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Diffstat (limited to 'include/llvm/CallGraphSCCPass.h')
-rw-r--r-- | include/llvm/CallGraphSCCPass.h | 104 |
1 files changed, 0 insertions, 104 deletions
diff --git a/include/llvm/CallGraphSCCPass.h b/include/llvm/CallGraphSCCPass.h deleted file mode 100644 index 7154aa3..0000000 --- a/include/llvm/CallGraphSCCPass.h +++ /dev/null @@ -1,104 +0,0 @@ -//===- CallGraphSCCPass.h - Pass that operates BU on call graph -*- C++ -*-===// -// -// The LLVM Compiler Infrastructure -// -// This file is distributed under the University of Illinois Open Source -// License. See LICENSE.TXT for details. -// -//===----------------------------------------------------------------------===// -// -// This file defines the CallGraphSCCPass class, which is used for passes which -// are implemented as bottom-up traversals on the call graph. Because there may -// be cycles in the call graph, passes of this type operate on the call-graph in -// SCC order: that is, they process function bottom-up, except for recursive -// functions, which they process all at once. -// -// These passes are inherently interprocedural, and are required to keep the -// call graph up-to-date if they do anything which could modify it. -// -//===----------------------------------------------------------------------===// - -#ifndef LLVM_CALL_GRAPH_SCC_PASS_H -#define LLVM_CALL_GRAPH_SCC_PASS_H - -#include "llvm/Pass.h" -#include "llvm/Analysis/CallGraph.h" - -namespace llvm { - -class CallGraphNode; -class CallGraph; -class PMStack; -class CallGraphSCC; - -class CallGraphSCCPass : public Pass { -public: - explicit CallGraphSCCPass(char &pid) : Pass(PT_CallGraphSCC, pid) {} - - /// createPrinterPass - Get a pass that prints the Module - /// corresponding to a CallGraph. - Pass *createPrinterPass(raw_ostream &O, const std::string &Banner) const; - - /// doInitialization - This method is called before the SCC's of the program - /// has been processed, allowing the pass to do initialization as necessary. - virtual bool doInitialization(CallGraph &CG) { - return false; - } - - /// runOnSCC - This method should be implemented by the subclass to perform - /// whatever action is necessary for the specified SCC. Note that - /// non-recursive (or only self-recursive) functions will have an SCC size of - /// 1, where recursive portions of the call graph will have SCC size > 1. - /// - /// SCC passes that add or delete functions to the SCC are required to update - /// the SCC list, otherwise stale pointers may be dereferenced. - /// - virtual bool runOnSCC(CallGraphSCC &SCC) = 0; - - /// doFinalization - This method is called after the SCC's of the program has - /// been processed, allowing the pass to do final cleanup as necessary. - virtual bool doFinalization(CallGraph &CG) { - return false; - } - - /// Assign pass manager to manager this pass - virtual void assignPassManager(PMStack &PMS, - PassManagerType PMT); - - /// Return what kind of Pass Manager can manage this pass. - virtual PassManagerType getPotentialPassManagerType() const { - return PMT_CallGraphPassManager; - } - - /// getAnalysisUsage - For this class, we declare that we require and preserve - /// the call graph. If the derived class implements this method, it should - /// always explicitly call the implementation here. - virtual void getAnalysisUsage(AnalysisUsage &Info) const; -}; - -/// CallGraphSCC - This is a single SCC that a CallGraphSCCPass is run on. -class CallGraphSCC { - void *Context; // The CGPassManager object that is vending this. - std::vector<CallGraphNode*> Nodes; -public: - CallGraphSCC(void *context) : Context(context) {} - - void initialize(CallGraphNode*const*I, CallGraphNode*const*E) { - Nodes.assign(I, E); - } - - bool isSingular() const { return Nodes.size() == 1; } - unsigned size() const { return Nodes.size(); } - - /// ReplaceNode - This informs the SCC and the pass manager that the specified - /// Old node has been deleted, and New is to be used in its place. - void ReplaceNode(CallGraphNode *Old, CallGraphNode *New); - - typedef std::vector<CallGraphNode*>::const_iterator iterator; - iterator begin() const { return Nodes.begin(); } - iterator end() const { return Nodes.end(); } -}; - -} // End llvm namespace - -#endif |