diff options
Diffstat (limited to 'ia32/SelectOp.vp')
-rw-r--r-- | ia32/SelectOp.vp | 13 |
1 files changed, 12 insertions, 1 deletions
diff --git a/ia32/SelectOp.vp b/ia32/SelectOp.vp index 209147e3..1471405e 100644 --- a/ia32/SelectOp.vp +++ b/ia32/SelectOp.vp @@ -334,7 +334,18 @@ Definition absf (e: expr) := Eop Oabsf (e ::: Enil). Definition addf (e1 e2: expr) := Eop Oaddf (e1 ::: e2 ::: Enil). Definition subf (e1 e2: expr) := Eop Osubf (e1 ::: e2 ::: Enil). Definition mulf (e1 e2: expr) := Eop Omulf (e1 ::: e2 ::: Enil). -Definition divf (e1 e2: expr) := Eop Odivf (e1 ::: e2 ::: Enil). + +Definition divfimm (e: expr) (n: float) := + match Float.exact_inverse n with + | Some n' => Eop Omulf (e ::: Eop (Ofloatconst n') Enil ::: Enil) + | None => Eop Odivf (e ::: Eop (Ofloatconst n) Enil ::: Enil) + end. + +Nondetfunction divf (e1: expr) (e2: expr) := + match e2 with + | Eop (Ofloatconst n2) Enil => divfimm e1 n2 + | _ => Eop Odivf (e1 ::: e2 ::: Enil) + end. (** ** Comparisons *) |