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(*
*
* Copyright (c) 2001-2002,
* George C. Necula <necula@cs.berkeley.edu>
* Scott McPeak <smcpeak@cs.berkeley.edu>
* Wes Weimer <weimer@cs.berkeley.edu>
* Ben Liblit <liblit@cs.berkeley.edu>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* 3. The names of the contributors may not be used to endorse or promote
* products derived from this software without specific prior written
* permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
* IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
* PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
* OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
*)
(* rmtmps.mli *)
(* remove unused things from cil files: *)
(* - local temporaries introduced but not used *)
(* - global declarations that are not used *)
(* - types that are not used *)
(* - labels that are not used (gn) *)
(* Some clients may wish to augment or replace the standard strategy
* for finding the initially reachable roots. The optional
* "isRoot" argument to Rmtmps.removeUnusedTemps grants this
* flexibility. If given, it should name a function which will return
* true if a given global should be treated as a retained root.
*
* Function Rmtmps.isDefaultRoot encapsulates the default root
* collection, which consists of those global variables and functions
* which are visible to the linker and runtime loader. A client's
* root filter can use this if the goal is to augment rather than
* replace the standard logic. Function Rmtmps.isExportedRoot is an
* alternate name for this same function.
*
* Function Rmtmps.isCompleteProgramRoot is an example of an alternate
* root collection. This function assumes that it is operating on a
* complete program rather than just one object file. It treats
* "main()" as a root, as well as any function carrying the
* "constructor" or "destructor" attribute. All other globals are
* candidates for removal, regardless of their linkage.
*
* Note that certain CIL- and CCured-specific pragmas induce
* additional global roots. This functionality is always present, and
* is not subject to replacement by "filterRoots".
*)
type rootsFilter = Cil.global -> bool
val isDefaultRoot : rootsFilter
val isExportedRoot : rootsFilter
val isCompleteProgramRoot : rootsFilter
(* process a complete Cil file *)
val removeUnusedTemps: ?isRoot:rootsFilter -> Cil.file -> unit
val keepUnused: bool ref (* Set this to true to turn off this module *)
val rmUnusedInlines: bool ref (* Delete unused inline funcs in gcc mode? *)
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