blob: 6bea76f1a1cb48a42f4af8329eaa5ff9097bdb9e (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
|
(***********************************************************************)
(* *)
(* OCaml *)
(* *)
(* Xavier Leroy, projet Gallium, INRIA Rocquencourt *)
(* *)
(* Copyright 2014 Institut National de Recherche en Informatique et *)
(* en Automatique. All rights reserved. This file is distributed *)
(* under the terms of the Q Public License version 1.0. *)
(* *)
(***********************************************************************)
(* CSE for the i386 *)
open Cmm
open Arch
open Mach
open CSEgen
class cse = object (self)
inherit cse_generic as super
method! class_of_operation op =
match op with
(* Operations that affect the floating-point stack cannot be factored *)
| Iconst_float _ | Inegf | Iabsf | Iaddf | Isubf | Imulf | Idivf
| Iintoffloat | Ifloatofint
| Iload((Single | Double | Double_u), _) -> Op_other
(* Specific ops *)
| Ispecific(Ilea _) -> Op_pure
| Ispecific(Istore_int(_, _, is_asg)) -> Op_store is_asg
| Ispecific(Istore_symbol(_, _, is_asg)) -> Op_store is_asg
| Ispecific(Ioffset_loc(_, _)) -> Op_store true
| Ispecific _ -> Op_other
| _ -> super#class_of_operation op
method! is_cheap_operation op =
match op with
| Iconst_int _ | Iconst_blockheader _ -> true
| Iconst_symbol _ -> true
| _ -> false
end
let fundecl f =
(new cse)#fundecl f
|
