//
// 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 is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
#include "llvm/Analysis/CallGraph.h"
#include "llvm/ADT/SCCIterator.h"
#include "llvm/PassManagers.h"
+#include "llvm/Function.h"
using namespace llvm;
//===----------------------------------------------------------------------===//
class CGPassManager : public ModulePass, public PMDataManager {
public:
- CGPassManager(int Depth) : PMDataManager(Depth) { }
+ static char ID;
+ explicit CGPassManager(int Depth)
+ : ModulePass((intptr_t)&ID), PMDataManager(Depth) { }
/// run - Execute all of the passes scheduled for execution. Keep track of
/// whether any of the passes modifies the module, and if so, return true.
Info.setPreservesAll();
}
+ virtual const char *getPassName() const {
+ return "CallGraph Pass Manager";
+ }
+
// Print passes managed by this manager
void dumpPassStructure(unsigned Offset) {
llvm::cerr << std::string(Offset*2, ' ') << "Call Graph SCC Pass Manager\n";
return FP;
}
- virtual PassManagerType getPassManagerType() {
+ virtual PassManagerType getPassManagerType() const {
return PMT_CallGraphPassManager;
}
};
+char CGPassManager::ID = 0;
/// run - Execute all of the passes scheduled for execution. Keep track of
/// whether any of the passes modifies the module, and if so, return true.
bool CGPassManager::runOnModule(Module &M) {
CallGraph &CG = getAnalysis<CallGraph>();
bool Changed = doInitialization(CG);
- std::string Msg1 = "Executing Pass '";
- std::string Msg3 = "' Made Modification '";
-
// Walk SCC
for (scc_iterator<CallGraph*> I = scc_begin(&CG), E = scc_end(&CG);
I != E; ++I) {
// Run all passes on current SCC
- for (unsigned Index = 0; Index < getNumContainedPasses(); ++Index) {
-
+ for (unsigned Index = 0; Index < getNumContainedPasses(); ++Index) {
Pass *P = getContainedPass(Index);
AnalysisUsage AnUsage;
P->getAnalysisUsage(AnUsage);
- std::string Msg2 = "' on Call Graph ...\n'";
- dumpPassInfo(P, Msg1, Msg2);
+ dumpPassInfo(P, EXECUTION_MSG, ON_CG_MSG, "");
dumpAnalysisSetInfo("Required", P, AnUsage.getRequiredSet());
initializeAnalysisImpl(P);
- // if (TheTimeInfo) TheTimeInfo->passStarted(P);
+ StartPassTimer(P);
if (CallGraphSCCPass *CGSP = dynamic_cast<CallGraphSCCPass *>(P))
- Changed |= CGSP->runOnSCC(*I); // TODO : What if CG is changed ?
+ Changed |= CGSP->runOnSCC(*I); // TODO : What if CG is changed ?
else {
- FPPassManager *FPP = dynamic_cast<FPPassManager *>(P);
- assert (FPP && "Invalid CGPassManager member");
-
- // Run pass P on all functions current SCC
- std::vector<CallGraphNode*> &SCC = *I;
- for (unsigned i = 0, e = SCC.size(); i != e; ++i) {
- Function *F = SCC[i]->getFunction();
- if (F)
- Changed |= FPP->runOnFunction(*F);
- }
+ FPPassManager *FPP = dynamic_cast<FPPassManager *>(P);
+ assert (FPP && "Invalid CGPassManager member");
+
+ // Run pass P on all functions current SCC
+ std::vector<CallGraphNode*> &SCC = *I;
+ for (unsigned i = 0, e = SCC.size(); i != e; ++i) {
+ Function *F = SCC[i]->getFunction();
+ if (F) {
+ dumpPassInfo(P, EXECUTION_MSG, ON_FUNCTION_MSG, F->getNameStart());
+ Changed |= FPP->runOnFunction(*F);
+ }
+ }
}
- // if (TheTimeInfo) TheTimeInfo->passEnded(MP);
+ StopPassTimer(P);
if (Changed)
- dumpPassInfo(P, Msg3, Msg2);
+ dumpPassInfo(P, MODIFICATION_MSG, ON_CG_MSG, "");
dumpAnalysisSetInfo("Preserved", P, AnUsage.getPreservedSet());
-
+
+ verifyPreservedAnalysis(P);
removeNotPreservedAnalysis(P);
recordAvailableAnalysis(P);
- removeDeadPasses(P, Msg2);
+ removeDeadPasses(P, "", ON_CG_MSG);
}
}
Changed |= doFinalization(CG);
return Changed;
}
+/// Assign pass manager to manage this pass.
+void CallGraphSCCPass::assignPassManager(PMStack &PMS,
+ PassManagerType PreferredType) {
+ // Find CGPassManager
+ while (!PMS.empty() &&
+ PMS.top()->getPassManagerType() > PMT_CallGraphPassManager)
+ PMS.pop();
+
+ CGPassManager *CGP = dynamic_cast<CGPassManager *>(PMS.top());
+
+ // Create new Call Graph SCC Pass Manager if it does not exist.
+ if (!CGP) {
+
+ assert (!PMS.empty() && "Unable to create Call Graph Pass Manager");
+ PMDataManager *PMD = PMS.top();
+
+ // [1] Create new Call Graph Pass Manager
+ CGP = new CGPassManager(PMD->getDepth() + 1);
+
+ // [2] Set up new manager's top level manager
+ PMTopLevelManager *TPM = PMD->getTopLevelManager();
+ TPM->addIndirectPassManager(CGP);
+
+ // [3] Assign manager to manage this new manager. This may create
+ // and push new managers into PMS
+ Pass *P = dynamic_cast<Pass *>(CGP);
+ TPM->schedulePass(P);
+
+ // [4] Push new manager into PMS
+ PMS.push(CGP);
+ }
+
+ CGP->add(this);
+}
+
/// getAnalysisUsage - For this class, we declare that we require and preserve
/// the call graph. If the derived class implements this method, it should
/// always explicitly call the implementation here.
AU.addRequired<CallGraph>();
AU.addPreserved<CallGraph>();
}
-
-bool CallGraphSCCPass::runOnModule(Module &M) {
- CallGraph &CG = getAnalysis<CallGraph>();
- bool Changed = doInitialization(CG);
- for (scc_iterator<CallGraph*> I = scc_begin(&CG), E = scc_end(&CG);
- I != E; ++I)
- Changed = runOnSCC(*I);
- return Changed | doFinalization(CG);
-}
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