- Added calls to doInitialization/doFinalization to immutable passes

- fixed ordering of calls to doFinalization to be the reverse of the pass run order due to potential dependencies
- fixed machine module info to operate in the doInitialization/doFinalization model, also fixes some FIXMEs

reviewed by Evan Cheng <evan.cheng@apple.com>

llvm-svn: 169391

llvm/include/llvm/CodeGen/MachineModuleInfo.h

@@ -180,6 +180,10 @@ public:
                     const MCObjectFileInfo *MOFI);
   ~MachineModuleInfo();
 
+  // Initialization and Finalization
+  virtual bool doInitialization(Module &);
+  virtual bool doFinalization(Module &);
+
   /// EndFunction - Discard function meta information.
   ///
   void EndFunction();

llvm/lib/CodeGen/MachineModuleInfo.cpp

@@ -253,15 +253,8 @@ void MMIAddrLabelMapCallbackPtr::allUsesReplacedWith(Value *V2) {
 MachineModuleInfo::MachineModuleInfo(const MCAsmInfo &MAI,
                                      const MCRegisterInfo &MRI,
                                      const MCObjectFileInfo *MOFI)
-  : ImmutablePass(ID), Context(MAI, MRI, MOFI),
-    ObjFileMMI(0), CompactUnwindEncoding(0), CurCallSite(0), CallsEHReturn(0),
-    CallsUnwindInit(0), DbgInfoAvailable(false),
-    UsesVAFloatArgument(false) {
+  : ImmutablePass(ID), Context(MAI, MRI, MOFI) {
   initializeMachineModuleInfoPass(*PassRegistry::getPassRegistry());
-  // Always emit some info, by default "no personality" info.
-  Personalities.push_back(NULL);
-  AddrLabelSymbols = 0;
-  TheModule = 0;
 }
 
 MachineModuleInfo::MachineModuleInfo()
@@ -274,11 +267,31 @@ MachineModuleInfo::MachineModuleInfo()
 
 MachineModuleInfo::~MachineModuleInfo() {
   delete ObjFileMMI;
+}
+
+bool MachineModuleInfo::doInitialization(Module &M) {
+  ObjFileMMI = 0;
+  CompactUnwindEncoding = 0;
+  CurCallSite = 0;
+  CallsEHReturn = 0;
+  CallsUnwindInit = 0;
+  DbgInfoAvailable = UsesVAFloatArgument = false; 
+  // Always emit some info, by default "no personality" info.
+  Personalities.push_back(NULL);
+  AddrLabelSymbols = 0;
+  TheModule = 0;
+
+  return false;
+}
+
+bool MachineModuleInfo::doFinalization(Module &M) {
+
+  Personalities.clear();
 
-  // FIXME: Why isn't doFinalization being called??
-  //assert(AddrLabelSymbols == 0 && "doFinalization not called");
   delete AddrLabelSymbols;
   AddrLabelSymbols = 0;
+
+  return false;
 }
 
 /// EndFunction - Discard function meta information.

llvm/lib/VMCore/PassManager.cpp

@@ -1333,7 +1333,7 @@ bool BBPassManager::doInitialization(Module &M) {
 bool BBPassManager::doFinalization(Module &M) {
   bool Changed = false;
 
-  for (unsigned Index = 0; Index < getNumContainedPasses(); ++Index)
+  for (int Index = getNumContainedPasses() - 1; Index >= 0; --Index)
     Changed |= getContainedPass(Index)->doFinalization(M);
 
   return Changed;
@@ -1423,6 +1423,12 @@ bool FunctionPassManagerImpl::doInitialization(Module &M) {
   dumpArguments();
   dumpPasses();
 
+  SmallVectorImpl<ImmutablePass *>& IPV = getImmutablePasses();
+  for (SmallVectorImpl<ImmutablePass *>::const_iterator I = IPV.begin(),
+       E = IPV.end(); I != E; ++I) {
+    Changed |= (*I)->doInitialization(M);
+  }
+
   for (unsigned Index = 0; Index < getNumContainedManagers(); ++Index)
     Changed |= getContainedManager(Index)->doInitialization(M);
 
@@ -1432,9 +1438,15 @@ bool FunctionPassManagerImpl::doInitialization(Module &M) {
 bool FunctionPassManagerImpl::doFinalization(Module &M) {
   bool Changed = false;
 
-  for (unsigned Index = 0; Index < getNumContainedManagers(); ++Index)
+  for (int Index = getNumContainedManagers() - 1; Index >= 0; --Index)
     Changed |= getContainedManager(Index)->doFinalization(M);
 
+  SmallVectorImpl<ImmutablePass *>& IPV = getImmutablePasses();
+  for (SmallVectorImpl<ImmutablePass *>::const_iterator I = IPV.begin(),
+       E = IPV.end(); I != E; ++I) {
+    Changed |= (*I)->doFinalization(M);
+  }
+
   return Changed;
 }
 
@@ -1554,7 +1566,7 @@ bool FPPassManager::doInitialization(Module &M) {
 bool FPPassManager::doFinalization(Module &M) {
   bool Changed = false;
 
-  for (unsigned Index = 0; Index < getNumContainedPasses(); ++Index)
+  for (int Index = getNumContainedPasses() - 1; Index >= 0; --Index)
     Changed |= getContainedPass(Index)->doFinalization(M);
   
   return Changed;
@@ -1611,7 +1623,7 @@ MPPassManager::runOnModule(Module &M) {
   }
 
   // Finalize module passes
-  for (unsigned Index = 0; Index < getNumContainedPasses(); ++Index)
+  for (int Index = getNumContainedPasses() - 1; Index >= 0; --Index)
     Changed |= getContainedPass(Index)->doFinalization(M);
 
   // Finalize on-the-fly passes
@@ -1682,9 +1694,21 @@ bool PassManagerImpl::run(Module &M) {
   dumpArguments();
   dumpPasses();
 
+  SmallVectorImpl<ImmutablePass *>& IPV = getImmutablePasses();
+  for (SmallVectorImpl<ImmutablePass *>::const_iterator I = IPV.begin(),
+       E = IPV.end(); I != E; ++I) {
+    Changed |= (*I)->doInitialization(M);
+  }
+
   initializeAllAnalysisInfo();
   for (unsigned Index = 0; Index < getNumContainedManagers(); ++Index)
     Changed |= getContainedManager(Index)->runOnModule(M);
+
+  for (SmallVectorImpl<ImmutablePass *>::const_iterator I = IPV.begin(),
+       E = IPV.end(); I != E; ++I) {
+    Changed |= (*I)->doFinalization(M);
+  }
+
   return Changed;
 }