Move ownership of GCStrategy objects to LLVMContext

[oota-llvm.git] / lib / CodeGen / GCMetadata.cpp

diff --git a/lib/CodeGen/GCMetadata.cpp b/lib/CodeGen/GCMetadata.cpp
index 32bc7d785b60869d61d170a4162d349cba374a85..6f4fa11d6d9fcd3df7388b6de3867ef93297be96 100644 (file)
--- a/lib/CodeGen/GCMetadata.cpp
+++ b/lib/CodeGen/GCMetadata.cpp
@@ -12,12 +12,12 @@
 //===----------------------------------------------------------------------===//
 
 #include "llvm/CodeGen/GCMetadata.h"
-#include "llvm/CodeGen/GCStrategy.h"
 #include "llvm/CodeGen/MachineFrameInfo.h"
-#include "llvm/Pass.h"
 #include "llvm/CodeGen/Passes.h"
-#include "llvm/Function.h"
+#include "llvm/IR/Function.h"
+#include "llvm/IR/GCStrategy.h"
 #include "llvm/MC/MCSymbol.h"
+#include "llvm/Pass.h"
 #include "llvm/Support/Debug.h"
 #include "llvm/Support/ErrorHandling.h"
 #include "llvm/Support/raw_ostream.h"
@@ -30,33 +30,20 @@ namespace {
     raw_ostream &OS;
     
   public:
-    Printer() : FunctionPass(&ID), OS(errs()) {}
-    explicit Printer(raw_ostream &OS) : FunctionPass(&ID), OS(OS) {}
+    explicit Printer(raw_ostream &OS) : FunctionPass(ID), OS(OS) {}
 
-    
-    const char *getPassName() const;
-    void getAnalysisUsage(AnalysisUsage &AU) const;
-    
-    bool runOnFunction(Function &F);
-  };
-  
-  class Deleter : public FunctionPass {
-    static char ID;
-    
-  public:
-    Deleter();
-    
-    const char *getPassName() const;
-    void getAnalysisUsage(AnalysisUsage &AU) const;
-    
-    bool runOnFunction(Function &F);
-    bool doFinalization(Module &M);
+
+    const char *getPassName() const override;
+    void getAnalysisUsage(AnalysisUsage &AU) const override;
+
+    bool runOnFunction(Function &F) override;
+    bool doFinalization(Module &M) override;
   };
-  
+
 }
 
 INITIALIZE_PASS(GCModuleInfo, "collector-metadata",
-                "Create Garbage Collector Module Metadata", false, false);
+                "Create Garbage Collector Module Metadata", false, false)
 
 // -----------------------------------------------------------------------------
 
@@ -70,32 +57,8 @@ GCFunctionInfo::~GCFunctionInfo() {}
 char GCModuleInfo::ID = 0;
 
 GCModuleInfo::GCModuleInfo()
-  : ImmutablePass(&ID) {}
-
-GCModuleInfo::~GCModuleInfo() {
-  clear();
-}
-
-GCStrategy *GCModuleInfo::getOrCreateStrategy(const Module *M,
-                                              const std::string &Name) {
-  strategy_map_type::iterator NMI = StrategyMap.find(Name);
-  if (NMI != StrategyMap.end())
-    return NMI->getValue();
-  
-  for (GCRegistry::iterator I = GCRegistry::begin(),
-                            E = GCRegistry::end(); I != E; ++I) {
-    if (Name == I->getName()) {
-      GCStrategy *S = I->instantiate();
-      S->M = M;
-      S->Name = Name;
-      StrategyMap.GetOrCreateValue(Name).setValue(S);
-      StrategyList.push_back(S);
-      return S;
-    }
-  }
- 
-  dbgs() << "unsupported GC: " << Name << "\n";
-  llvm_unreachable(0);
+    : ImmutablePass(ID) {
+  initializeGCModuleInfoPass(*PassRegistry::getPassRegistry());
 }
 
 GCFunctionInfo &GCModuleInfo::getFunctionInfo(const Function &F) {
@@ -106,18 +69,24 @@ GCFunctionInfo &GCModuleInfo::getFunctionInfo(const Function &F) {
   if (I != FInfoMap.end())
     return *I->second;
   
-  GCStrategy *S = getOrCreateStrategy(F.getParent(), F.getGC());
-  GCFunctionInfo *GFI = S->insertFunctionInfo(F);
+  GCStrategy *S = F.getGCStrategy();
+  if (!S) {
+    std::string error = std::string("unsupported GC: ") + F.getGC();
+    report_fatal_error(error);
+  }
+  // Save the fact this strategy is associated with this module.  Note that
+  // these are non-owning references, the GCStrategy remains owned by the
+  // Context. 
+  StrategyList.push_back(S);
+  Functions.push_back(make_unique<GCFunctionInfo>(F, *S));
+  GCFunctionInfo *GFI = Functions.back().get();
   FInfoMap[&F] = GFI;
   return *GFI;
 }
 
 void GCModuleInfo::clear() {
+  Functions.clear();
   FInfoMap.clear();
-  StrategyMap.clear();
-  
-  for (iterator I = begin(), E = end(); I != E; ++I)
-    delete *I;
   StrategyList.clear();
 }
 
@@ -142,12 +111,12 @@ void Printer::getAnalysisUsage(AnalysisUsage &AU) const {
 
 static const char *DescKind(GC::PointKind Kind) {
   switch (Kind) {
-    default: llvm_unreachable("Unknown GC point kind");
     case GC::Loop:     return "loop";
     case GC::Return:   return "return";
     case GC::PreCall:  return "pre-call";
     case GC::PostCall: return "post-call";
   }
+  llvm_unreachable("Invalid point kind");
 }
 
 bool Printer::runOnFunction(Function &F) {
@@ -155,12 +124,12 @@ bool Printer::runOnFunction(Function &F) {
   
   GCFunctionInfo *FD = &getAnalysis<GCModuleInfo>().getFunctionInfo(F);
   
-  OS << "GC roots for " << FD->getFunction().getNameStr() << ":\n";
+  OS << "GC roots for " << FD->getFunction().getName() << ":\n";
   for (GCFunctionInfo::roots_iterator RI = FD->roots_begin(),
                                       RE = FD->roots_end(); RI != RE; ++RI)
     OS << "\t" << RI->Num << "\t" << RI->StackOffset << "[sp]\n";
   
-  OS << "GC safe points for " << FD->getFunction().getNameStr() << ":\n";
+  OS << "GC safe points for " << FD->getFunction().getName() << ":\n";
   for (GCFunctionInfo::iterator PI = FD->begin(),
                                 PE = FD->end(); PI != PE; ++PI) {
     
@@ -181,32 +150,9 @@ bool Printer::runOnFunction(Function &F) {
   return false;
 }
 
-// -----------------------------------------------------------------------------
-
-char Deleter::ID = 0;
-
-FunctionPass *llvm::createGCInfoDeleter() {
-  return new Deleter();
-}
-
-Deleter::Deleter() : FunctionPass(&ID) {}
-
-const char *Deleter::getPassName() const {
-  return "Delete Garbage Collector Information";
-}
-
-void Deleter::getAnalysisUsage(AnalysisUsage &AU) const {
-  AU.setPreservesAll();
-  AU.addRequired<GCModuleInfo>();
-}
-
-bool Deleter::runOnFunction(Function &MF) {
-  return false;
-}
-
-bool Deleter::doFinalization(Module &M) {
+bool Printer::doFinalization(Module &M) {
   GCModuleInfo *GMI = getAnalysisIfAvailable<GCModuleInfo>();
-  assert(GMI && "Deleter didn't require GCModuleInfo?!");
+  assert(GMI && "Printer didn't require GCModuleInfo?!");
   GMI->clear();
   return false;
 }