1 //===- PassManager.cpp - LLVM Pass Infrastructure Implementation ----------===//
3 // The LLVM Compiler Infrastructure
5 // This file was developed by Devang Patel and is distributed under
6 // the University of Illinois Open Source License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
10 // This file implements the LLVM Pass Manager infrastructure.
12 //===----------------------------------------------------------------------===//
15 #include "llvm/PassManager.h"
16 #include "llvm/Module.h"
17 #include "llvm/ModuleProvider.h"
18 #include "llvm/Support/Streams.h"
23 //===----------------------------------------------------------------------===//
25 // The Pass Manager Infrastructure manages passes. It's responsibilities are:
27 // o Manage optimization pass execution order
28 // o Make required Analysis information available before pass P is run
29 // o Release memory occupied by dead passes
30 // o If Analysis information is dirtied by a pass then regenerate Analysis
31 // information before it is consumed by another pass.
33 // Pass Manager Infrastructure uses multipe pass managers. They are PassManager,
34 // FunctionPassManager, ModulePassManager, BasicBlockPassManager. This class
35 // hierarcy uses multiple inheritance but pass managers do not derive from
36 // another pass manager.
38 // PassManager and FunctionPassManager are two top level pass manager that
39 // represents the external interface of this entire pass manager infrastucture.
41 // Important classes :
43 // [o] class PMTopLevelManager;
45 // Two top level managers, PassManager and FunctionPassManager, derive from
46 // PMTopLevelManager. PMTopLevelManager manages information used by top level
47 // managers such as last user info.
49 // [o] class PMDataManager;
51 // PMDataManager manages information, e.g. list of available analysis info,
52 // used by a pass manager to manage execution order of passes. It also provides
53 // a place to implement common pass manager APIs. All pass managers derive from
56 // [o] class BasicBlockPassManager : public FunctionPass, public PMDataManager;
58 // BasicBlockPassManager manages BasicBlockPasses.
60 // [o] class FunctionPassManager;
62 // This is a external interface used by JIT to manage FunctionPasses. This
63 // interface relies on FunctionPassManagerImpl to do all the tasks.
65 // [o] class FunctionPassManagerImpl : public ModulePass, PMDataManager,
66 // public PMTopLevelManager;
68 // FunctionPassManagerImpl is a top level manager. It manages FunctionPasses
69 // and BasicBlockPassManagers.
71 // [o] class ModulePassManager : public Pass, public PMDataManager;
73 // ModulePassManager manages ModulePasses and FunctionPassManagerImpls.
75 // [o] class PassManager;
77 // This is a external interface used by various tools to manages passes. It
78 // relies on PassManagerImpl to do all the tasks.
80 // [o] class PassManagerImpl : public Pass, public PMDataManager,
81 // public PMDTopLevelManager
83 // PassManagerImpl is a top level pass manager responsible for managing
84 // ModulePassManagers.
85 //===----------------------------------------------------------------------===//
89 //===----------------------------------------------------------------------===//
92 /// PMTopLevelManager manages LastUser info and collects common APIs used by
93 /// top level pass managers.
94 class PMTopLevelManager {
98 inline std::vector<Pass *>::iterator passManagersBegin() {
99 return PassManagers.begin();
102 inline std::vector<Pass *>::iterator passManagersEnd() {
103 return PassManagers.end();
106 /// Schedule pass P for execution. Make sure that passes required by
107 /// P are run before P is run. Update analysis info maintained by
108 /// the manager. Remove dead passes. This is a recursive function.
109 void schedulePass(Pass *P, Pass *PM);
111 /// This is implemented by top level pass manager and used by
112 /// schedulePass() to add analysis info passes that are not available.
113 virtual void addTopLevelPass(Pass *P) = 0;
115 /// Set pass P as the last user of the given analysis passes.
116 void setLastUser(std::vector<Pass *> &AnalysisPasses, Pass *P);
118 /// Collect passes whose last user is P
119 void collectLastUses(std::vector<Pass *> &LastUses, Pass *P);
121 virtual ~PMTopLevelManager() {
122 PassManagers.clear();
125 /// Add immutable pass and initialize it.
126 inline void addImmutablePass(ImmutablePass *P) {
128 ImmutablePasses.push_back(P);
131 inline std::vector<ImmutablePass *>& getImmutablePasses() {
132 return ImmutablePasses;
137 /// Collection of pass managers
138 std::vector<Pass *> PassManagers;
140 // Map to keep track of last user of the analysis pass.
141 // LastUser->second is the last user of Lastuser->first.
142 std::map<Pass *, Pass *> LastUser;
144 /// Immutable passes are managed by top level manager.
145 std::vector<ImmutablePass *> ImmutablePasses;
148 /// Set pass P as the last user of the given analysis passes.
149 void PMTopLevelManager::setLastUser(std::vector<Pass *> &AnalysisPasses,
152 for (std::vector<Pass *>::iterator I = AnalysisPasses.begin(),
153 E = AnalysisPasses.end(); I != E; ++I) {
156 // If AP is the last user of other passes then make P last user of
158 for (std::map<Pass *, Pass *>::iterator LUI = LastUser.begin(),
159 LUE = LastUser.end(); LUI != LUE; ++LUI) {
160 if (LUI->second == AP)
161 LastUser[LUI->first] = P;
167 /// Collect passes whose last user is P
168 void PMTopLevelManager::collectLastUses(std::vector<Pass *> &LastUses,
170 for (std::map<Pass *, Pass *>::iterator LUI = LastUser.begin(),
171 LUE = LastUser.end(); LUI != LUE; ++LUI)
172 if (LUI->second == P)
173 LastUses.push_back(LUI->first);
176 /// Schedule pass P for execution. Make sure that passes required by
177 /// P are run before P is run. Update analysis info maintained by
178 /// the manager. Remove dead passes. This is a recursive function.
179 void PMTopLevelManager::schedulePass(Pass *P, Pass *PM) {
181 // TODO : Allocate function manager for this pass, other wise required set
182 // may be inserted into previous function manager
184 AnalysisUsage AnUsage;
185 P->getAnalysisUsage(AnUsage);
186 const std::vector<AnalysisID> &RequiredSet = AnUsage.getRequiredSet();
187 for (std::vector<AnalysisID>::const_iterator I = RequiredSet.begin(),
188 E = RequiredSet.end(); I != E; ++I) {
190 Pass *AnalysisPass = NULL; // FIXME PM->getAnalysisPass(*I, true);
192 // Schedule this analysis run first.
193 AnalysisPass = (*I)->createPass();
194 schedulePass(AnalysisPass, PM);
198 // Now all required passes are available.
203 //===----------------------------------------------------------------------===//
206 /// PMDataManager provides the common place to manage the analysis data
207 /// used by pass managers.
208 class PMDataManager {
212 PMDataManager(int D) : TPM(NULL), Depth(D) {
213 initializeAnalysisInfo();
216 /// Return true IFF pass P's required analysis set does not required new
218 bool manageablePass(Pass *P);
220 Pass *getAnalysisPass(AnalysisID AID) const {
222 std::map<AnalysisID, Pass*>::const_iterator I =
223 AvailableAnalysis.find(AID);
225 if (I != AvailableAnalysis.end())
231 /// Augment AvailableAnalysis by adding analysis made available by pass P.
232 void recordAvailableAnalysis(Pass *P);
234 /// Remove Analysis that is not preserved by the pass
235 void removeNotPreservedAnalysis(Pass *P);
237 /// Remove dead passes
238 void removeDeadPasses(Pass *P);
240 /// Add pass P into the PassVector. Update
241 /// AvailableAnalysis appropriately if ProcessAnalysis is true.
242 void addPassToManager (Pass *P, bool ProcessAnalysis = true);
244 /// Initialize available analysis information.
245 void initializeAnalysisInfo() {
246 ForcedLastUses.clear();
247 AvailableAnalysis.clear();
249 // Include immutable passes into AvailableAnalysis vector.
250 std::vector<ImmutablePass *> &ImmutablePasses = TPM->getImmutablePasses();
251 for (std::vector<ImmutablePass *>::iterator I = ImmutablePasses.begin(),
252 E = ImmutablePasses.end(); I != E; ++I)
253 recordAvailableAnalysis(*I);
256 /// Populate RequiredPasses with the analysis pass that are required by
258 void collectRequiredAnalysisPasses(std::vector<Pass *> &RequiredPasses,
261 /// All Required analyses should be available to the pass as it runs! Here
262 /// we fill in the AnalysisImpls member of the pass so that it can
263 /// successfully use the getAnalysis() method to retrieve the
264 /// implementations it needs.
265 void initializeAnalysisImpl(Pass *P);
267 inline std::vector<Pass *>::iterator passVectorBegin() {
268 return PassVector.begin();
271 inline std::vector<Pass *>::iterator passVectorEnd() {
272 return PassVector.end();
275 // Access toplevel manager
276 PMTopLevelManager *getTopLevelManager() { return TPM; }
277 void setTopLevelManager(PMTopLevelManager *T) { TPM = T; }
279 unsigned getDepth() { return Depth; }
283 // Collection of pass whose last user asked this manager to claim
284 // last use. If a FunctionPass F is the last user of ModulePass info M
285 // then the F's manager, not F, records itself as a last user of M.
286 std::vector<Pass *> ForcedLastUses;
288 // Top level manager.
289 // TODO : Make it a reference.
290 PMTopLevelManager *TPM;
293 // Set of available Analysis. This information is used while scheduling
294 // pass. If a pass requires an analysis which is not not available then
295 // equired analysis pass is scheduled to run before the pass itself is
297 std::map<AnalysisID, Pass*> AvailableAnalysis;
299 // Collection of pass that are managed by this manager
300 std::vector<Pass *> PassVector;
305 /// BasicBlockPassManager_New manages BasicBlockPass. It batches all the
306 /// pass together and sequence them to process one basic block before
307 /// processing next basic block.
308 class BasicBlockPassManager_New : public PMDataManager,
309 public FunctionPass {
312 BasicBlockPassManager_New(int D) : PMDataManager(D) { }
314 /// Add a pass into a passmanager queue.
315 bool addPass(Pass *p);
317 /// Execute all of the passes scheduled for execution. Keep track of
318 /// whether any of the passes modifies the function, and if so, return true.
319 bool runOnFunction(Function &F);
321 /// Return true IFF AnalysisID AID is currently available.
322 /// TODO : Replace this method with getAnalysisPass()
323 Pass *getAnalysisPassFromManager(AnalysisID AID);
325 /// Pass Manager itself does not invalidate any analysis info.
326 void getAnalysisUsage(AnalysisUsage &Info) const {
327 Info.setPreservesAll();
333 /// FunctionPassManagerImpl_New manages FunctionPasses and BasicBlockPassManagers.
334 /// It batches all function passes and basic block pass managers together and
335 /// sequence them to process one function at a time before processing next
337 class FunctionPassManagerImpl_New : public ModulePass,
338 public PMDataManager,
339 public PMTopLevelManager {
341 FunctionPassManagerImpl_New(ModuleProvider *P, int D) :
342 PMDataManager(D) { /* TODO */ }
343 FunctionPassManagerImpl_New(int D) : PMDataManager(D) {
344 activeBBPassManager = NULL;
346 ~FunctionPassManagerImpl_New() { /* TODO */ };
348 inline void addTopLevelPass(Pass *P) {
352 /// add - Add a pass to the queue of passes to run. This passes
353 /// ownership of the Pass to the PassManager. When the
354 /// PassManager_X is destroyed, the pass will be destroyed as well, so
355 /// there is no need to delete the pass. (TODO delete passes.)
356 /// This implies that all passes MUST be allocated with 'new'.
358 schedulePass(P, this);
361 /// Add pass into the pass manager queue.
362 bool addPass(Pass *P);
364 /// Execute all of the passes scheduled for execution. Keep
365 /// track of whether any of the passes modifies the function, and if
367 bool runOnModule(Module &M);
368 bool runOnFunction(Function &F);
370 /// Return true IFF AnalysisID AID is currently available.
371 /// TODO : Replace this method with getAnalysisPass()
372 Pass *getAnalysisPassFromManager(AnalysisID AID);
374 /// doInitialization - Run all of the initializers for the function passes.
376 bool doInitialization(Module &M);
378 /// doFinalization - Run all of the initializers for the function passes.
380 bool doFinalization(Module &M);
382 /// Pass Manager itself does not invalidate any analysis info.
383 void getAnalysisUsage(AnalysisUsage &Info) const {
384 Info.setPreservesAll();
388 // Active Pass Managers
389 BasicBlockPassManager_New *activeBBPassManager;
392 /// ModulePassManager_New manages ModulePasses and function pass managers.
393 /// It batches all Module passes passes and function pass managers together and
394 /// sequence them to process one module.
395 class ModulePassManager_New : public Pass,
396 public PMDataManager {
399 ModulePassManager_New(int D) : PMDataManager(D) {
400 activeFunctionPassManager = NULL;
403 /// Add a pass into a passmanager queue.
404 bool addPass(Pass *p);
406 /// run - Execute all of the passes scheduled for execution. Keep track of
407 /// whether any of the passes modifies the module, and if so, return true.
408 bool runOnModule(Module &M);
410 /// Return true IFF AnalysisID AID is currently available.
411 /// TODO : Replace this method with getAnalysisPass()
412 Pass *getAnalysisPassFromManager(AnalysisID AID);
414 /// Pass Manager itself does not invalidate any analysis info.
415 void getAnalysisUsage(AnalysisUsage &Info) const {
416 Info.setPreservesAll();
420 // Active Pass Manager
421 FunctionPassManagerImpl_New *activeFunctionPassManager;
424 /// PassManager_New manages ModulePassManagers
425 class PassManagerImpl_New : public Pass,
426 public PMDataManager,
427 public PMTopLevelManager {
431 PassManagerImpl_New(int D) : PMDataManager(D) {}
433 /// add - Add a pass to the queue of passes to run. This passes ownership of
434 /// the Pass to the PassManager. When the PassManager is destroyed, the pass
435 /// will be destroyed as well, so there is no need to delete the pass. This
436 /// implies that all passes MUST be allocated with 'new'.
438 schedulePass(P, this);
441 /// run - Execute all of the passes scheduled for execution. Keep track of
442 /// whether any of the passes modifies the module, and if so, return true.
445 /// Return true IFF AnalysisID AID is currently available.
446 /// TODO : Replace this method with getAnalysisPass()
447 Pass *getAnalysisPassFromManager(AnalysisID AID);
449 /// Pass Manager itself does not invalidate any analysis info.
450 void getAnalysisUsage(AnalysisUsage &Info) const {
451 Info.setPreservesAll();
454 inline void addTopLevelPass(Pass *P) {
460 /// Add a pass into a passmanager queue.
461 bool addPass(Pass *p);
463 // Collection of pass managers
464 std::vector<ModulePassManager_New *> PassManagers;
466 // Active Pass Manager
467 ModulePassManager_New *activeManager;
470 } // End of llvm namespace
472 //===----------------------------------------------------------------------===//
473 // PMDataManager implementation
475 /// Return true IFF pass P's required analysis set does not required new
477 bool PMDataManager::manageablePass(Pass *P) {
480 // If this pass is not preserving information that is required by a
481 // pass maintained by higher level pass manager then do not insert
482 // this pass into current manager. Use new manager. For example,
483 // For example, If FunctionPass F is not preserving ModulePass Info M1
484 // that is used by another ModulePass M2 then do not insert F in
485 // current function pass manager.
489 /// Augement AvailableAnalysis by adding analysis made available by pass P.
490 void PMDataManager::recordAvailableAnalysis(Pass *P) {
492 if (const PassInfo *PI = P->getPassInfo()) {
493 AvailableAnalysis[PI] = P;
495 //This pass is the current implementation of all of the interfaces it
496 //implements as well.
497 const std::vector<const PassInfo*> &II = PI->getInterfacesImplemented();
498 for (unsigned i = 0, e = II.size(); i != e; ++i)
499 AvailableAnalysis[II[i]] = P;
503 /// Remove Analyss not preserved by Pass P
504 void PMDataManager::removeNotPreservedAnalysis(Pass *P) {
505 AnalysisUsage AnUsage;
506 P->getAnalysisUsage(AnUsage);
508 if (AnUsage.getPreservesAll())
511 const std::vector<AnalysisID> &PreservedSet = AnUsage.getPreservedSet();
512 for (std::map<AnalysisID, Pass*>::iterator I = AvailableAnalysis.begin(),
513 E = AvailableAnalysis.end(); I != E; ++I ) {
514 if (std::find(PreservedSet.begin(), PreservedSet.end(), I->first) ==
515 PreservedSet.end()) {
516 // Remove this analysis
517 std::map<AnalysisID, Pass*>::iterator J = I++;
518 AvailableAnalysis.erase(J);
523 /// Remove analysis passes that are not used any longer
524 void PMDataManager::removeDeadPasses(Pass *P) {
526 std::vector<Pass *> DeadPasses;
527 TPM->collectLastUses(DeadPasses, P);
529 for (std::vector<Pass *>::iterator I = DeadPasses.begin(),
530 E = DeadPasses.end(); I != E; ++I) {
531 (*I)->releaseMemory();
533 std::map<AnalysisID, Pass*>::iterator Pos =
534 AvailableAnalysis.find((*I)->getPassInfo());
536 // It is possible that deadPass is already removed from the AvailableAnalysis
537 if (Pos != AvailableAnalysis.end())
538 AvailableAnalysis.erase(Pos);
542 /// Add pass P into the PassVector. Update
543 /// AvailableAnalysis appropriately if ProcessAnalysis is true.
544 void PMDataManager::addPassToManager(Pass *P,
545 bool ProcessAnalysis) {
547 if (ProcessAnalysis) {
549 // At the moment, this pass is the last user of all required passes.
550 std::vector<Pass *> LastUses;
551 std::vector<Pass *> RequiredPasses;
552 unsigned PDepth = this->getDepth();
554 collectRequiredAnalysisPasses(RequiredPasses, P);
555 for (std::vector<Pass *>::iterator I = RequiredPasses.begin(),
556 E = RequiredPasses.end(); I != E; ++I) {
557 Pass *PRequired = *I;
559 //FIXME: RDepth = PRequired->getResolver()->getDepth();
560 if (PDepth == RDepth)
561 LastUses.push_back(PRequired);
562 else if (PDepth > RDepth) {
563 // Let the parent claim responsibility of last use
564 ForcedLastUses.push_back(PRequired);
566 // Note : This feature is not yet implemented
568 "Unable to handle Pass that requires lower level Analysis pass");
572 if (!LastUses.empty())
573 TPM->setLastUser(LastUses, P);
575 // Take a note of analysis required and made available by this pass.
576 // Remove the analysis not preserved by this pass
577 initializeAnalysisImpl(P);
578 removeNotPreservedAnalysis(P);
579 recordAvailableAnalysis(P);
583 PassVector.push_back(P);
586 /// Populate RequiredPasses with the analysis pass that are required by
588 void PMDataManager::collectRequiredAnalysisPasses(std::vector<Pass *> &RP,
590 AnalysisUsage AnUsage;
591 P->getAnalysisUsage(AnUsage);
592 const std::vector<AnalysisID> &RequiredSet = AnUsage.getRequiredSet();
593 for (std::vector<AnalysisID>::const_iterator
594 I = RequiredSet.begin(), E = RequiredSet.end();
596 Pass *AnalysisPass = NULL; //FIXME findAnalysisPass(*I,true);
597 assert (AnalysisPass && "Analysis pass is not available");
598 RP.push_back(AnalysisPass);
602 // All Required analyses should be available to the pass as it runs! Here
603 // we fill in the AnalysisImpls member of the pass so that it can
604 // successfully use the getAnalysis() method to retrieve the
605 // implementations it needs.
607 void PMDataManager::initializeAnalysisImpl(Pass *P) {
608 AnalysisUsage AnUsage;
609 P->getAnalysisUsage(AnUsage);
611 for (std::vector<const PassInfo *>::const_iterator
612 I = AnUsage.getRequiredSet().begin(),
613 E = AnUsage.getRequiredSet().end(); I != E; ++I) {
614 Pass *Impl = getAnalysisPass(*I);
616 assert(0 && "Analysis used but not available!");
617 // TODO: P->AnalysisImpls.push_back(std::make_pair(*I, Impl));
621 //===----------------------------------------------------------------------===//
622 // BasicBlockPassManager_New implementation
624 /// Add pass P into PassVector and return true. If this pass is not
625 /// manageable by this manager then return false.
627 BasicBlockPassManager_New::addPass(Pass *P) {
629 BasicBlockPass *BP = dynamic_cast<BasicBlockPass*>(P);
633 // If this pass does not preserve anlysis that is used by other passes
634 // managed by this manager than it is not a suiable pass for this manager.
635 if (!manageablePass(P))
638 addPassToManager (BP);
643 /// Execute all of the passes scheduled for execution by invoking
644 /// runOnBasicBlock method. Keep track of whether any of the passes modifies
645 /// the function, and if so, return true.
647 BasicBlockPassManager_New::runOnFunction(Function &F) {
649 bool Changed = false;
650 initializeAnalysisInfo();
652 for (Function::iterator I = F.begin(), E = F.end(); I != E; ++I)
653 for (std::vector<Pass *>::iterator itr = passVectorBegin(),
654 e = passVectorEnd(); itr != e; ++itr) {
657 BasicBlockPass *BP = dynamic_cast<BasicBlockPass*>(P);
658 Changed |= BP->runOnBasicBlock(*I);
659 removeNotPreservedAnalysis(P);
660 recordAvailableAnalysis(P);
666 /// Return true IFF AnalysisID AID is currently available.
667 /// TODO : Replace this method with getAnalysisPass()
668 Pass * BasicBlockPassManager_New::getAnalysisPassFromManager(AnalysisID AID) {
669 return getAnalysisPass(AID);
672 //===----------------------------------------------------------------------===//
673 // FunctionPassManager_New implementation
675 /// Create new Function pass manager
676 FunctionPassManager_New::FunctionPassManager_New() {
677 FPM = new FunctionPassManagerImpl_New(0);
680 /// add - Add a pass to the queue of passes to run. This passes
681 /// ownership of the Pass to the PassManager. When the
682 /// PassManager_X is destroyed, the pass will be destroyed as well, so
683 /// there is no need to delete the pass. (TODO delete passes.)
684 /// This implies that all passes MUST be allocated with 'new'.
685 void FunctionPassManager_New::add(Pass *P) {
689 /// Execute all of the passes scheduled for execution. Keep
690 /// track of whether any of the passes modifies the function, and if
692 bool FunctionPassManager_New::runOnModule(Module &M) {
693 return FPM->runOnModule(M);
696 /// run - Execute all of the passes scheduled for execution. Keep
697 /// track of whether any of the passes modifies the function, and if
700 bool FunctionPassManager_New::run(Function &F) {
702 if (MP->materializeFunction(&F, &errstr)) {
703 cerr << "Error reading bytecode file: " << errstr << "\n";
706 return FPM->runOnFunction(F);
710 /// doInitialization - Run all of the initializers for the function passes.
712 bool FunctionPassManager_New::doInitialization() {
713 return FPM->doInitialization(*MP->getModule());
716 /// doFinalization - Run all of the initializers for the function passes.
718 bool FunctionPassManager_New::doFinalization() {
719 return FPM->doFinalization(*MP->getModule());
722 //===----------------------------------------------------------------------===//
723 // FunctionPassManagerImpl_New implementation
725 /// Add pass P into the pass manager queue. If P is a BasicBlockPass then
726 /// either use it into active basic block pass manager or create new basic
727 /// block pass manager to handle pass P.
729 FunctionPassManagerImpl_New::addPass(Pass *P) {
731 // If P is a BasicBlockPass then use BasicBlockPassManager_New.
732 if (BasicBlockPass *BP = dynamic_cast<BasicBlockPass*>(P)) {
734 if (!activeBBPassManager || !activeBBPassManager->addPass(BP)) {
736 // If active manager exists then clear its analysis info.
737 if (activeBBPassManager)
738 activeBBPassManager->initializeAnalysisInfo();
740 // Create and add new manager
741 activeBBPassManager =
742 new BasicBlockPassManager_New(getDepth() + 1);
743 addPassToManager(activeBBPassManager, false);
745 // Add pass into new manager. This time it must succeed.
746 if (!activeBBPassManager->addPass(BP))
747 assert(0 && "Unable to add Pass");
750 if (!ForcedLastUses.empty())
751 TPM->setLastUser(ForcedLastUses, this);
756 FunctionPass *FP = dynamic_cast<FunctionPass *>(P);
760 // If this pass does not preserve anlysis that is used by other passes
761 // managed by this manager than it is not a suiable pass for this manager.
762 if (!manageablePass(P))
765 addPassToManager (FP);
767 // If active manager exists then clear its analysis info.
768 if (activeBBPassManager) {
769 activeBBPassManager->initializeAnalysisInfo();
770 activeBBPassManager = NULL;
776 /// Execute all of the passes scheduled for execution by invoking
777 /// runOnFunction method. Keep track of whether any of the passes modifies
778 /// the function, and if so, return true.
779 bool FunctionPassManagerImpl_New::runOnModule(Module &M) {
781 bool Changed = false;
782 initializeAnalysisInfo();
784 for (Module::iterator I = M.begin(), E = M.end(); I != E; ++I)
785 for (std::vector<Pass *>::iterator itr = passVectorBegin(),
786 e = passVectorEnd(); itr != e; ++itr) {
789 FunctionPass *FP = dynamic_cast<FunctionPass*>(P);
790 Changed |= FP->runOnFunction(*I);
791 removeNotPreservedAnalysis(P);
792 recordAvailableAnalysis(P);
798 /// Execute all of the passes scheduled for execution by invoking
799 /// runOnFunction method. Keep track of whether any of the passes modifies
800 /// the function, and if so, return true.
801 bool FunctionPassManagerImpl_New::runOnFunction(Function &F) {
803 bool Changed = false;
804 initializeAnalysisInfo();
806 for (std::vector<Pass *>::iterator itr = passVectorBegin(),
807 e = passVectorEnd(); itr != e; ++itr) {
810 FunctionPass *FP = dynamic_cast<FunctionPass*>(P);
811 Changed |= FP->runOnFunction(F);
812 removeNotPreservedAnalysis(P);
813 recordAvailableAnalysis(P);
820 /// Return true IFF AnalysisID AID is currently available.
821 /// TODO : Replace this method with getAnalysisPass()
822 Pass *FunctionPassManagerImpl_New::getAnalysisPassFromManager(AnalysisID AID) {
824 Pass *P = getAnalysisPass(AID);
828 if (activeBBPassManager &&
829 activeBBPassManager->getAnalysisPass(AID) != 0)
830 return activeBBPassManager->getAnalysisPass(AID);
832 // TODO : Check inactive managers
836 inline bool FunctionPassManagerImpl_New::doInitialization(Module &M) {
837 bool Changed = false;
839 for (std::vector<Pass *>::iterator itr = passVectorBegin(),
840 e = passVectorEnd(); itr != e; ++itr) {
843 FunctionPass *FP = dynamic_cast<FunctionPass*>(P);
844 Changed |= FP->doInitialization(M);
850 inline bool FunctionPassManagerImpl_New::doFinalization(Module &M) {
851 bool Changed = false;
853 for (std::vector<Pass *>::iterator itr = passVectorBegin(),
854 e = passVectorEnd(); itr != e; ++itr) {
857 FunctionPass *FP = dynamic_cast<FunctionPass*>(P);
858 Changed |= FP->doFinalization(M);
865 //===----------------------------------------------------------------------===//
866 // ModulePassManager implementation
868 /// Add P into pass vector if it is manageble. If P is a FunctionPass
869 /// then use FunctionPassManagerImpl_New to manage it. Return false if P
870 /// is not manageable by this manager.
872 ModulePassManager_New::addPass(Pass *P) {
874 // If P is FunctionPass then use function pass maanager.
875 if (FunctionPass *FP = dynamic_cast<FunctionPass*>(P)) {
877 if (!activeFunctionPassManager
878 || !activeFunctionPassManager->addPass(P)) {
880 // If active manager exists then clear its analysis info.
881 if (activeFunctionPassManager)
882 activeFunctionPassManager->initializeAnalysisInfo();
884 // Create and add new manager
885 activeFunctionPassManager =
886 new FunctionPassManagerImpl_New(getDepth() + 1);
887 addPassToManager(activeFunctionPassManager, false);
889 // Add pass into new manager. This time it must succeed.
890 if (!activeFunctionPassManager->addPass(FP))
891 assert(0 && "Unable to add pass");
894 if (!ForcedLastUses.empty())
895 TPM->setLastUser(ForcedLastUses, this);
900 ModulePass *MP = dynamic_cast<ModulePass *>(P);
904 // If this pass does not preserve anlysis that is used by other passes
905 // managed by this manager than it is not a suiable pass for this manager.
906 if (!manageablePass(P))
909 addPassToManager(MP);
910 // If active manager exists then clear its analysis info.
911 if (activeFunctionPassManager) {
912 activeFunctionPassManager->initializeAnalysisInfo();
913 activeFunctionPassManager = NULL;
920 /// Execute all of the passes scheduled for execution by invoking
921 /// runOnModule method. Keep track of whether any of the passes modifies
922 /// the module, and if so, return true.
924 ModulePassManager_New::runOnModule(Module &M) {
925 bool Changed = false;
926 initializeAnalysisInfo();
928 for (std::vector<Pass *>::iterator itr = passVectorBegin(),
929 e = passVectorEnd(); itr != e; ++itr) {
932 ModulePass *MP = dynamic_cast<ModulePass*>(P);
933 Changed |= MP->runOnModule(M);
934 removeNotPreservedAnalysis(P);
935 recordAvailableAnalysis(P);
941 /// Return true IFF AnalysisID AID is currently available.
942 /// TODO : Replace this method with getAnalysisPass()
943 Pass *ModulePassManager_New::getAnalysisPassFromManager(AnalysisID AID) {
945 Pass *P = getAnalysisPass(AID);
949 if (activeFunctionPassManager &&
950 activeFunctionPassManager->getAnalysisPass(AID) != 0)
951 return activeFunctionPassManager->getAnalysisPass(AID);
953 // TODO : Check inactive managers
957 //===----------------------------------------------------------------------===//
958 // PassManagerImpl implementation
960 /// Return true IFF AnalysisID AID is currently available.
961 /// TODO : Replace this method with getAnalysisPass()
962 Pass *PassManagerImpl_New::getAnalysisPassFromManager(AnalysisID AID) {
965 for (std::vector<ModulePassManager_New *>::iterator itr = PassManagers.begin(),
966 e = PassManagers.end(); !P && itr != e; ++itr)
967 P = (*itr)->getAnalysisPassFromManager(AID);
971 // PassManager_New implementation
972 /// Add P into active pass manager or use new module pass manager to
974 bool PassManagerImpl_New::addPass(Pass *P) {
976 if (!activeManager || !activeManager->addPass(P)) {
977 activeManager = new ModulePassManager_New(getDepth() + 1);
978 PassManagers.push_back(activeManager);
979 return activeManager->addPass(P);
984 /// run - Execute all of the passes scheduled for execution. Keep track of
985 /// whether any of the passes modifies the module, and if so, return true.
986 bool PassManagerImpl_New::run(Module &M) {
988 bool Changed = false;
989 for (std::vector<ModulePassManager_New *>::iterator itr = PassManagers.begin(),
990 e = PassManagers.end(); itr != e; ++itr) {
991 ModulePassManager_New *pm = *itr;
992 Changed |= pm->runOnModule(M);
997 //===----------------------------------------------------------------------===//
998 // PassManager implementation
1000 /// Create new pass manager
1001 PassManager_New::PassManager_New() {
1002 PM = new PassManagerImpl_New(0);
1005 /// add - Add a pass to the queue of passes to run. This passes ownership of
1006 /// the Pass to the PassManager. When the PassManager is destroyed, the pass
1007 /// will be destroyed as well, so there is no need to delete the pass. This
1008 /// implies that all passes MUST be allocated with 'new'.
1010 PassManager_New::add(Pass *P) {
1014 /// run - Execute all of the passes scheduled for execution. Keep track of
1015 /// whether any of the passes modifies the module, and if so, return true.
1017 PassManager_New::run(Module &M) {