#include <iostream>
using namespace llvm;
-int llvm::BasicCallGraphStub;
-
static bool isOnlyADirectCall(Function *F, CallSite CS) {
if (!CS.getInstruction()) return false;
for (CallSite::arg_iterator I = CS.arg_begin(), E = CS.arg_end(); I != E; ++I)
void addToCallGraph(Function *F) {
CallGraphNode *Node = getOrInsertFunction(F);
- // If this function has external linkage, anything could call it...
+ // If this function has external linkage, anything could call it.
if (!F->hasInternalLinkage()) {
- ExternalCallingNode->addCalledFunction(Node);
+ ExternalCallingNode->addCalledFunction(CallSite(), Node);
// Found the entry point?
if (F->getName() == "main") {
// If this function is not defined in this translation unit, it could call
// anything.
if (F->isExternal() && !F->getIntrinsicID())
- Node->addCalledFunction(CallsExternalNode);
+ Node->addCalledFunction(CallSite(), CallsExternalNode);
// Loop over all of the users of the function... looking for callers...
//
bool isUsedExternally = false;
for (Value::use_iterator I = F->use_begin(), E = F->use_end(); I != E; ++I){
if (Instruction *Inst = dyn_cast<Instruction>(*I)) {
- if (isOnlyADirectCall(F, CallSite::get(Inst)))
+ CallSite CS = CallSite::get(Inst);
+ if (isOnlyADirectCall(F, CS))
getOrInsertFunction(Inst->getParent()->getParent())
- ->addCalledFunction(Node);
+ ->addCalledFunction(CS, Node);
else
isUsedExternally = true;
} else if (GlobalValue *GV = dyn_cast<GlobalValue>(*I)) {
for (Value::use_iterator I = GV->use_begin(), E = GV->use_end();
I != E; ++I)
if (Instruction *Inst = dyn_cast<Instruction>(*I)) {
- if (isOnlyADirectCall(F, CallSite::get(Inst)))
- getOrInsertFunction(Inst->getParent()->getParent())
- ->addCalledFunction(Node);
- else
- isUsedExternally = true;
+ CallSite CS = CallSite::get(Inst);
+ if (isOnlyADirectCall(F, CS))
+ getOrInsertFunction(Inst->getParent()->getParent())
+ ->addCalledFunction(CS, Node);
+ else
+ isUsedExternally = true;
} else {
isUsedExternally = true;
}
}
}
if (isUsedExternally)
- ExternalCallingNode->addCalledFunction(Node);
+ ExternalCallingNode->addCalledFunction(CallSite(), Node);
- // Look for an indirect function call...
+ // Look for an indirect function call.
for (Function::iterator BB = F->begin(), BBE = F->end(); BB != BBE; ++BB)
for (BasicBlock::iterator II = BB->begin(), IE = BB->end();
II != IE; ++II) {
CallSite CS = CallSite::get(II);
if (CS.getInstruction() && !CS.getCalledFunction())
- Node->addCalledFunction(CallsExternalNode);
+ Node->addCalledFunction(CS, CallsExternalNode);
}
}
return CGN = new CallGraphNode(const_cast<Function*>(F));
}
-
-
-int CallGraph::stub; // to ensure linkage of this file.
-
void CallGraphNode::print(std::ostream &OS) const {
if (Function *F = getFunction())
OS << "Call graph node for function: '" << F->getName() <<"'\n";
OS << "Call graph node <<null function: 0x" << this << ">>:\n";
for (const_iterator I = begin(), E = end(); I != E; ++I)
- if ((*I)->getFunction())
- OS << " Calls function '" << (*I)->getFunction()->getName() << "'\n";
+ if (I->second->getFunction())
+ OS << " Calls function '" << I->second->getFunction()->getName() <<"'\n";
else
OS << " Calls external node\n";
OS << "\n";
void CallGraphNode::removeCallEdgeTo(CallGraphNode *Callee) {
for (unsigned i = CalledFunctions.size(); ; --i) {
assert(i && "Cannot find callee to remove!");
- if (CalledFunctions[i-1] == Callee) {
+ if (CalledFunctions[i-1].second == Callee) {
CalledFunctions.erase(CalledFunctions.begin()+i-1);
return;
}
// removeCallEdgeTo, so it should not be used unless necessary.
void CallGraphNode::removeAnyCallEdgeTo(CallGraphNode *Callee) {
for (unsigned i = 0, e = CalledFunctions.size(); i != e; ++i)
- if (CalledFunctions[i] == Callee) {
+ if (CalledFunctions[i].second == Callee) {
CalledFunctions[i] = CalledFunctions.back();
CalledFunctions.pop_back();
--i; --e;
}
}
+
+// Enuse that users of CallGraph.h also link with this file
+DEFINING_FILE_FOR(CallGraph)