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diff --git a/lib/Analysis/DataStructure/DSCallSiteIterator.h b/lib/Analysis/DataStructure/DSCallSiteIterator.h
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-//===- 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