exp : destination -> expr -> Csem.cont -> cont -> Prop :=
  | match_Kdo: forall k a tk,
      match_cont k tk ->
      match_cont_exp For_effects a (Csem.Kdo k) tk
  | match_Kifthenelse_empty: forall a k tk,
      match_cont k tk ->
      match_cont_exp For_val a (Csem.Kifthenelse Csyntax.Sskip Csyntax.Sskip k) (Kseq Sskip tk)
  | match_Kifthenelse_1: forall a s1 s2 k ts1 ts2 tk,
      tr_stmt s1 ts1 -> tr_stmt s2 ts2 ->
      match_cont k tk ->
      match_cont_exp For_val a (Csem.Kifthenelse s1 s2 k) (Kseq (Sifthenelse a ts1 ts2) tk)
  | match_Kwhile1: forall r s k s' a ts tk,
      tr_if r Sskip Sbreak s' ->
      tr_stmt s ts ->
      match_cont k tk ->
      match_cont_exp For_val a
         (Csem.Kwhile1 r s k)
         (Kseq (makeif a Sskip Sbreak)
           (Kseq ts (Kloop1 (Ssequence s' ts) Sskip tk)))
  | match_Kdowhile2: forall r s k s' a ts tk,
      tr_if r Sskip Sbreak s' ->
      tr_stmt s ts ->
      match_cont k tk ->
      match_cont_exp For_val a
        (Csem.Kdowhile2 r s k)
        (Kseq (makeif a Sskip Sbreak) (Kloop2 ts s' tk))
  | match_Kfor2: forall r s3 s k s' a ts3 ts tk,
      tr_if r Sskip Sbreak s' ->
      tr_stmt s3 ts3 ->
      tr_stmt s ts ->
      match_cont k tk ->
      match_cont_exp For_val a
        (Csem.Kfor2 r s3 s k)
        (Kseq (makeif a Sskip Sbreak)
          (Kseq ts (Kloop1 (Ssequence s' ts) ts3 tk)))
  | match_Kswitch1: forall ls k a tls tk,
      tr_lblstmts ls tls ->
      match_cont k tk ->
      match_cont_exp For_val a (Csem.Kswitch1 ls k) (Kseq (Sswitch a tls) tk)
  | match_Kreturn: forall k a tk,
      match_cont k tk ->
      match_cont_exp For_val a (Csem.Kreturn k) (Kseq (Sreturn (Some a)) tk).(** Matching between continuations *)

Inductive match_cont : Csem.cont -> cont -> Prop :=
  | match_Kstop:
      match_cont Csem.Kstop Kstop
  | match_Kseq: forall s k ts tk,
      tr_stmt s ts ->
      match_cont k tk ->
      match_cont (Csem.Kseq s k) (Kseq ts tk)
  | match_Kwhile2: forall r s k s' ts tk,
      tr_if r Sskip Sbreak s' ->
      tr_stmt s ts ->
      match_cont k tk ->
      match_cont (Csem.Kwhile2 r s k)
                 (Kloop1 (Ssequence s' ts) Sskip tk)
  | match_Kdowhile1: forall r s k s' ts tk,
      tr_if r Sskip Sbreak s' ->
      tr_stmt s ts ->
      match_cont k tk ->
      match_cont (Csem.Kdowhile1 r s k)
                 (Kloop1 ts s' tk)
  | match_Kfor3: forall r s3 s k ts3 s' ts tk,
      tr_if r Sskip Sbreak s' ->
      tr_stmt s3 ts3 ->
      tr_stmt s ts ->
      match_cont k tk ->
      match_cont (Csem.Kfor3 r s3 s k)
                 (Kloop1 (Ssequence s' ts) ts3 tk)
  | match_Kfor4: forall r s3 s k ts3 s' ts tk,
      tr_if r Sskip Sbreak s' ->
      tr_stmt s3 ts3 ->
      tr_stmt s ts ->
      match_cont k tk ->
      match_cont (Csem.Kfor4 r s3 s k)
                 (Kloop2 (Ssequence s' ts) ts3 tk)
  | match_Kswitch2: forall k tk,
      match_cont k tk ->
      match_cont (Csem.Kswitch2 k) (Kswitch tk)
  | match_Kcall: forall f e C ty k optid tf le sl tk a dest tmps,
      tr_function f tf ->
      leftcontext RV RV C ->
      (forall v m, tr_top tge e (set_opttemp optid v le) m dest (C (Csyntax.Eval v ty)) sl a tmps) ->
      match_cont_exp dest a k tk ->
      match_cont (Csem.Kcall f e C ty k)
                 (Kcall optid tf e le (Kseqlist sl tk))
(*
  | match_Kcall_some: forall f e C ty k dst tf le sl tk a dest tmps,
      transl_function f = Errors.OK tf ->
      leftcontext RV RV C ->
      (forall v m, tr_top tge e (PTree.set dst v le) m dest (C (C.Eval v ty)) sl a tmps) ->
      match_cont_exp dest a k tk ->
      match_cont (Csem.Kcall f e C ty k)
                 (Kcall (Some dst) tf e le (Kseqlist sl tk))
*)

with match_cont_exp : destination -> expr -> Csem.cont -> cont -> Prop :=
  | match_Kdo: forall k a tk,
      match_cont k tk ->
      match_cont_exp For_effects a (Csem.Kdo k) tk
  | match_Kifthenelse_empty: forall a k tk,
      match_cont k tk ->
      match_cont_exp For_val a (Csem.Kifthenelse Csyntax.Sskip Csyntax.Sskip k) (Kseq Sskip tk)
  | match_Kifthenelse_1: forall a s1 s2 k ts1 ts2 tk,
      tr_stmt s1 ts1 -> tr_stmt s2 ts2 ->
      match_cont k tk ->
      match_cont_exp For_val a (Csem.Kifthenelse s1 s2 k) (Kseq (Sifthenelse a ts1 ts2) tk)
  | match_Kwhile1: forall r s k s' a ts tk,
      tr_if r Sskip Sbreak s' ->
      tr_stmt s ts ->
      match_cont k tk ->
      match_cont_exp For_val a
         (Csem.Kwhile1 r s k)
         (Kseq (makeif a Sskip Sbreak)
           (Kseq ts (Kloop1 (Ssequence s' ts) Sskip tk)))
  | match_Kdowhile2: forall r s k s' a ts tk,
      tr_if r Sskip Sbreak s' ->
      tr_stmt s ts ->
      match_cont k tk ->
      match_cont_exp For_val a
        (Csem.Kdowhile2 r s k)
        (Kseq (makeif a Sskip Sbreak) (Kloop2 ts s' tk))
  | match_Kfor2: forall r s3 s k s' a ts3 ts tk,
      tr_if r Sskip Sbreak s' ->
      tr_stmt s3 ts3 ->
      tr_stmt s ts ->
      match_cont k tk ->
      match_cont_exp For_val a
        (Csem.Kfor2 r s3 s k)
        (Kseq (makeif a Sskip Sbreak)
          (Kseq ts (Kloop1 (Ssequence s' ts) ts3 tk)))
  | match_Kswitch1: forall ls k a tls tk,
      tr_lblstmts ls tls ->
      match_cont k tk ->
      match_cont_exp For_val a (Csem.Kswitch1 ls k) (Kseq (Sswitch a tls) tk)
  | match_Kreturn: forall k a tk,
      match_cont k tk ->
      match_cont_exp For_val a (Csem.Kreturn k) (Kseq (Sreturn (Some a)) tk).(** Matching between continuations *)

Inductive match_cont : Csem.cont -> cont -> Prop :=
  | match_Kstop:
      match_cont Csem.Kstop Kstop
  | match_Kseq: forall s k ts tk,
      tr_stmt s ts ->
      match_cont k tk ->
      match_cont (Csem.Kseq s k) (Kseq ts tk)
  | match_Kwhile2: forall r s k s' ts tk,
      tr_if r Sskip Sbreak s' ->
      tr_stmt s ts ->
      match_cont k tk ->
      match_cont (Csem.Kwhile2 r s k)
                 (Kloop1 (Ssequence s' ts) Sskip tk)
  | match_Kdowhile1: forall r s k s' ts tk,
      tr_if r Sskip Sbreak s' ->
      tr_stmt s ts ->
      match_cont k tk ->
      match_cont (Csem.Kdowhile1 r s k)
                 (Kloop1 ts s' tk)
  | match_Kfor3: forall r s3 s k ts3 s' ts tk,
      tr_if r Sskip Sbreak s' ->
      tr_stmt s3 ts3 ->
      tr_stmt s ts ->
      match_cont k tk ->
      match_cont (Csem.Kfor3 r s3 s k)
                 (Kloop1 (Ssequence s' ts) ts3 tk)
  | match_Kfor4: forall r s3 s k ts3 s' ts tk,
      tr_if r Sskip Sbreak s' ->
      tr_stmt s3 ts3 ->
      tr_stmt s ts ->
      match_cont k tk ->
      match_cont (Csem.Kfor4 r s3 s k)
                 (Kloop2 (Ssequence s' ts) ts3 tk)
  | match_Kswitch2: forall k tk,
      match_cont k tk ->
      match_cont (Csem.Kswitch2 k) (Kswitch tk)
  | match_Kcall: forall f e C ty k optid tf le sl tk a dest tmps,
      tr_function f tf ->
      leftcontext RV RV C ->
      (forall v m, tr_top tge e (set_opttemp optid v le) m dest (C (Csyntax.Eval v ty)) sl a tmps) ->
      match_cont_exp dest a k tk ->
      match_cont (Csem.Kcall f e C ty k)
                 (Kcall optid tf e le (Kseqlist sl tk))
(*
  | match_Kcall_some: forall f e C ty k dst tf le sl tk a dest tmps,
      transl_function f = Errors.OK tf ->
      leftcontext RV RV C ->
      (forall v m, tr_top tge e (PTree.set dst v le) m dest (C (C.Eval v ty)) sl a tmps) ->
      match_cont_exp dest a k tk ->
      match_cont (Csem.Kcall f e C ty k)
                 (Kcall (Some dst) tf e le (Kseqlist sl tk))
*)

with match_cont_exp : destination -> expr -> Csem.cont -> cont -> Prop :=
  | match_Kdo: forall k a tk,
      match_cont k tk ->
      match_cont_exp For_effects a (Csem.Kdo k) tk
  | match_Kifthenelse_empty: forall a k tk,
      match_cont k tk ->
      match_cont_exp For_val a (Csem.Kifthenelse Csyntax.Sskip Csyntax.Sskip k) (Kseq Sskip tk)
  | match_Kifthenelse_1: forall a s1 s2 k ts1 ts2 tk,
      tr_stmt s1 ts1 -> tr_stmt s2 ts2 ->
      match_cont k tk ->
      match_cont_exp For_val a (Csem.Kifthenelse s1 s2 k) (Kseq (Sifthenelse a ts1 ts2) tk)
  | match_Kwhile1: forall r s k s' a ts tk,
      tr_if r Sskip Sbreak s' ->
      tr_stmt s ts ->
      match_cont k tk ->
      match_cont_exp For_val a
         (Csem.Kwhile1 r s k)
         (Kseq (makeif a Sskip Sbreak)
           (Kseq ts (Kloop1 (Ssequence s' ts) Sskip tk)))
  | match_Kdowhile2: forall r s k s' a ts tk,
      tr_if r Sskip Sbreak s' ->
      tr_stmt s ts ->
      match_cont k tk ->
      match_cont_exp For_val a
        (Csem.Kdowhile2 r s k)
        (Kseq (makeif a Sskip Sbreak) (Kloop2 ts s' tk))
  | match_Kfor2: forall r s3 s k s' a ts3 ts tk,
      tr_if r Sskip Sbreak s' ->
      tr_stmt s3 ts3 ->
      tr_stmt s ts ->
      match_cont k tk ->
      match_cont_exp For_val a
        (Csem.Kfor2 r s3 s k)
        (Kseq (makeif a Sskip Sbreak)
          (Kseq ts (Kloop1 (Ssequence s' ts) ts3 tk)))
  | match_Kswitch1: forall ls k a tls tk,
      tr_lblstmts ls tls ->
      match_cont k tk ->
      match_cont_exp For_val a (Csem.Kswitch1 ls k) (Kseq (Sswitch a tls) tk)
  | match_Kreturn: forall k a tk,
      match_cont k tk ->
      match_cont_exp For_val a (Csem.Kreturn k) (Kseq (Sreturn (Some a)) tk).(** Matching between continuations *)

Inductive match_cont : Csem.cont -> cont -> Prop :=
  | match_Kstop:
      match_cont Csem.Kstop Kstop
  | match_Kseq: forall s k ts tk,
      tr_stmt s ts ->
      match_cont k tk ->
      match_cont (Csem.Kseq s k) (Kseq ts tk)
  | match_Kwhile2: forall r s k s' ts tk,
      tr_if r Sskip Sbreak s' ->
      tr_stmt s ts ->
      match_cont k tk ->
      match_cont (Csem.Kwhile2 r s k)
                 (Kloop1 (Ssequence s' ts) Sskip tk)
  | match_Kdowhile1: forall r s k s' ts tk,
      tr_if r Sskip Sbreak s' ->
      tr_stmt s ts ->
      match_cont k tk ->
      match_cont (Csem.Kdowhile1 r s k)
                 (Kloop1 ts s' tk)
  | match_Kfor3: forall r s3 s k ts3 s' ts tk,
      tr_if r Sskip Sbreak s' ->
      tr_stmt s3 ts3 ->
      tr_stmt s ts ->
      match_cont k tk ->
      match_cont (Csem.Kfor3 r s3 s k)
                 (Kloop1 (Ssequence s' ts) ts3 tk)
  | match_Kfor4: forall r s3 s k ts3 s' ts tk,
      tr_if r Sskip Sbreak s' ->
      tr_stmt s3 ts3 ->
      tr_stmt s ts ->
      match_cont k tk ->
      match_cont (Csem.Kfor4 r s3 s k)
                 (Kloop2 (Ssequence s' ts) ts3 tk)
  | match_Kswitch2: forall k tk,
      match_cont k tk ->
      match_cont (Csem.Kswitch2 k) (Kswitch tk)
  | match_Kcall: forall f e C ty k optid tf le sl tk a dest tmps,
      tr_function f tf ->
      leftcontext RV RV C ->
      (forall v m, tr_top tge e (set_opttemp optid v le) m dest (C (Csyntax.Eval v ty)) sl a tmps) ->
      match_cont_exp dest a k tk ->
      match_cont (Csem.Kcall f e C ty k)
                 (Kcall optid tf e le (Kseqlist sl tk))
(*
  | match_Kcall_some: forall f e C ty k dst tf le sl tk a dest tmps,
      transl_function f = Errors.OK tf ->
      leftcontext RV RV C ->
      (forall v m, tr_top tge e (PTree.set dst v le) m dest (C (C.Eval v ty)) sl a tmps) ->
      match_cont_exp dest a k tk ->
      match_cont (Csem.Kcall f e C ty k)
                 (Kcall (Some dst) tf e le (Kseqlist sl tk))
*)

with match_cont_exp : destination -> expr -> Csem.cont -> cont -> Prop :=
  | match_Kdo: forall k a tk,
      match_cont k tk ->
      match_cont_exp For_effects a (Csem.Kdo k) tk
  | match_Kifthenelse_empty: forall a k tk,
      match_cont k tk ->
      match_cont_exp For_val a (Csem.Kifthenelse Csyntax.Sskip Csyntax.Sskip k) (Kseq Sskip tk)
  | match_Kifthenelse_1: forall a s1 s2 k ts1 ts2 tk,
      tr_stmt s1 ts1 -> tr_stmt s2 ts2 ->
      match_cont k tk ->
      match_cont_exp For_val a (Csem.Kifthenelse s1 s2 k) (Kseq (Sifthenelse a ts1 ts2) tk)
  | match_Kwhile1: forall r s k s' a ts tk,
      tr_if r Sskip Sbreak s' ->
      tr_stmt s ts ->
      match_cont k tk ->
      match_cont_exp For_val a
         (Csem.Kwhile1 r s k)
         (Kseq (makeif a Sskip Sbreak)
           (Kseq ts (Kloop1 (Ssequence s' ts) Sskip tk)))
  | match_Kdowhile2: forall r s k s' a ts tk,
      tr_if r Sskip Sbreak s' ->
      tr_stmt s ts ->
      match_cont k tk ->
      match_cont_exp For_val a
        (Csem.Kdowhile2 r s k)
        (Kseq (makeif a Sskip Sbreak) (Kloop2 ts s' tk))
  | match_Kfor2: forall r s3 s k s' a ts3 ts tk,
      tr_if r Sskip Sbreak s' ->
      tr_stmt s3 ts3 ->
      tr_stmt s ts ->
      match_cont k tk ->
      match_cont_exp For_val a
        (Csem.Kfor2 r s3 s k)
        (Kseq (makeif a Sskip Sbreak)
          (Kseq ts (Kloop1 (Ssequence s' ts) ts3 tk)))
  | match_Kswitch1: forall ls k a tls tk,
      tr_lblstmts ls tls ->
      match_cont k tk ->
      match_cont_exp For_val a (Csem.Kswitch1 ls k) (Kseq (Sswitch a tls) tk)
  | match_Kreturn: forall k a tk,
      match_cont k tk ->
      match_cont_exp For_val a (Csem.Kreturn k) (Kseq (Sreturn (Some a)) tk).(** Matching between continuations *)

Inductive match_cont : Csem.cont -> cont -> Prop :=
  | match_Kstop:
      match_cont Csem.Kstop Kstop
  | match_Kseq: forall s k ts tk,
      tr_stmt s ts ->
      match_cont k tk ->
      match_cont (Csem.Kseq s k) (Kseq ts tk)
  | match_Kwhile2: forall r s k s' ts tk,
      tr_if r Sskip Sbreak s' ->
      tr_stmt s ts ->
      match_cont k tk ->
      match_cont (Csem.Kwhile2 r s k)
                 (Kloop1 (Ssequence s' ts) Sskip tk)
  | match_Kdowhile1: forall r s k s' ts tk,
      tr_if r Sskip Sbreak s' ->
      tr_stmt s ts ->
      match_cont k tk ->
      match_cont (Csem.Kdowhile1 r s k)
                 (Kloop1 ts s' tk)
  | match_Kfor3: forall r s3 s k ts3 s' ts tk,
      tr_if r Sskip Sbreak s' ->
      tr_stmt s3 ts3 ->
      tr_stmt s ts ->
      match_cont k tk ->
      match_cont (Csem.Kfor3 r s3 s k)
                 (Kloop1 (Ssequence s' ts) ts3 tk)
  | match_Kfor4: forall r s3 s k ts3 s' ts tk,
      tr_if r Sskip Sbreak s' ->
      tr_stmt s3 ts3 ->
      tr_stmt s ts ->
      match_cont k tk ->
      match_cont (Csem.Kfor4 r s3 s k)
                 (Kloop2 (Ssequence s' ts) ts3 tk)
  | match_Kswitch2: forall k tk,
      match_cont k tk ->
      match_cont (Csem.Kswitch2 k) (Kswitch tk)
  | match_Kcall: forall f e C ty k optid tf le sl tk a dest tmps,
      tr_function f tf ->
      leftcontext RV RV C ->
      (forall v m, tr_top tge e (set_opttemp optid v le) m dest (C (Csyntax.Eval v ty)) sl a tmps) ->
      match_cont_exp dest a k tk ->
      match_cont (Csem.Kcall f e C ty k)
                 (Kcall optid tf e le (Kseqlist sl tk))
(*
  | match_Kcall_some: forall f e C ty k dst tf le sl tk a dest tmps,
      transl_function f = Errors.OK tf ->
      leftcontext RV RV C ->
      (forall v m, tr_top tge e (PTree.set dst v le) m dest (C (C.Eval v ty)) sl a tmps) ->
      match_cont_exp dest a k tk ->
      match_cont (Csem.Kcall f e C ty k)
                 (Kcall (Some dst) tf e le (Kseqlist sl tk))
*)

with match_cont_exp : destination -> expr -> Csem.cont -> cont -> Prop :=
  | match_Kdo: forall k a tk,
      match_cont k tk ->
      match_cont_exp For_effects a (Csem.Kdo k) tk
  | match_Kifthenelse_empty: forall a k tk,
      match_cont k tk ->
      match_cont_exp For_val a (Csem.Kifthenelse Csyntax.Sskip Csyntax.Sskip k) (Kseq Sskip tk)
  | match_Kifthenelse_1: forall a s1 s2 k ts1 ts2 tk,
      tr_stmt s1 ts1 -> tr_stmt s2 ts2 ->
      match_cont k tk ->
      match_cont_exp For_val a (Csem.Kifthenelse s1 s2 k) (Kseq (Sifthenelse a ts1 ts2) tk)
  | match_Kwhile1: forall r s k s' a ts tk,
      tr_if r Sskip Sbreak s' ->
      tr_stmt s ts ->
      match_cont k tk ->
      match_cont_exp For_val a
         (Csem.Kwhile1 r s k)
         (Kseq (makeif a Sskip Sbreak)
           (Kseq ts (Kloop1 (Ssequence s' ts) Sskip tk)))
  | match_Kdowhile2: forall r s k s' a ts tk,
      tr_if r Sskip Sbreak s' ->
      tr_stmt s ts ->
      match_cont k tk ->
      match_cont_exp For_val a
        (Csem.Kdowhile2 r s k)
        (Kseq (makeif a Sskip Sbreak) (Kloop2 ts s' tk))
  | match_Kfor2: forall r s3 s k s' a ts3 ts tk,
      tr_if r Sskip Sbreak s' ->
      tr_stmt s3 ts3 ->
      tr_stmt s ts ->
      match_cont k tk ->
      match_cont_exp For_val a
        (Csem.Kfor2 r s3 s k)
        (Kseq (makeif a Sskip Sbreak)
          (Kseq ts (Kloop1 (Ssequence s' ts) ts3 tk)))
  | match_Kswitch1: forall ls k a tls tk,
      tr_lblstmts ls tls ->
      match_cont k tk ->
      match_cont_exp For_val a (Csem.Kswitch1 ls k) (Kseq (Sswitch a tls) tk)
  | match_Kreturn: forall k a tk,
      match_cont k tk ->
      match_cont_exp For_val a (Csem.Kreturn k) (Kseq (Sreturn (Some a)) tk).(** Matching between continuations *)

Inductive match_cont : Csem.cont -> cont -> Prop :=
  | match_Kstop:
      match_cont Csem.Kstop Kstop
  | match_Kseq: forall s k ts tk,
      tr_stmt s ts ->
      match_cont k tk ->
      match_cont (Csem.Kseq s k) (Kseq ts tk)
  | match_Kwhile2: forall r s k s' ts tk,
      tr_if r Sskip Sbreak s' ->
      tr_stmt s ts ->
      match_cont k tk ->
      match_cont (Csem.Kwhile2 r s k)
                 (Kloop1 (Ssequence s' ts) Sskip tk)
  | match_Kdowhile1: forall r s k s' ts tk,
      tr_if r Sskip Sbreak s' ->
      tr_stmt s ts ->
      match_cont k tk ->
      match_cont (Csem.Kdowhile1 r s k)
                 (Kloop1 ts s' tk)
  | match_Kfor3: forall r s3 s k ts3 s' ts tk,
      tr_if r Sskip Sbreak s' ->
      tr_stmt s3 ts3 ->
      tr_stmt s ts ->
      match_cont k tk ->
      match_cont (Csem.Kfor3 r s3 s k)
                 (Kloop1 (Ssequence s' ts) ts3 tk)
  | match_Kfor4: forall r s3 s k ts3 s' ts tk,
      tr_if r Sskip Sbreak s' ->
      tr_stmt s3 ts3 ->
      tr_stmt s ts ->
      match_cont k tk ->
      match_cont (Csem.Kfor4 r s3 s k)
                 (Kloop2 (Ssequence s' ts) ts3 tk)
  | match_Kswitch2: forall k tk,
      match_cont k tk ->
      match_cont (Csem.Kswitch2 k) (Kswitch tk)
  | match_Kcall: forall f e C ty k optid tf le sl tk a dest tmps,
      tr_function f tf ->
      leftcontext RV RV C ->
      (forall v m, tr_top tge e (set_opttemp optid v le) m dest (C (Csyntax.Eval v ty)) sl a tmps) ->
      match_cont_exp dest a k tk ->
      match_cont (Csem.Kcall f e C ty k)
                 (Kcall optid tf e le (Kseqlist sl tk))
(*
  | match_Kcall_some: forall f e C ty k dst tf le sl tk a dest tmps,
      transl_function f = Errors.OK tf ->
      leftcontext RV RV C ->
      (forall v m, tr_top tge e (PTree.set dst v le) m dest (C (C.Eval v ty)) sl a tmps) ->
      match_cont_exp dest a k tk ->
      match_cont (Csem.Kcall f e C ty k)
                 (Kcall (Some dst) tf e le (Kseqlist sl tk))
*)

with match_cont_exp : destination -> expr -> Csem.cont -> cont -> Prop :=
  | match_Kdo: forall k a tk,
      match_cont k tk ->
      match_cont_exp For_effects a (Csem.Kdo k) tk
  | match_Kifthenelse_empty: forall a k tk,
      match_cont k tk ->
      match_cont_exp For_val a (Csem.Kifthenelse Csyntax.Sskip Csyntax.Sskip k) (Kseq Sskip tk)
  | match_Kifthenelse_1: forall a s1 s2 k ts1 ts2 tk,
      tr_stmt s1 ts1 -> tr_stmt s2 ts2 ->
      match_cont k tk ->
      match_cont_exp For_val a (Csem.Kifthenelse s1 s2 k) (Kseq (Sifthenelse a ts1 ts2) tk)
  | match_Kwhile1: forall r s k s' a ts tk,
      tr_if r Sskip Sbreak s' ->
      tr_stmt s ts ->
      match_cont k tk ->
      match_cont_exp For_val a
         (Csem.Kwhile1 r s k)
         (Kseq (makeif a Sskip Sbreak)
           (Kseq ts (Kloop1 (Ssequence s' ts) Sskip tk)))
  | match_Kdowhile2: forall r s k s' a ts tk,
      tr_if r Sskip Sbreak s' ->
      tr_stmt s ts ->
      match_cont k tk ->
      match_cont_exp For_val a
        (Csem.Kdowhile2 r s k)
        (Kseq (makeif a Sskip Sbreak) (Kloop2 ts s' tk))
  | match_Kfor2: forall r s3 s k s' a ts3 ts tk,
      tr_if r Sskip Sbreak s' ->
      tr_stmt s3 ts3 ->
      tr_stmt s ts ->
      match_cont k tk ->
      match_cont_exp For_val a
        (Csem.Kfor2 r s3 s k)
        (Kseq (makeif a Sskip Sbreak)
          (Kseq ts (Kloop1 (Ssequence s' ts) ts3 tk)))
  | match_Kswitch1: forall ls k a tls tk,
      tr_lblstmts ls tls ->
      match_cont k tk ->
      match_cont_exp For_val a (Csem.Kswitch1 ls k) (Kseq (Sswitch a tls) tk)
  | match_Kreturn: forall k a tk,
      match_cont k tk ->
      match_cont_exp For_val a (Csem.Kreturn k) (Kseq (Sreturn (Some a)) tk).(** Matching between continuations *)

Inductive match_cont : Csem.cont -> cont -> Prop :=
  | match_Kstop:
      match_cont Csem.Kstop Kstop
  | match_Kseq: forall s k ts tk,
      tr_stmt s ts ->
      match_cont k tk ->
      match_cont (Csem.Kseq s k) (Kseq ts tk)
  | match_Kwhile2: forall r s k s' ts tk,
      tr_if r Sskip Sbreak s' ->
      tr_stmt s ts ->
      match_cont k tk ->
      match_cont (Csem.Kwhile2 r s k)
                 (Kloop1 (Ssequence s' ts) Sskip tk)
  | match_Kdowhile1: forall r s k s' ts tk,
      tr_if r Sskip Sbreak s' ->
      tr_stmt s ts ->
      match_cont k tk ->
      match_cont (Csem.Kdowhile1 r s k)
                 (Kloop1 ts s' tk)
  | match_Kfor3: forall r s3 s k ts3 s' ts tk,
      tr_if r Sskip Sbreak s' ->
      tr_stmt s3 ts3 ->
      tr_stmt s ts ->
      match_cont k tk ->
      match_cont (Csem.Kfor3 r s3 s k)
                 (Kloop1 (Ssequence s' ts) ts3 tk)
  | match_Kfor4: forall r s3 s k ts3 s' ts tk,
      tr_if r Sskip Sbreak s' ->
      tr_stmt s3 ts3 ->
      tr_stmt s ts ->
      match_cont k tk ->
      match_cont (Csem.Kfor4 r s3 s k)
                 (Kloop2 (Ssequence s' ts) ts3 tk)
  | match_Kswitch2: forall k tk,
      match_cont k tk ->
      match_cont (Csem.Kswitch2 k) (Kswitch tk)
  | match_Kcall: forall f e C ty k optid tf le sl tk a dest tmps,
      tr_function f tf ->
      leftcontext RV RV C ->
      (forall v m, tr_top tge e (set_opttemp optid v le) m dest (C (Csyntax.Eval v ty)) sl a tmps) ->
      match_cont_exp dest a k tk ->
      match_cont (Csem.Kcall f e C ty k)
                 (Kcall optid tf e le (Kseqlist sl tk))
(*
  | match_Kcall_some: forall f e C ty k dst tf le sl tk a dest tmps,
      transl_function f = Errors.OK tf ->
      leftcontext RV RV C ->
      (forall v m, tr_top tge e (PTree.set dst v le) m dest (C (C.Eval v ty)) sl a tmps) ->
      match_cont_exp dest a k tk ->
      match_cont (Csem.Kcall f e C ty k)
                 (Kcall (Some dst) tf e le (Kseqlist sl tk))
*)

with match_cont_exp : destination -> expr -> Csem.cont -> cont -> Prop :=
  | match_Kdo: forall k a tk,
      match_cont k tk ->
      match_cont_exp For_effects a (Csem.Kdo k) tk
  | match_Kifthenelse_empty: forall a k tk,
      match_cont k tk ->
      match_cont_exp For_val a (Csem.Kifthenelse Csyntax.Sskip Csyntax.Sskip k) (Kseq Sskip tk)
  | match_Kifthenelse_1: forall a s1 s2 k ts1 ts2 tk,
      tr_stmt s1 ts1 -> tr_stmt s2 ts2 ->
      match_cont k tk ->
      match_cont_exp For_val a (Csem.Kifthenelse s1 s2 k) (Kseq (Sifthenelse a ts1 ts2) tk)
  | match_Kwhile1: forall r s k s' a ts tk,
      tr_if r Sskip Sbreak s' ->
      tr_stmt s ts ->
      match_cont k tk ->
      match_cont_exp For_val a
         (Csem.Kwhile1 r s k)
         (Kseq (makeif a Sskip Sbreak)
           (Kseq ts (Kloop1 (Ssequence s' ts) Sskip tk)))
  | match_Kdowhile2: forall r s k s' a ts tk,
      tr_if r Sskip Sbreak s' ->
      tr_stmt s ts ->
      match_cont k tk ->
      match_cont_exp For_val a
        (Csem.Kdowhile2 r s k)
        (Kseq (makeif a Sskip Sbreak) (Kloop2 ts s' tk))
  | match_Kfor2: forall r s3 s k s' a ts3 ts tk,
      tr_if r Sskip Sbreak s' ->
      tr_stmt s3 ts3 ->
      tr_stmt s ts ->
      match_cont k tk ->
      match_cont_exp For_val a
        (Csem.Kfor2 r s3 s k)
        (Kseq (makeif a Sskip Sbreak)
          (Kseq ts (Kloop1 (Ssequence s' ts) ts3 tk)))
  | match_Kswitch1: forall ls k a tls tk,
      tr_lblstmts ls tls ->
      match_cont k tk ->
      match_cont_exp For_val a (Csem.Kswitch1 ls k) (Kseq (Sswitch a tls) tk)
  | match_Kreturn: forall k a tk,
      match_cont k tk ->
      match_cont_exp For_val a (Csem.Kreturn k) (Kseq (Sreturn (Some a)) tk).(** Matching between continuations *)

Inductive match_cont : Csem.cont -> cont -> Prop :=
  | match_Kstop:
      match_cont Csem.Kstop Kstop
  | match_Kseq: forall s k ts tk,
      tr_stmt s ts ->
      match_cont k tk ->
      match_cont (Csem.Kseq s k) (Kseq ts tk)
  | match_Kwhile2: forall r s k s' ts tk,
      tr_if r Sskip Sbreak s' ->
      tr_stmt s ts ->
      match_cont k tk ->
      match_cont (Csem.Kwhile2 r s k)
                 (Kloop1 (Ssequence s' ts) Sskip tk)
  | match_Kdowhile1: forall r s k s' ts tk,
      tr_if r Sskip Sbreak s' ->
      tr_stmt s ts ->
      match_cont k tk ->
      match_cont (Csem.Kdowhile1 r s k)
                 (Kloop1 ts s' tk)
  | match_Kfor3: forall r s3 s k ts3 s' ts tk,
      tr_if r Sskip Sbreak s' ->
      tr_stmt s3 ts3 ->
      tr_stmt s ts ->
      match_cont k tk ->
      match_cont (Csem.Kfor3 r s3 s k)
                 (Kloop1 (Ssequence s' ts) ts3 tk)
  | match_Kfor4: forall r s3 s k ts3 s' ts tk,
      tr_if r Sskip Sbreak s' ->
      tr_stmt s3 ts3 ->
      tr_stmt s ts ->
      match_cont k tk ->
      match_cont (Csem.Kfor4 r s3 s k)
                 (Kloop2 (Ssequence s' ts) ts3 tk)
  | match_Kswitch2: forall k tk,
      match_cont k tk ->
      match_cont (Csem.Kswitch2 k) (Kswitch tk)
  | match_Kcall: forall f e C ty k optid tf le sl tk a dest tmps,
      tr_function f tf ->
      leftcontext RV RV C ->
      (forall v m, tr_top tge e (set_opttemp optid v le) m dest (C (Csyntax.Eval v ty)) sl a tmps) ->
      match_cont_exp dest a k tk ->
      match_cont (Csem.Kcall f e C ty k)
                 (Kcall optid tf e le (Kseqlist sl tk))
(*
  | match_Kcall_some: forall f e C ty k dst tf le sl tk a dest tmps,
      transl_function f = Errors.OK tf ->
      leftcontext RV RV C ->
      (forall v m, tr_top tge e (PTree.set dst v le) m dest (C (C.Eval v ty)) sl a tmps) ->
      match_cont_exp dest a k tk ->
      match_cont (Csem.Kcall f e C ty k)
                 (Kcall (Some dst) tf e le (Kseqlist sl tk))
*)

with match_cont_exp : destination -> expr -> Csem.cont -> cont -> Prop :=
  | match_Kdo: forall k a tk,
      match_cont k tk ->
      match_cont_exp For_effects a (Csem.Kdo k) tk
  | match_Kifthenelse_empty: forall a k tk,
      match_cont k tk ->
      match_cont_exp For_val a (Csem.Kifthenelse Csyntax.Sskip Csyntax.Sskip k) (Kseq Sskip tk)
  | match_Kifthenelse_1: forall a s1 s2 k ts1 ts2 tk,
      tr_stmt s1 ts1 -> tr_stmt s2 ts2 ->
      match_cont k tk ->
      match_cont_exp For_val a (Csem.Kifthenelse s1 s2 k) (Kseq (Sifthenelse a ts1 ts2) tk)
  | match_Kwhile1: forall r s k s' a ts tk,
      tr_if r Sskip Sbreak s' ->
      tr_stmt s ts ->
      match_cont k tk ->
      match_cont_exp For_val a
         (Csem.Kwhile1 r s k)
         (Kseq (makeif a Sskip Sbreak)
           (Kseq ts (Kloop1 (Ssequence s' ts) Sskip tk)))
  | match_Kdowhile2: forall r s k s' a ts tk,
      tr_if r Sskip Sbreak s' ->
      tr_stmt s ts ->
      match_cont k tk ->
      match_cont_exp For_val a
        (Csem.Kdowhile2 r s k)
        (Kseq (makeif a Sskip Sbreak) (Kloop2 ts s' tk))
  | match_Kfor2: forall r s3 s k s' a ts3 ts tk,
      tr_if r Sskip Sbreak s' ->
      tr_stmt s3 ts3 ->
      tr_stmt s ts ->
      match_cont k tk ->
      match_cont_exp For_val a
        (Csem.Kfor2 r s3 s k)
        (Kseq (makeif a Sskip Sbreak)
          (Kseq ts (Kloop1 (Ssequence s' ts) ts3 tk)))
  | match_Kswitch1: forall ls k a tls tk,
      tr_lblstmts ls tls ->
      match_cont k tk ->
      match_cont_exp For_val a (Csem.Kswitch1 ls k) (Kseq (Sswitch a tls) tk)
  | match_Kreturn: forall k a tk,
      match_cont k tk ->
      match_cont_exp For_val a (Csem.Kreturn k) (Kseq (Sreturn (Some a)) tk).(** Matching between continuations *)

Inductive match_cont : Csem.cont -> cont -> Prop :=
  | match_Kstop:
      match_cont Csem.Kstop Kstop
  | match_Kseq: forall s k ts tk,
      tr_stmt s ts ->
      match_cont k tk ->
      match_cont (Csem.Kseq s k) (Kseq ts tk)
  | match_Kwhile2: forall r s k s' ts tk,
      tr_if r Sskip Sbreak s' ->
      tr_stmt s ts ->
      match_cont k tk ->
      match_cont (Csem.Kwhile2 r s k)
                 (Kloop1 (Ssequence s' ts) Sskip tk)
  | match_Kdowhile1: forall r s k s' ts tk,
      tr_if r Sskip Sbreak s' ->
      tr_stmt s ts ->
      match_cont k tk ->
      match_cont (Csem.Kdowhile1 r s k)
                 (Kloop1 ts s' tk)
  | match_Kfor3: forall r s3 s k ts3 s' ts tk,
      tr_if r Sskip Sbreak s' ->
      tr_stmt s3 ts3 ->
      tr_stmt s ts ->
      match_cont k tk ->
      match_cont (Csem.Kfor3 r s3 s k)
                 (Kloop1 (Ssequence s' ts) ts3 tk)
  | match_Kfor4: forall r s3 s k ts3 s' ts tk,
      tr_if r Sskip Sbreak s' ->
      tr_stmt s3 ts3 ->
      tr_stmt s ts ->
      match_cont k tk ->
      match_cont (Csem.Kfor4 r s3 s k)
                 (Kloop2 (Ssequence s' ts) ts3 tk)
  | match_Kswitch2: forall k tk,
      match_cont k tk ->
      match_cont (Csem.Kswitch2 k) (Kswitch tk)
  | match_Kcall: forall f e C ty k optid tf le sl tk a dest tmps,
      tr_function f tf ->
      leftcontext RV RV C ->
      (forall v m, tr_top tge e (set_opttemp optid v le) m dest (C (Csyntax.Eval v ty)) sl a tmps) ->
      match_cont_exp dest a k tk ->
      match_cont (Csem.Kcall f e C ty k)
                 (Kcall optid tf e le (Kseqlist sl tk))
(*
  | match_Kcall_some: forall f e C ty k dst tf le sl tk a dest tmps,
      transl_function f = Errors.OK tf ->
      leftcontext RV RV C ->
      (forall v m, tr_top tge e (PTree.set dst v le) m dest (C (C.Eval v ty)) sl a tmps) ->
      match_cont_exp dest a k tk ->
      match_cont (Csem.Kcall f e C ty k)
                 (Kcall (Some dst) tf e le (Kseqlist sl tk))
*)

with match_cont_exp : destination -> expr -> Csem.cont -> cont -> Prop :=
  | match_Kdo: forall k a tk,
      match_cont k tk ->
      match_cont_exp For_effects a (Csem.Kdo k) tk
  | match_Kifthenelse_empty: forall a k tk,
      match_cont k tk ->
      match_cont_exp For_val a (Csem.Kifthenelse Csyntax.Sskip Csyntax.Sskip k) (Kseq Sskip tk)
  | match_Kifthenelse_1: forall a s1 s2 k ts1 ts2 tk,
      tr_stmt s1 ts1 -> tr_stmt s2 ts2 ->
      match_cont k tk ->
      match_cont_exp For_val a (Csem.Kifthenelse s1 s2 k) (Kseq (Sifthenelse a ts1 ts2) tk)
  | match_Kwhile1: forall r s k s' a ts tk,
      tr_if r Sskip Sbreak s' ->
      tr_stmt s ts ->
      match_cont k tk ->
      match_cont_exp For_val a
         (Csem.Kwhile1 r s k)
         (Kseq (makeif a Sskip Sbreak)
           (Kseq ts (Kloop1 (Ssequence s' ts) Sskip tk)))
  | match_Kdowhile2: forall r s k s' a ts tk,
      tr_if r Sskip Sbreak s' ->
      tr_stmt s ts ->
      match_cont k tk ->
      match_cont_exp For_val a
        (Csem.Kdowhile2 r s k)
        (Kseq (makeif a Sskip Sbreak) (Kloop2 ts s' tk))
  | match_Kfor2: forall r s3 s k s' a ts3 ts tk,
      tr_if r Sskip Sbreak s' ->
      tr_stmt s3 ts3 ->
      tr_stmt s ts ->
      match_cont k tk ->
      match_cont_exp For_val a
        (Csem.Kfor2 r s3 s k)
        (Kseq (makeif a Sskip Sbreak)
          (Kseq ts (Kloop1 (Ssequence s' ts) ts3 tk)))
  | match_Kswitch1: forall ls k a tls tk,
      tr_lblstmts ls tls ->
      match_cont k tk ->
      match_cont_exp For_val a (Csem.Kswitch1 ls k) (Kseq (Sswitch a tls) tk)
  | match_Kreturn: forall k a tk,
      match_cont k tk ->
      match_cont_exp For_val a (Csem.Kreturn k) (Kseq (Sreturn (Some a)) tk).(** Matching between continuations *)

Inductive match_cont : Csem.cont -> cont -> Prop :=
  | match_Kstop:
      match_cont Csem.Kstop Kstop
  | match_Kseq: forall s k ts tk,
      tr_stmt s ts ->
      match_cont k tk ->
      match_cont (Csem.Kseq s k) (Kseq ts tk)
  | match_Kwhile2: forall r s k s' ts tk,
      tr_if r Sskip Sbreak s' ->
      tr_stmt s ts ->
      match_cont k tk ->
      match_cont (Csem.Kwhile2 r s k)
                 (Kloop1 (Ssequence s' ts) Sskip tk)
  | match_Kdowhile1: forall r s k s' ts tk,
      tr_if r Sskip Sbreak s' ->
      tr_stmt s ts ->
      match_cont k tk ->
      match_cont (Csem.Kdowhile1 r s k)
                 (Kloop1 ts s' tk)
  | match_Kfor3: forall r s3 s k ts3 s' ts tk,
      tr_if r Sskip Sbreak s' ->
      tr_stmt s3 ts3 ->
      tr_stmt s ts ->
      match_cont k tk ->
      match_cont (Csem.Kfor3 r s3 s k)
                 (Kloop1 (Ssequence s' ts) ts3 tk)
  | match_Kfor4: forall r s3 s k ts3 s' ts tk,
      tr_if r Sskip Sbreak s' ->
      tr_stmt s3 ts3 ->
      tr_stmt s ts ->
      match_cont k tk ->
      match_cont (Csem.Kfor4 r s3 s k)
                 (Kloop2 (Ssequence s' ts) ts3 tk)
  | match_Kswitch2: forall k tk,
      match_cont k tk ->
      match_cont (Csem.Kswitch2 k) (Kswitch tk)
  | match_Kcall: forall f e C ty k optid tf le sl tk a dest tmps,
      tr_function f tf ->
      leftcontext RV RV C ->
      (forall v m, tr_top tge e (set_opttemp optid v le) m dest (C (Csyntax.Eval v ty)) sl a tmps) ->
      match_cont_exp dest a k tk ->
      match_cont (Csem.Kcall f e C ty k)
                 (Kcall optid tf e le (Kseqlist sl tk))
(*
  | match_Kcall_some: forall f e C ty k dst tf le sl tk a dest tmps,
      transl_function f = Errors.OK tf ->
      leftcontext RV RV C ->
      (forall v m, tr_top tge e (PTree.set dst v le) m dest (C (C.Eval v ty)) sl a tmps) ->
      match_cont_exp dest a k tk ->
      match_cont (Csem.Kcall f e C ty k)
                 (Kcall (Some dst) tf e le (Kseqlist sl tk))
*)

with match_cont_exp : destination -> expr -> Csem.cont -> cont -> Prop :=
  | match_Kdo: forall k a tk,
      match_cont k tk ->
      match_cont_exp For_effects a (Csem.Kdo k) tk
  | match_Kifthenelse_empty: forall a k tk,
      match_cont k tk ->
      match_cont_exp For_val a (Csem.Kifthenelse Csyntax.Sskip Csyntax.Sskip k) (Kseq Sskip tk)
  | match_Kifthenelse_1: forall a s1 s2 k ts1 ts2 tk,
      tr_stmt s1 ts1 -> tr_stmt s2 ts2 ->
      match_cont k tk ->
      match_cont_exp For_val a (Csem.Kifthenelse s1 s2 k) (Kseq (Sifthenelse a ts1 ts2) tk)
  | match_Kwhile1: forall r s k s' a ts tk,
      tr_if r Sskip Sbreak s' ->
      tr_stmt s ts ->
      match_cont k tk ->
      match_cont_exp For_val a
         (Csem.Kwhile1 r s k)
         (Kseq (makeif a Sskip Sbreak)
           (Kseq ts (Kloop1 (Ssequence s' ts) Sskip tk)))
  | match_Kdowhile2: forall r s k s' a ts tk,
      tr_if r Sskip Sbreak s' ->
      tr_stmt s ts ->
      match_cont k tk ->
      match_cont_exp For_val a
        (Csem.Kdowhile2 r s k)
        (Kseq (makeif a Sskip Sbreak) (Kloop2 ts s' tk))
  | match_Kfor2: forall r s3 s k s' a ts3 ts tk,
      tr_if r Sskip Sbreak s' ->
      tr_stmt s3 ts3 ->
      tr_stmt s ts ->
      match_cont k tk ->
      match_cont_exp For_val a
        (Csem.Kfor2 r s3 s k)
        (Kseq (makeif a Sskip Sbreak)
          (Kseq ts (Kloop1 (Ssequence s' ts) ts3 tk)))
  | match_Kswitch1: forall ls k a tls tk,
      tr_lblstmts ls tls ->
      match_cont k tk ->
      match_cont_exp For_val a (Csem.Kswitch1 ls k) (Kseq (Sswitch a tls) tk)
  | match_Kreturn: forall k a tk,
      match_cont k tk ->
      match_cont_exp For_val a (Csem.Kreturn k) (Kseq (Sreturn (Some a)) tk).(** Matching between continuations *)

Inductive match_cont : Csem.cont -> cont -> Prop :=
  | match_Kstop:
      match_cont Csem.Kstop Kstop
  | match_Kseq: forall s k ts tk,
      tr_stmt s ts ->
      match_cont k tk ->
      match_cont (Csem.Kseq s k) (Kseq ts tk)
  | match_Kwhile2: forall r s k s' ts tk,
      tr_if r Sskip Sbreak s' ->
      tr_stmt s ts ->
      match_cont k tk ->
      match_cont (Csem.Kwhile2 r s k)
                 (Kloop1 (Ssequence s' ts) Sskip tk)
  | match_Kdowhile1: forall r s k s' ts tk,
      tr_if r Sskip Sbreak s' ->
      tr_stmt s ts ->
      match_cont k tk ->
      match_cont (Csem.Kdowhile1 r s k)
                 (Kloop1 ts s' tk)
  | match_Kfor3: forall r s3 s k ts3 s' ts tk,
      tr_if r Sskip Sbreak s' ->
      tr_stmt s3 ts3 ->
      tr_stmt s ts ->
      match_cont k tk ->
      match_cont (Csem.Kfor3 r s3 s k)
                 (Kloop1 (Ssequence s' ts) ts3 tk)
  | match_Kfor4: forall r s3 s k ts3 s' ts tk,
      tr_if r Sskip Sbreak s' ->
      tr_stmt s3 ts3 ->
      tr_stmt s ts ->
      match_cont k tk ->
      match_cont (Csem.Kfor4 r s3 s k)
                 (Kloop2 (Ssequence s' ts) ts3 tk)
  | match_Kswitch2: forall k tk,
      match_cont k tk ->
      match_cont (Csem.Kswitch2 k) (Kswitch tk)
  | match_Kcall: forall f e C ty k optid tf le sl tk a dest tmps,
      tr_function f tf ->
      leftcontext RV RV C ->
      (forall v m, tr_top tge e (set_opttemp optid v le) m dest (C (Csyntax.Eval v ty)) sl a tmps) ->
      match_cont_exp dest a k tk ->
      match_cont (Csem.Kcall f e C ty k)
                 (Kcall optid tf e le (Kseqlist sl tk))
(*
  | match_Kcall_some: forall f e C ty k dst tf le sl tk a dest tmps,
      transl_function f = Errors.OK tf ->
      leftcontext RV RV C ->
      (forall v m, tr_top tge e (PTree.set dst v le) m dest (C (C.Eval v ty)) sl a tmps) ->
      match_cont_exp dest a k tk ->
      match_cont (Csem.Kcall f e C ty k)
                 (Kcall (Some dst) tf e le (Kseqlist sl tk))
*)

with match_cont_exp : destination -> expr -> Csem.cont -> cont -> Prop :=
  | match_Kdo: forall k a tk,
      match_cont k tk ->
      match_cont_exp For_effects a (Csem.Kdo k) tk
  | match_Kifthenelse_empty: forall a k tk,
      match_cont k tk ->
      match_cont_exp For_val a (Csem.Kifthenelse Csyntax.Sskip Csyntax.Sskip k) (Kseq Sskip tk)
  | match_Kifthenelse_1: forall a s1 s2 k ts1 ts2 tk,
      tr_stmt s1 ts1 -> tr_stmt s2 ts2 ->
      match_cont k tk ->
      match_cont_exp For_val a (Csem.Kifthenelse s1 s2 k) (Kseq (Sifthenelse a ts1 ts2) tk)
  | match_Kwhile1: forall r s k s' a ts tk,
      tr_if r Sskip Sbreak s' ->
      tr_stmt s ts ->
      match_cont k tk ->
      match_cont_exp For_val a
         (Csem.Kwhile1 r s k)
         (Kseq (makeif a Sskip Sbreak)
           (Kseq ts (Kloop1 (Ssequence s' ts) Sskip tk)))
  | match_Kdowhile2: forall r s k s' a ts tk,
      tr_if r Sskip Sbreak s' ->
      tr_stmt s ts ->
      match_cont k tk ->
      match_cont_exp For_val a
        (Csem.Kdowhile2 r s k)
        (Kseq (makeif a Sskip Sbreak) (Kloop2 ts s' tk))
  | match_Kfor2: forall r s3 s k s' a ts3 ts tk,
      tr_if r Sskip Sbreak s' ->
      tr_stmt s3 ts3 ->
      tr_stmt s ts ->
      match_cont k tk ->
      match_cont_exp For_val a
        (Csem.Kfor2 r s3 s k)
        (Kseq (makeif a Sskip Sbreak)
          (Kseq ts (Kloop1 (Ssequence s' ts) ts3 tk)))
  | match_Kswitch1: forall ls k a tls tk,
      tr_lblstmts ls tls ->
      match_cont k tk ->
      match_cont_exp For_val a (Csem.Kswitch1 ls k) (Kseq (Sswitch a tls) tk)
  | match_Kreturn: forall k a tk,
      match_cont k tk ->
      match_cont_exp For_val a (Csem.Kreturn k) (Kseq (Sreturn (Some a)) tk).(** Matching between continuations *)

Inductive match_cont : Csem.cont -> cont -> Prop :=
  | match_Kstop:
      match_cont Csem.Kstop Kstop
  | match_Kseq: forall s k ts tk,
      tr_stmt s ts ->
      match_cont k tk ->
      match_cont (Csem.Kseq s k) (Kseq ts tk)
  | match_Kwhile2: forall r s k s' ts tk,
      tr_if r Sskip Sbreak s' ->
      tr_stmt s ts ->
      match_cont k tk ->
      match_cont (Csem.Kwhile2 r s k)
                 (Kloop1 (Ssequence s' ts) Sskip tk)
  | match_Kdowhile1: forall r s k s' ts tk,
      tr_if r Sskip Sbreak s' ->
      tr_stmt s ts ->
      match_cont k tk ->
      match_cont (Csem.Kdowhile1 r s k)
                 (Kloop1 ts s' tk)
  | match_Kfor3: forall r s3 s k ts3 s' ts tk,
      tr_if r Sskip Sbreak s' ->
      tr_stmt s3 ts3 ->
      tr_stmt s ts ->
      match_cont k tk ->
      match_cont (Csem.Kfor3 r s3 s k)
                 (Kloop1 (Ssequence s' ts) ts3 tk)
  | match_Kfor4: forall r s3 s k ts3 s' ts tk,
      tr_if r Sskip Sbreak s' ->
      tr_stmt s3 ts3 ->
      tr_stmt s ts ->
      match_cont k tk ->
      match_cont (Csem.Kfor4 r s3 s k)
                 (Kloop2 (Ssequence s' ts) ts3 tk)
  | match_Kswitch2: forall k tk,
      match_cont k tk ->
      match_cont (Csem.Kswitch2 k) (Kswitch tk)
  | match_Kcall: forall f e C ty k optid tf le sl tk a dest tmps,
      tr_function f tf ->
      leftcontext RV RV C ->
      (forall v m, tr_top tge e (set_opttemp optid v le) m dest (C (Csyntax.Eval v ty)) sl a tmps) ->
      match_cont_exp dest a k tk ->
      match_cont (Csem.Kcall f e C ty k)
                 (Kcall optid tf e le (Kseqlist sl tk))
(*
  | match_Kcall_some: forall f e C ty k dst tf le sl tk a dest tmps,
      transl_function f = Errors.OK tf ->
      leftcontext RV RV C ->
      (forall v m, tr_top tge e (PTree.set dst v le) m dest (C (C.Eval v ty)) sl a tmps) ->
      match_cont_exp dest a k tk ->
      match_cont (Csem.Kcall f e C ty k)
                 (Kcall (Some dst) tf e le (Kseqlist sl tk))
*)

with match_cont_exp : destination -> expr -> Csem.cont -> cont -> Prop :=
  | match_Kdo: forall k a tk,
      match_cont k tk ->
      match_cont_exp For_effects a (Csem.Kdo k) tk
  | match_Kifthenelse_empty: forall a k tk,
      match_cont k tk ->
      match_cont_exp For_val a (Csem.Kifthenelse Csyntax.Sskip Csyntax.Sskip k) (Kseq Sskip tk)
  | match_Kifthenelse_1: forall a s1 s2 k ts1 ts2 tk,
      tr_stmt s1 ts1 -> tr_stmt s2 ts2 ->
      match_cont k tk ->
      match_cont_exp For_val a (Csem.Kifthenelse s1 s2 k) (Kseq (Sifthenelse a ts1 ts2) tk)
  | match_Kwhile1: forall r s k s' a ts tk,
      tr_if r Sskip Sbreak s' ->
      tr_stmt s ts ->
      match_cont k tk ->
      match_cont_exp For_val a
         (Csem.Kwhile1 r s k)
         (Kseq (makeif a Sskip Sbreak)
           (Kseq ts (Kloop1 (Ssequence s' ts) Sskip tk)))
  | match_Kdowhile2: forall r s k s' a ts tk,
      tr_if r Sskip Sbreak s' ->
      tr_stmt s ts ->
      match_cont k tk ->
      match_cont_exp For_val a
        (Csem.Kdowhile2 r s k)
        (Kseq (makeif a Sskip Sbreak) (Kloop2 ts s' tk))
  | match_Kfor2: forall r s3 s k s' a ts3 ts tk,
      tr_if r Sskip Sbreak s' ->
      tr_stmt s3 ts3 ->
      tr_stmt s ts ->
      match_cont k tk ->
      match_cont_exp For_val a
        (Csem.Kfor2 r s3 s k)
        (Kseq (makeif a Sskip Sbreak)
          (Kseq ts (Kloop1 (Ssequence s' ts) ts3 tk)))
  | match_Kswitch1: forall ls k a tls tk,
      tr_lblstmts ls tls ->
      match_cont k tk ->
      match_cont_exp For_val a (Csem.Kswitch1 ls k) (Kseq (Sswitch a tls) tk)
  | match_Kreturn: forall k a tk,
      match_cont k tk ->
      match_cont_exp For_val a (Csem.Kreturn k) (Kseq (Sreturn (Some a)) tk).

Lemma match_cont_call: forall k tk, match_cont k tk -> match_cont (Csem.call_cont k) (call_cont tk).