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Diffstat (limited to 'lib/Analysis/DataStructure/DSCallSiteIterator.h')
-rw-r--r-- | lib/Analysis/DataStructure/DSCallSiteIterator.h | 136 |
1 files changed, 0 insertions, 136 deletions
diff --git a/lib/Analysis/DataStructure/DSCallSiteIterator.h b/lib/Analysis/DataStructure/DSCallSiteIterator.h deleted file mode 100644 index bc51fcf..0000000 --- a/lib/Analysis/DataStructure/DSCallSiteIterator.h +++ /dev/null @@ -1,136 +0,0 @@ -//===- DSCallSiteIterator.h - Iterator for DSGraph call sites ---*- C++ -*-===// -// -// The LLVM Compiler Infrastructure -// -// This file was developed by the LLVM research group and is distributed under -// the University of Illinois Open Source License. See LICENSE.TXT for details. -// -//===----------------------------------------------------------------------===// -// -// This file implements an iterator for complete call sites in DSGraphs. This -// code can either iterator over the normal call list or the aux calls list, and -// is used by the TD and BU passes. -// -//===----------------------------------------------------------------------===// - -#ifndef DSCALLSITEITERATOR_H -#define DSCALLSITEITERATOR_H - -#include "llvm/Analysis/DataStructure/DSGraph.h" -#include "llvm/Function.h" - -namespace llvm { - -struct DSCallSiteIterator { - // FCs are the edges out of the current node are the call site targets... - std::list<DSCallSite> *FCs; - std::list<DSCallSite>::iterator CallSite; - unsigned CallSiteEntry; - - DSCallSiteIterator(std::list<DSCallSite> &CS) : FCs(&CS) { - CallSite = CS.begin(); CallSiteEntry = 0; - advanceToValidCallee(); - } - - // End iterator ctor. - DSCallSiteIterator(std::list<DSCallSite> &CS, bool) : FCs(&CS) { - CallSite = CS.end(); CallSiteEntry = 0; - } - - static bool isVAHackFn(const Function *F) { - return F->getName() == "printf" || F->getName() == "sscanf" || - F->getName() == "fprintf" || F->getName() == "open" || - F->getName() == "sprintf" || F->getName() == "fputs" || - F->getName() == "fscanf"; - } - - // isUnresolvableFunction - Return true if this is an unresolvable - // external function. A direct or indirect call to this cannot be resolved. - // - static bool isUnresolvableFunc(const Function* callee) { - return callee->isExternal() && !isVAHackFn(callee); - } - - void advanceToValidCallee() { - while (CallSite != FCs->end()) { - if (CallSite->isDirectCall()) { - if (CallSiteEntry == 0 && // direct call only has one target... - ! isUnresolvableFunc(CallSite->getCalleeFunc())) - return; // and not an unresolvable external func - } else { - DSNode *CalleeNode = CallSite->getCalleeNode(); - if (CallSiteEntry || isCompleteNode(CalleeNode)) { - const std::vector<GlobalValue*> &Callees = CalleeNode->getGlobals(); - while (CallSiteEntry < Callees.size()) { - if (isa<Function>(Callees[CallSiteEntry])) - return; - ++CallSiteEntry; - } - } - } - CallSiteEntry = 0; - ++CallSite; - } - } - - // isCompleteNode - Return true if we know all of the targets of this node, - // and if the call sites are not external. - // - static inline bool isCompleteNode(DSNode *N) { - if (N->isIncomplete()) return false; - const std::vector<GlobalValue*> &Callees = N->getGlobals(); - for (unsigned i = 0, e = Callees.size(); i != e; ++i) - if (isUnresolvableFunc(cast<Function>(Callees[i]))) - return false; // Unresolvable external function found... - return true; // otherwise ok - } - -public: - static DSCallSiteIterator begin_aux(DSGraph &G) { - return G.getAuxFunctionCalls(); - } - static DSCallSiteIterator end_aux(DSGraph &G) { - return DSCallSiteIterator(G.getAuxFunctionCalls(), true); - } - static DSCallSiteIterator begin_std(DSGraph &G) { - return G.getFunctionCalls(); - } - static DSCallSiteIterator end_std(DSGraph &G) { - return DSCallSiteIterator(G.getFunctionCalls(), true); - } - static DSCallSiteIterator begin(std::list<DSCallSite> &CSs) { return CSs; } - static DSCallSiteIterator end(std::list<DSCallSite> &CSs) { - return DSCallSiteIterator(CSs, true); - } - bool operator==(const DSCallSiteIterator &CSI) const { - return CallSite == CSI.CallSite && CallSiteEntry == CSI.CallSiteEntry; - } - bool operator!=(const DSCallSiteIterator &CSI) const { - return !operator==(CSI); - } - - std::list<DSCallSite>::iterator getCallSiteIdx() const { return CallSite; } - const DSCallSite &getCallSite() const { return *CallSite; } - - Function *operator*() const { - if (CallSite->isDirectCall()) { - return CallSite->getCalleeFunc(); - } else { - DSNode *Node = CallSite->getCalleeNode(); - return cast<Function>(Node->getGlobals()[CallSiteEntry]); - } - } - - DSCallSiteIterator& operator++() { // Preincrement - ++CallSiteEntry; - advanceToValidCallee(); - return *this; - } - DSCallSiteIterator operator++(int) { // Postincrement - DSCallSiteIterator tmp = *this; ++*this; return tmp; - } -}; - -} // End llvm namespace - -#endif |