diff options
Diffstat (limited to 'lib/Analysis/CallGraph.cpp')
-rw-r--r-- | lib/Analysis/CallGraph.cpp | 34 |
1 files changed, 5 insertions, 29 deletions
diff --git a/lib/Analysis/CallGraph.cpp b/lib/Analysis/CallGraph.cpp index 6942176ae6ae..ff5242f69a1b 100644 --- a/lib/Analysis/CallGraph.cpp +++ b/lib/Analysis/CallGraph.cpp @@ -21,23 +21,18 @@ using namespace llvm; // CallGraph::CallGraph(Module &M) - : M(M), Root(nullptr), ExternalCallingNode(getOrInsertFunction(nullptr)), + : M(M), ExternalCallingNode(getOrInsertFunction(nullptr)), CallsExternalNode(llvm::make_unique<CallGraphNode>(nullptr)) { // Add every function to the call graph. for (Function &F : M) addToCallGraph(&F); - - // If we didn't find a main function, use the external call graph node - if (!Root) - Root = ExternalCallingNode; } CallGraph::CallGraph(CallGraph &&Arg) - : M(Arg.M), FunctionMap(std::move(Arg.FunctionMap)), Root(Arg.Root), + : M(Arg.M), FunctionMap(std::move(Arg.FunctionMap)), ExternalCallingNode(Arg.ExternalCallingNode), CallsExternalNode(std::move(Arg.CallsExternalNode)) { Arg.FunctionMap.clear(); - Arg.Root = nullptr; Arg.ExternalCallingNode = nullptr; } @@ -57,21 +52,9 @@ CallGraph::~CallGraph() { void CallGraph::addToCallGraph(Function *F) { CallGraphNode *Node = getOrInsertFunction(F); - // If this function has external linkage, anything could call it. - if (!F->hasLocalLinkage()) { - ExternalCallingNode->addCalledFunction(CallSite(), Node); - - // Found the entry point? - if (F->getName() == "main") { - if (Root) // Found multiple external mains? Don't pick one. - Root = ExternalCallingNode; - else - Root = Node; // Found a main, keep track of it! - } - } - - // If this function has its address taken, anything could call it. - if (F->hasAddressTaken()) + // If this function has external linkage or has its address taken, anything + // could call it. + if (!F->hasLocalLinkage() || F->hasAddressTaken()) ExternalCallingNode->addCalledFunction(CallSite(), Node); // If this function is not defined in this translation unit, it could call @@ -96,13 +79,6 @@ void CallGraph::addToCallGraph(Function *F) { } void CallGraph::print(raw_ostream &OS) const { - OS << "CallGraph Root is: "; - if (Function *F = Root->getFunction()) - OS << F->getName() << "\n"; - else { - OS << "<<null function: 0x" << Root << ">>\n"; - } - // Print in a deterministic order by sorting CallGraphNodes by name. We do // this here to avoid slowing down the non-printing fast path. |