Module Dataflow2

module Dataflow2: sig .. end
A framework for implementing data flow analysis.
Consult the Plugin Development Guide for additional details.

type 't action = 
| Default (*The default action*)
| Done of 't (*Do not do the default action. Use this result*)
| Post of ('t -> 't) (*The default action, followed by the given transformer*)
type 't stmtaction = 
| SDefault (*The default action*)
| SDone (*Do not visit this statement or its successors*)
| SUse of 't (*Visit the instructions and successors of this statement as usual, but use the specified state instead of the one that was passed to doStmt*)
type 't guardaction = 
| GDefault (*The default state*)
| GUse of 't (*Use this data for the branch*)
| GUnreachable (*The branch will never be taken.*)
For if statements
module type StmtStartData = sig .. end
module StartData: 
functor (X : sig
type t 
val size : int
end) -> StmtStartData with type data = X.t
This module can be used to instantiate the StmtStartData components of the functors below.

Forwards Dataflow Analysis


module type ForwardsTransfer = sig .. end
Interface to provide for a backward dataflow analysis.
module Forwards: 
functor (T : ForwardsTransfer) -> sig .. end

Backwards Dataflow Analysis


module type BackwardsTransfer = sig .. end
Interface to provide for a backward dataflow analysis.
module Backwards: 
functor (T : BackwardsTransfer) -> sig .. end
val find_stmts : Cil_types.fundec -> Cil_types.stmt list * Cil_types.stmt list
Returns (all_stmts, sink_stmts), where all_stmts is a list of the statements in a function, and sink_stmts is a list of the return statments (including statements that fall through the end of a void function). Useful when you need an initial set of statements for BackwardsDataFlow.compute.