From 5ca98fd98791947eba83a1ed3f2c8191ef7afa6c Mon Sep 17 00:00:00 2001
From: Dimitry Andric <dim@FreeBSD.org>
Date: Mon, 24 Nov 2014 09:08:18 +0000
Subject: Vendor import of llvm RELEASE_350/final tag r216957 (effectively,
 3.5.0 release):
 https://llvm.org/svn/llvm-project/llvm/tags/RELEASE_350/final@216957

---
 lib/CodeGen/GCMetadata.cpp | 29 +++++++++++------------------
 1 file changed, 11 insertions(+), 18 deletions(-)

(limited to 'lib/CodeGen/GCMetadata.cpp')

diff --git a/lib/CodeGen/GCMetadata.cpp b/lib/CodeGen/GCMetadata.cpp
index ef5247c2edff..c3e4f3ee2fb1 100644
--- a/lib/CodeGen/GCMetadata.cpp
+++ b/lib/CodeGen/GCMetadata.cpp
@@ -32,12 +32,12 @@ namespace {
   public:
     explicit Printer(raw_ostream &OS) : FunctionPass(ID), OS(OS) {}
 
-    
-    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;
   };
 
 }
@@ -61,10 +61,6 @@ GCModuleInfo::GCModuleInfo()
   initializeGCModuleInfoPass(*PassRegistry::getPassRegistry());
 }
 
-GCModuleInfo::~GCModuleInfo() {
-  clear();
-}
-
 GCStrategy *GCModuleInfo::getOrCreateStrategy(const Module *M,
                                               const std::string &Name) {
   strategy_map_type::iterator NMI = StrategyMap.find(Name);
@@ -74,17 +70,17 @@ GCStrategy *GCModuleInfo::getOrCreateStrategy(const Module *M,
   for (GCRegistry::iterator I = GCRegistry::begin(),
                             E = GCRegistry::end(); I != E; ++I) {
     if (Name == I->getName()) {
-      GCStrategy *S = I->instantiate();
+      std::unique_ptr<GCStrategy> S = I->instantiate();
       S->M = M;
       S->Name = Name;
-      StrategyMap.GetOrCreateValue(Name).setValue(S);
-      StrategyList.push_back(S);
-      return S;
+      StrategyMap.GetOrCreateValue(Name).setValue(S.get());
+      StrategyList.push_back(std::move(S));
+      return StrategyList.back().get();
     }
   }
  
   dbgs() << "unsupported GC: " << Name << "\n";
-  llvm_unreachable(0);
+  llvm_unreachable(nullptr);
 }
 
 GCFunctionInfo &GCModuleInfo::getFunctionInfo(const Function &F) {
@@ -104,9 +100,6 @@ GCFunctionInfo &GCModuleInfo::getFunctionInfo(const Function &F) {
 void GCModuleInfo::clear() {
   FInfoMap.clear();
   StrategyMap.clear();
-  
-  for (iterator I = begin(), E = end(); I != E; ++I)
-    delete *I;
   StrategyList.clear();
 }
 
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