2016-02-18 07:11:59 -08:00
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(**************************************************************************)
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(* *)
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(* OCaml *)
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(* *)
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(* Xavier Leroy, projet Gallium, INRIA Rocquencourt *)
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(* Bill O'Farrell, IBM *)
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(* *)
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(* Copyright 2015 Institut National de Recherche en Informatique et *)
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(* en Automatique. *)
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(* Copyright 2015 IBM (Bill O'Farrell with help from Tristan Amini). *)
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(* *)
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(* All rights reserved. This file is distributed under the terms of *)
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(* the GNU Lesser General Public License version 2.1, with the *)
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(* special exception on linking described in the file LICENSE. *)
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(* *)
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(**************************************************************************)
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2015-10-28 07:41:31 -07:00
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(* CSE for the Z Processor *)
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open Arch
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open Mach
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open CSEgen
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2016-03-09 02:40:16 -08:00
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class cse = object
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2015-10-28 07:41:31 -07:00
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inherit cse_generic as super
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method! class_of_operation op =
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match op with
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| Ispecific(Imultaddf | Imultsubf) -> Op_pure
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| _ -> super#class_of_operation op
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method! is_cheap_operation op =
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match op with
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2015-11-01 03:30:30 -08:00
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| Iconst_int n | Iconst_blockheader n ->
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n >= -0x8000_0000n && n <= 0x7FFF_FFFFn
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2015-10-28 07:41:31 -07:00
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| _ -> false
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end
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let fundecl f =
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(new cse)#fundecl f
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