Reapply r138695. Fix PassManager stack depths.

Patch by Xiaoyi Guo!

llvm-svn: 138737

llvm/include/llvm/Analysis/LoopPass.h

@@ -84,7 +84,7 @@ public:
 class LPPassManager : public FunctionPass, public PMDataManager {
 public:
   static char ID;
-  explicit LPPassManager(int Depth);
+  explicit LPPassManager();
 
   /// 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.

llvm/include/llvm/Analysis/RegionPass.h

@@ -88,7 +88,7 @@ class RGPassManager : public FunctionPass, public PMDataManager {
 
 public:
   static char ID;
-  explicit RGPassManager(int Depth);
+  explicit RGPassManager();
 
   /// @brief Execute all of the passes scheduled for execution.
   ///

llvm/include/llvm/LinkAllPasses.h

@@ -156,7 +156,7 @@ namespace {
       (void)new llvm::FindUsedTypes();
       (void)new llvm::ScalarEvolution();
       ((llvm::Function*)0)->viewCFGOnly();
-      llvm::RGPassManager RGM(0);
+      llvm::RGPassManager RGM;
       ((llvm::RegionPass*)0)->runOnRegion((llvm::Region*)0, RGM);
       llvm::AliasSetTracker X(*(llvm::AliasAnalysis*)0);
       X.add((llvm::Value*)0, 0, 0);  // for -print-alias-sets

llvm/include/llvm/PassManagers.h

@@ -263,7 +263,7 @@ private:
 class PMDataManager {
 public:
 
-  explicit PMDataManager(int Depth) : TPM(NULL), Depth(Depth) {
+  explicit PMDataManager() : TPM(NULL), Depth(0) {
     initializeAnalysisInfo();
   }
 
@@ -333,6 +333,7 @@ public:
   void setTopLevelManager(PMTopLevelManager *T) { TPM = T; }
 
   unsigned getDepth() const { return Depth; }
+  void setDepth(unsigned newDepth) { Depth = newDepth; }
 
   // Print routines used by debug-pass
   void dumpLastUses(Pass *P, unsigned Offset) const;
@@ -408,8 +409,8 @@ private:
 class FPPassManager : public ModulePass, public PMDataManager {
 public:
   static char ID;
-  explicit FPPassManager(int Depth) 
+  explicit FPPassManager() 
-  : ModulePass(ID), PMDataManager(Depth) { }
+  : ModulePass(ID), PMDataManager() { }
   
   /// 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.

llvm/lib/Analysis/IPA/CallGraphSCCPass.cpp

@@ -44,8 +44,8 @@ namespace {
 class CGPassManager : public ModulePass, public PMDataManager {
 public:
   static char ID;
-  explicit CGPassManager(int Depth) 
+  explicit CGPassManager() 
-    : ModulePass(ID), PMDataManager(Depth) { }
+    : ModulePass(ID), PMDataManager() { }
 
   /// 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.
@@ -543,7 +543,7 @@ void CallGraphSCCPass::assignPassManager(PMStack &PMS,
     PMDataManager *PMD = PMS.top();
 
     // [1] Create new Call Graph Pass Manager
-    CGP = new CGPassManager(PMD->getDepth() + 1);
+    CGP = new CGPassManager();
 
     // [2] Set up new manager's top level manager
     PMTopLevelManager *TPM = PMD->getTopLevelManager();

llvm/lib/Analysis/LoopPass.cpp

@@ -73,8 +73,8 @@ static void createDebugInfoProbe() {
 
 char LPPassManager::ID = 0;
 
-LPPassManager::LPPassManager(int Depth)
+LPPassManager::LPPassManager()
-  : FunctionPass(ID), PMDataManager(Depth) {
+  : FunctionPass(ID), PMDataManager() {
   skipThisLoop = false;
   redoThisLoop = false;
   LI = NULL;
@@ -357,8 +357,8 @@ void LoopPass::assignPassManager(PMStack &PMS,
     assert (!PMS.empty() && "Unable to create Loop Pass Manager");
     PMDataManager *PMD = PMS.top();
 
-    // [1] Create new Call Graph Pass Manager
+    // [1] Create new Loop Pass Manager
-    LPPM = new LPPassManager(PMD->getDepth() + 1);
+    LPPM = new LPPassManager();
     LPPM->populateInheritedAnalysis(PMS);
 
     // [2] Set up new manager's top level manager

llvm/lib/Analysis/RegionPass.cpp

@@ -27,8 +27,8 @@ using namespace llvm;
 
 char RGPassManager::ID = 0;
 
-RGPassManager::RGPassManager(int Depth)
+RGPassManager::RGPassManager()
-  : FunctionPass(ID), PMDataManager(Depth) {
+  : FunctionPass(ID), PMDataManager() {
   skipThisRegion = false;
   redoThisRegion = false;
   RI = NULL;
@@ -250,7 +250,7 @@ void RegionPass::assignPassManager(PMStack &PMS,
     PMDataManager *PMD = PMS.top();
 
     // [1] Create new Region Pass Manager
-    RGPM = new RGPassManager(PMD->getDepth() + 1);
+    RGPM = new RGPassManager();
     RGPM->populateInheritedAnalysis(PMS);
 
     // [2] Set up new manager's top level manager

llvm/lib/VMCore/PassManager.cpp

@@ -167,8 +167,8 @@ class BBPassManager : public PMDataManager, public FunctionPass {
 
 public:
   static char ID;
-  explicit BBPassManager(int Depth)
+  explicit BBPassManager()
-    : PMDataManager(Depth), FunctionPass(ID) {}
+    : PMDataManager(), FunctionPass(ID) {}
 
   /// Execute all of the passes scheduled for execution.  Keep track of
   /// whether any of the passes modifies the function, and if so, return true.
@@ -228,9 +228,9 @@ private:
   bool wasRun;
 public:
   static char ID;
-  explicit FunctionPassManagerImpl(int Depth) :
+  explicit FunctionPassManagerImpl() :
-    Pass(PT_PassManager, ID), PMDataManager(Depth),
+    Pass(PT_PassManager, ID), PMDataManager(),
-    PMTopLevelManager(new FPPassManager(1)), wasRun(false) {}
+    PMTopLevelManager(new FPPassManager()), wasRun(false) {}
 
   /// add - Add a pass to the queue of passes to run.  This passes ownership of
   /// the Pass to the PassManager.  When the PassManager is destroyed, the pass
@@ -303,8 +303,8 @@ char FunctionPassManagerImpl::ID = 0;
 class MPPassManager : public Pass, public PMDataManager {
 public:
   static char ID;
-  explicit MPPassManager(int Depth) :
+  explicit MPPassManager() :
-    Pass(PT_PassManager, ID), PMDataManager(Depth) { }
+    Pass(PT_PassManager, ID), PMDataManager() { }
 
   // Delete on the fly managers.
   virtual ~MPPassManager() {
@@ -388,9 +388,9 @@ class PassManagerImpl : public Pass,
 
 public:
   static char ID;
-  explicit PassManagerImpl(int Depth) :
+  explicit PassManagerImpl() :
-    Pass(PT_PassManager, ID), PMDataManager(Depth),
+    Pass(PT_PassManager, ID), PMDataManager(),
-                              PMTopLevelManager(new MPPassManager(1)) {}
+                              PMTopLevelManager(new MPPassManager()) {}
 
   /// add - Add a pass to the queue of passes to run.  This passes ownership of
   /// the Pass to the PassManager.  When the PassManager is destroyed, the pass
@@ -1340,7 +1340,7 @@ bool BBPassManager::doFinalization(Function &F) {
 
 /// Create new Function pass manager
 FunctionPassManager::FunctionPassManager(Module *m) : M(m) {
-  FPM = new FunctionPassManagerImpl(0);
+  FPM = new FunctionPassManagerImpl();
   // FPM is the top level manager.
   FPM->setTopLevelManager(FPM);
 
@@ -1626,7 +1626,7 @@ void MPPassManager::addLowerLevelRequiredPass(Pass *P, Pass *RequiredPass) {
 
   FunctionPassManagerImpl *FPP = OnTheFlyManagers[P];
   if (!FPP) {
-    FPP = new FunctionPassManagerImpl(0);
+    FPP = new FunctionPassManagerImpl();
     // FPP is the top level manager.
     FPP->setTopLevelManager(FPP);
 
@@ -1677,7 +1677,7 @@ bool PassManagerImpl::run(Module &M) {
 
 /// Create new pass manager
 PassManager::PassManager() {
-  PM = new PassManagerImpl(0);
+  PM = new PassManagerImpl();
   // PM is the top level manager
   PM->setTopLevelManager(PM);
 }
@@ -1761,13 +1761,23 @@ void PMStack::pop() {
 // Push PM on the stack and set its top level manager.
 void PMStack::push(PMDataManager *PM) {
   assert(PM && "Unable to push. Pass Manager expected");
+  assert(PM->getDepth()==0 && "Pass Manager depth set too early");
 
   if (!this->empty()) {
+    assert(PM->getPassManagerType() > this->top()->getPassManagerType()
+           && "pushing bad pass manager to PMStack");
     PMTopLevelManager *TPM = this->top()->getTopLevelManager();
 
     assert(TPM && "Unable to find top level manager");
     TPM->addIndirectPassManager(PM);
     PM->setTopLevelManager(TPM);
+    PM->setDepth(this->top()->getDepth()+1);
+  }
+  else {
+    assert(PM->getPassManagerType() == PMT_ModulePassManager
+           || PM->getPassManagerType() == PMT_FunctionPassManager
+           && "pushing bad pass manager to PMStack");
+    PM->setDepth(1);
   }
 
   S.push_back(PM);
@@ -1823,7 +1833,7 @@ void FunctionPass::assignPassManager(PMStack &PMS,
     PMDataManager *PMD = PMS.top();
 
     // [1] Create new Function Pass Manager
-    FPP = new FPPassManager(PMD->getDepth() + 1);
+    FPP = new FPPassManager();
     FPP->populateInheritedAnalysis(PMS);
 
     // [2] Set up new manager's top level manager
@@ -1860,7 +1870,7 @@ void BasicBlockPass::assignPassManager(PMStack &PMS,
     PMDataManager *PMD = PMS.top();
 
     // [1] Create new Basic Block Manager
-    BBP = new BBPassManager(PMD->getDepth() + 1);
+    BBP = new BBPassManager();
 
     // [2] Set up new manager's top level manager
     // Basic Block Pass Manager does not live by itself