This is the initial check-in for adding register scavenging to PPC. (Currently,

[oota-llvm.git] / lib / VMCore / Pass.cpp

diff --git a/lib/VMCore/Pass.cpp b/lib/VMCore/Pass.cpp
index b593d475ca0efe3119cb0edf5b5779d1f57a4de4..fc92a95a929ba764801545589999562ceb53a3f9 100644 (file)
--- a/lib/VMCore/Pass.cpp
+++ b/lib/VMCore/Pass.cpp
@@ -2,8 +2,8 @@
 //
 //                     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.
 //
 //===----------------------------------------------------------------------===//
 //
@@ -18,7 +18,6 @@
 #include "llvm/ModuleProvider.h"
 #include "llvm/ADT/STLExtras.h"
 #include "llvm/Support/ManagedStatic.h"
-#include "llvm/Support/TypeInfo.h"
 #include <algorithm>
 #include <set>
 using namespace llvm;
@@ -27,6 +26,11 @@ using namespace llvm;
 // Pass Implementation
 //
 
+// Force out-of-line virtual method.
+Pass::~Pass() { 
+  delete Resolver; 
+}
+
 // Force out-of-line virtual method.
 ModulePass::~ModulePass() { }
 
@@ -44,7 +48,7 @@ void Pass::dumpPassStructure(unsigned Offset) {
 const char *Pass::getPassName() const {
   if (const PassInfo *PI = getPassInfo())
     return PI->getPassName();
-  return typeid(*this).name();
+  return "Unnamed pass: implement Pass::getPassName()";
 }
 
 // print - Print out the internal state of the pass.  This is called by Analyze
@@ -86,7 +90,8 @@ bool FunctionPass::runOnModule(Module &M) {
 // run - On a function, we simply initialize, run the function, then finalize.
 //
 bool FunctionPass::run(Function &F) {
-  if (F.isDeclaration()) return false;// Passes are not run on external functions!
+  // Passes are not run on external functions!
+  if (F.isDeclaration()) return false;
 
   bool Changed = doInitialization(*F.getParent());
   Changed |= runOnFunction(F);
@@ -128,7 +133,7 @@ namespace {
 class PassRegistrar {
   /// PassInfoMap - Keep track of the passinfo object for each registered llvm
   /// pass.
-  std::map<TypeInfo, PassInfo*> PassInfoMap;
+  std::map<intptr_t, PassInfo*> PassInfoMap;
   
   /// AnalysisGroupInfo - Keep track of information for each analysis group.
   struct AnalysisGroupInfo {
@@ -142,19 +147,19 @@ class PassRegistrar {
 
 public:
   
-  const PassInfo *GetPassInfo(const std::type_info &TI) const {
-    std::map<TypeInfo, PassInfo*>::const_iterator I = PassInfoMap.find(TI);
+  const PassInfo *GetPassInfo(intptr_t TI) const {
+    std::map<intptr_t, PassInfo*>::const_iterator I = PassInfoMap.find(TI);
     return I != PassInfoMap.end() ? I->second : 0;
   }
   
   void RegisterPass(PassInfo &PI) {
     bool Inserted =
-      PassInfoMap.insert(std::make_pair(TypeInfo(PI.getTypeInfo()),&PI)).second;
+      PassInfoMap.insert(std::make_pair(PI.getTypeInfo(),&PI)).second;
     assert(Inserted && "Pass registered multiple times!");
   }
   
   void UnregisterPass(PassInfo &PI) {
-    std::map<TypeInfo, PassInfo*>::iterator I =
+    std::map<intptr_t, PassInfo*>::iterator I =
       PassInfoMap.find(PI.getTypeInfo());
     assert(I != PassInfoMap.end() && "Pass registered but not in map!");
     
@@ -163,7 +168,7 @@ public:
   }
   
   void EnumerateWith(PassRegistrationListener *L) {
-    for (std::map<TypeInfo, PassInfo*>::const_iterator I = PassInfoMap.begin(),
+    for (std::map<intptr_t, PassInfo*>::const_iterator I = PassInfoMap.begin(),
          E = PassInfoMap.end(); I != E; ++I)
       L->passEnumerate(I->second);
   }
@@ -189,22 +194,31 @@ public:
 };
 }
 
-static ManagedStatic<PassRegistrar> PassRegistrarObj;
 static std::vector<PassRegistrationListener*> *Listeners = 0;
 
+// FIXME: This should use ManagedStatic to manage the pass registrar.
+// Unfortunately, we can't do this, because passes are registered with static
+// ctors, and having llvm_shutdown clear this map prevents successful
+// ressurection after llvm_shutdown is run.
+static PassRegistrar *getPassRegistrar() {
+  static PassRegistrar *PassRegistrarObj = 0;
+  if (!PassRegistrarObj)
+    PassRegistrarObj = new PassRegistrar();
+  return PassRegistrarObj;
+}
+
 // getPassInfo - Return the PassInfo data structure that corresponds to this
 // pass...
 const PassInfo *Pass::getPassInfo() const {
-  if (PassInfoCache) return PassInfoCache;
-  return lookupPassInfo(typeid(*this));
+  return lookupPassInfo(PassID);
 }
 
-const PassInfo *Pass::lookupPassInfo(const std::type_info &TI) {
-  return PassRegistrarObj->GetPassInfo(TI);
+const PassInfo *Pass::lookupPassInfo(intptr_t TI) {
+  return getPassRegistrar()->GetPassInfo(TI);
 }
 
 void RegisterPassBase::registerPass() {
-  PassRegistrarObj->RegisterPass(PIObj);
+  getPassRegistrar()->RegisterPass(PIObj);
 
   // Notify any listeners.
   if (Listeners)
@@ -214,7 +228,7 @@ void RegisterPassBase::registerPass() {
 }
 
 void RegisterPassBase::unregisterPass() {
-  PassRegistrarObj->UnregisterPass(PIObj);
+  getPassRegistrar()->UnregisterPass(PIObj);
 }
 
 //===----------------------------------------------------------------------===//
@@ -223,12 +237,12 @@ void RegisterPassBase::unregisterPass() {
 
 // RegisterAGBase implementation
 //
-RegisterAGBase::RegisterAGBase(const std::type_info &Interface,
-                               const std::type_info *Pass, bool isDefault)
-  : RegisterPassBase(Interface),
+RegisterAGBase::RegisterAGBase(intptr_t InterfaceID,
+                               intptr_t PassID, bool isDefault)
+  : RegisterPassBase(InterfaceID),
     ImplementationInfo(0), isDefaultImplementation(isDefault) {
 
-  InterfaceInfo = const_cast<PassInfo*>(Pass::lookupPassInfo(Interface));
+  InterfaceInfo = const_cast<PassInfo*>(Pass::lookupPassInfo(InterfaceID));
   if (InterfaceInfo == 0) {
     // First reference to Interface, register it now.
     registerPass();
@@ -237,8 +251,8 @@ RegisterAGBase::RegisterAGBase(const std::type_info &Interface,
   assert(PIObj.isAnalysisGroup() &&
          "Trying to join an analysis group that is a normal pass!");
 
-  if (Pass) {
-    ImplementationInfo = Pass::lookupPassInfo(*Pass);
+  if (PassID) {
+    ImplementationInfo = Pass::lookupPassInfo(PassID);
     assert(ImplementationInfo &&
            "Must register pass before adding to AnalysisGroup!");
 
@@ -247,7 +261,7 @@ RegisterAGBase::RegisterAGBase(const std::type_info &Interface,
     PassInfo *IIPI = const_cast<PassInfo*>(ImplementationInfo);
     IIPI->addInterfaceImplemented(InterfaceInfo);
     
-    PassRegistrarObj->RegisterAnalysisGroup(InterfaceInfo, IIPI, isDefault);
+    getPassRegistrar()->RegisterAnalysisGroup(InterfaceInfo, IIPI, isDefault);
   }
 }
 
@@ -286,7 +300,7 @@ PassRegistrationListener::~PassRegistrationListener() {
 // passEnumerate callback on each PassInfo object.
 //
 void PassRegistrationListener::enumeratePasses() {
-  PassRegistrarObj->EnumerateWith(this);
+  getPassRegistrar()->EnumerateWith(this);
 }
 
 //===----------------------------------------------------------------------===//