//===----------------------------------------------------------------------===//
#include "llvm/Analysis/CallGraph.h"
+#include "llvm/IR/CallSite.h"
#include "llvm/IR/Instructions.h"
#include "llvm/IR/IntrinsicInst.h"
#include "llvm/IR/Module.h"
-#include "llvm/Support/CallSite.h"
#include "llvm/Support/Debug.h"
#include "llvm/Support/raw_ostream.h"
using namespace llvm;
-CallGraph::CallGraph()
- : ModulePass(ID), Root(0), ExternalCallingNode(0), CallsExternalNode(0) {
- initializeCallGraphPass(*PassRegistry::getPassRegistry());
+//===----------------------------------------------------------------------===//
+// Implementations of the CallGraph class methods.
+//
+
+CallGraph::CallGraph(Module &M)
+ : M(M), Root(nullptr), ExternalCallingNode(getOrInsertFunction(nullptr)),
+ CallsExternalNode(new CallGraphNode(nullptr)) {
+ // Add every function to the call graph.
+ for (Module::iterator I = M.begin(), E = M.end(); I != E; ++I)
+ addToCallGraph(I);
+
+ // If we didn't find a main function, use the external call graph node
+ if (!Root)
+ Root = ExternalCallingNode;
+}
+
+CallGraph::~CallGraph() {
+ // CallsExternalNode is not in the function map, delete it explicitly.
+ CallsExternalNode->allReferencesDropped();
+ delete CallsExternalNode;
+
+// Reset all node's use counts to zero before deleting them to prevent an
+// assertion from firing.
+#ifndef NDEBUG
+ for (FunctionMapTy::iterator I = FunctionMap.begin(), E = FunctionMap.end();
+ I != E; ++I)
+ I->second->allReferencesDropped();
+#endif
+ for (FunctionMapTy::iterator I = FunctionMap.begin(), E = FunctionMap.end();
+ I != E; ++I)
+ delete I->second;
}
void CallGraph::addToCallGraph(Function *F) {
}
}
-void CallGraph::getAnalysisUsage(AnalysisUsage &AU) const {
- AU.setPreservesAll();
-}
-
-bool CallGraph::runOnModule(Module &M) {
- this->M = &M;
-
- ExternalCallingNode = getOrInsertFunction(0);
- assert(!CallsExternalNode);
- CallsExternalNode = new CallGraphNode(0);
- Root = 0;
-
- // Add every function to the call graph.
- for (Module::iterator I = M.begin(), E = M.end(); I != E; ++I)
- addToCallGraph(I);
-
- // If we didn't find a main function, use the external call graph node
- if (Root == 0)
- Root = ExternalCallingNode;
-
- return false;
-}
-
-INITIALIZE_PASS(CallGraph, "basiccg", "CallGraph Construction", false, true)
-
-char CallGraph::ID = 0;
-
-void CallGraph::releaseMemory() {
- /// CallsExternalNode is not in the function map, delete it explicitly.
- if (CallsExternalNode) {
- CallsExternalNode->allReferencesDropped();
- delete CallsExternalNode;
- CallsExternalNode = 0;
- }
-
- if (FunctionMap.empty())
- return;
-
-// Reset all node's use counts to zero before deleting them to prevent an
-// assertion from firing.
-#ifndef NDEBUG
- for (FunctionMapTy::iterator I = FunctionMap.begin(), E = FunctionMap.end();
- I != E; ++I)
- I->second->allReferencesDropped();
-#endif
-
- for (FunctionMapTy::iterator I = FunctionMap.begin(), E = FunctionMap.end();
- I != E; ++I)
- delete I->second;
- FunctionMap.clear();
-}
-
-void CallGraph::print(raw_ostream &OS, const Module*) const {
+void CallGraph::print(raw_ostream &OS) const {
OS << "CallGraph Root is: ";
if (Function *F = Root->getFunction())
OS << F->getName() << "\n";
for (CallGraph::const_iterator I = begin(), E = end(); I != E; ++I)
I->second->print(OS);
}
+
#if !defined(NDEBUG) || defined(LLVM_ENABLE_DUMP)
-void CallGraph::dump() const {
- print(dbgs(), 0);
-}
+void CallGraph::dump() const { print(dbgs()); }
#endif
-//===----------------------------------------------------------------------===//
-// Implementations of public modification methods
-//
-
// removeFunctionFromModule - Unlink the function from this module, returning
// it. Because this removes the function from the module, the call graph node
// is destroyed. This is only valid if the function does not call any other
delete CGN; // Delete the call graph node for this func
FunctionMap.erase(F); // Remove the call graph node from the map
- M->getFunctionList().remove(F);
+ M.getFunctionList().remove(F);
return F;
}
// not already exist.
CallGraphNode *CallGraph::getOrInsertFunction(const Function *F) {
CallGraphNode *&CGN = FunctionMap[F];
- if (CGN) return CGN;
-
- assert((!F || F->getParent() == M) && "Function not in current module!");
+ if (CGN)
+ return CGN;
+
+ assert((!F || F->getParent() == &M) && "Function not in current module!");
return CGN = new CallGraphNode(const_cast<Function*>(F));
}
+//===----------------------------------------------------------------------===//
+// Implementations of the CallGraphNode class methods.
+//
+
void CallGraphNode::print(raw_ostream &OS) const {
if (Function *F = getFunction())
OS << "Call graph node for function: '" << F->getName() << "'";
for (CalledFunctionsVector::iterator I = CalledFunctions.begin(); ; ++I) {
assert(I != CalledFunctions.end() && "Cannot find callee to remove!");
CallRecord &CR = *I;
- if (CR.second == Callee && CR.first == 0) {
+ if (CR.second == Callee && CR.first == nullptr) {
Callee->DropRef();
*I = CalledFunctions.back();
CalledFunctions.pop_back();
}
}
-// Enuse that users of CallGraph.h also link with this file
-DEFINING_FILE_FOR(CallGraph)
+//===----------------------------------------------------------------------===//
+// Out-of-line definitions of CallGraphAnalysis class members.
+//
+
+char CallGraphAnalysis::PassID;
+
+//===----------------------------------------------------------------------===//
+// Implementations of the CallGraphWrapperPass class methods.
+//
+
+CallGraphWrapperPass::CallGraphWrapperPass() : ModulePass(ID) {
+ initializeCallGraphWrapperPassPass(*PassRegistry::getPassRegistry());
+}
+
+CallGraphWrapperPass::~CallGraphWrapperPass() {}
+
+void CallGraphWrapperPass::getAnalysisUsage(AnalysisUsage &AU) const {
+ AU.setPreservesAll();
+}
+
+bool CallGraphWrapperPass::runOnModule(Module &M) {
+ // All the real work is done in the constructor for the CallGraph.
+ G.reset(new CallGraph(M));
+ return false;
+}
+
+INITIALIZE_PASS(CallGraphWrapperPass, "basiccg", "CallGraph Construction",
+ false, true)
+
+char CallGraphWrapperPass::ID = 0;
+
+void CallGraphWrapperPass::releaseMemory() { G.reset(); }
+
+void CallGraphWrapperPass::print(raw_ostream &OS, const Module *) const {
+ if (!G) {
+ OS << "No call graph has been built!\n";
+ return;
+ }
+
+ // Just delegate.
+ G->print(OS);
+}
+
+#if !defined(NDEBUG) || defined(LLVM_ENABLE_DUMP)
+void CallGraphWrapperPass::dump() const { print(dbgs(), nullptr); }
+#endif
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