Revert "unique_ptr-ify ownership of ASTConsumers"

This reverts commit r213308.

Reverting to have some on-list discussion/confirmation about the ongoing
direction of smart pointer usage in the LLVM project.

llvm-svn: 213324
diff --git a/clang-tools-extra/clang-modernize/Core/Transform.cpp b/clang-tools-extra/clang-modernize/Core/Transform.cpp
index 30caab6aa..6bb1478 100644
--- a/clang-tools-extra/clang-modernize/Core/Transform.cpp
+++ b/clang-tools-extra/clang-modernize/Core/Transform.cpp
@@ -49,8 +49,7 @@
     FactoryAdaptor(MatchFinder &Finder, Transform &Owner)
         : Finder(Finder), Owner(Owner) {}
 
-    std::unique_ptr<ASTConsumer> CreateASTConsumer(CompilerInstance &,
-                                                   StringRef) {
+    ASTConsumer *CreateASTConsumer(CompilerInstance &, StringRef) {
       return Finder.newASTConsumer();
     }
 
diff --git a/clang-tools-extra/clang-tidy/ClangTidy.cpp b/clang-tools-extra/clang-tidy/ClangTidy.cpp
index 3445fb5..98a5c61 100644
--- a/clang-tools-extra/clang-tidy/ClangTidy.cpp
+++ b/clang-tools-extra/clang-tidy/ClangTidy.cpp
@@ -179,10 +179,10 @@
 
 class ClangTidyASTConsumer : public MultiplexConsumer {
 public:
-  ClangTidyASTConsumer(std::vector<std::unique_ptr<ASTConsumer>> Consumers,
+  ClangTidyASTConsumer(const SmallVectorImpl<ASTConsumer *> &Consumers,
                        std::unique_ptr<ast_matchers::MatchFinder> Finder,
                        std::vector<std::unique_ptr<ClangTidyCheck>> Checks)
-      : MultiplexConsumer(std::move(Consumers)), Finder(std::move(Finder)),
+      : MultiplexConsumer(Consumers), Finder(std::move(Finder)),
         Checks(std::move(Checks)) {}
 
 private:
@@ -203,8 +203,8 @@
   }
 }
 
-std::unique_ptr<clang::ASTConsumer>
-ClangTidyASTConsumerFactory::CreateASTConsumer(
+
+clang::ASTConsumer *ClangTidyASTConsumerFactory::CreateASTConsumer(
     clang::CompilerInstance &Compiler, StringRef File) {
   // FIXME: Move this to a separate method, so that CreateASTConsumer doesn't
   // modify Compiler.
@@ -224,7 +224,7 @@
     Check->registerPPCallbacks(Compiler);
   }
 
-  std::vector<std::unique_ptr<ASTConsumer>> Consumers;
+  SmallVector<ASTConsumer *, 2> Consumers;
   if (!Checks.empty())
     Consumers.push_back(Finder->newASTConsumer());
 
@@ -240,16 +240,15 @@
     AnalyzerOptions->AnalysisDiagOpt = PD_NONE;
     AnalyzerOptions->AnalyzeNestedBlocks = true;
     AnalyzerOptions->eagerlyAssumeBinOpBifurcation = true;
-    std::unique_ptr<ento::AnalysisASTConsumer> AnalysisConsumer =
-        ento::CreateAnalysisConsumer(
-            Compiler.getPreprocessor(), Compiler.getFrontendOpts().OutputFile,
-            AnalyzerOptions, Compiler.getFrontendOpts().Plugins);
+    ento::AnalysisASTConsumer *AnalysisConsumer = ento::CreateAnalysisConsumer(
+        Compiler.getPreprocessor(), Compiler.getFrontendOpts().OutputFile,
+        AnalyzerOptions, Compiler.getFrontendOpts().Plugins);
     AnalysisConsumer->AddDiagnosticConsumer(
         new AnalyzerDiagnosticConsumer(Context));
-    Consumers.push_back(std::move(AnalysisConsumer));
+    Consumers.push_back(AnalysisConsumer);
   }
-  return llvm::make_unique<ClangTidyASTConsumer>(
-      std::move(Consumers), std::move(Finder), std::move(Checks));
+  return new ClangTidyASTConsumer(Consumers, std::move(Finder),
+                                  std::move(Checks));
 }
 
 std::vector<std::string>
@@ -340,8 +339,8 @@
     class Action : public ASTFrontendAction {
     public:
       Action(ClangTidyASTConsumerFactory *Factory) : Factory(Factory) {}
-      std::unique_ptr<ASTConsumer> CreateASTConsumer(CompilerInstance &Compiler,
-                                                     StringRef File) override {
+      ASTConsumer *CreateASTConsumer(CompilerInstance &Compiler,
+                                     StringRef File) override {
         return Factory->CreateASTConsumer(Compiler, File);
       }
 
diff --git a/clang-tools-extra/clang-tidy/ClangTidy.h b/clang-tools-extra/clang-tidy/ClangTidy.h
index cec52c0..8b181fc 100644
--- a/clang-tools-extra/clang-tidy/ClangTidy.h
+++ b/clang-tools-extra/clang-tidy/ClangTidy.h
@@ -99,8 +99,8 @@
   ClangTidyASTConsumerFactory(ClangTidyContext &Context);
 
   /// \brief Returns an ASTConsumer that runs the specified clang-tidy checks.
-  std::unique_ptr<clang::ASTConsumer>
-  CreateASTConsumer(clang::CompilerInstance &Compiler, StringRef File);
+  clang::ASTConsumer *CreateASTConsumer(clang::CompilerInstance &Compiler,
+                                        StringRef File);
 
   /// \brief Get the list of enabled checks.
   std::vector<std::string> getCheckNames(ChecksFilter &Filter);
diff --git a/clang-tools-extra/modularize/Modularize.cpp b/clang-tools-extra/modularize/Modularize.cpp
index 730e62f..db67754 100644
--- a/clang-tools-extra/modularize/Modularize.cpp
+++ b/clang-tools-extra/modularize/Modularize.cpp
@@ -652,10 +652,10 @@
         HadErrors(HadErrors) {}
 
 protected:
-  std::unique_ptr<clang::ASTConsumer>
-  CreateASTConsumer(CompilerInstance &CI, StringRef InFile) override {
-    return llvm::make_unique<CollectEntitiesConsumer>(
-        Entities, PPTracker, CI.getPreprocessor(), InFile, HadErrors);
+  virtual clang::ASTConsumer *CreateASTConsumer(CompilerInstance &CI,
+                                                StringRef InFile) {
+    return new CollectEntitiesConsumer(Entities, PPTracker,
+                                       CI.getPreprocessor(), InFile, HadErrors);
   }
 
 private:
diff --git a/clang-tools-extra/module-map-checker/ModuleMapChecker.cpp b/clang-tools-extra/module-map-checker/ModuleMapChecker.cpp
index 43f3cd45..d4c8b72 100644
--- a/clang-tools-extra/module-map-checker/ModuleMapChecker.cpp
+++ b/clang-tools-extra/module-map-checker/ModuleMapChecker.cpp
@@ -178,10 +178,9 @@
   ModuleMapCheckerAction(ModuleMapChecker &Checker) : Checker(Checker) {}
 
 protected:
-  std::unique_ptr<ASTConsumer> CreateASTConsumer(CompilerInstance &CI,
-                                                 StringRef InFile) override {
-    return llvm::make_unique<ModuleMapCheckerConsumer>(Checker,
-                                                       CI.getPreprocessor());
+  virtual ASTConsumer *CreateASTConsumer(CompilerInstance &CI,
+                                         StringRef InFile) {
+    return new ModuleMapCheckerConsumer(Checker, CI.getPreprocessor());
   }
 
 private:
diff --git a/clang-tools-extra/pp-trace/PPTrace.cpp b/clang-tools-extra/pp-trace/PPTrace.cpp
index 9dc1bbb..ed955fb 100644
--- a/clang-tools-extra/pp-trace/PPTrace.cpp
+++ b/clang-tools-extra/pp-trace/PPTrace.cpp
@@ -120,10 +120,9 @@
       : Ignore(Ignore), CallbackCalls(CallbackCalls) {}
 
 protected:
-  std::unique_ptr<clang::ASTConsumer>
-  CreateASTConsumer(CompilerInstance &CI, StringRef InFile) override {
-    return llvm::make_unique<PPTraceConsumer>(Ignore, CallbackCalls,
-                                              CI.getPreprocessor());
+  virtual clang::ASTConsumer *CreateASTConsumer(CompilerInstance &CI,
+                                                StringRef InFile) {
+    return new PPTraceConsumer(Ignore, CallbackCalls, CI.getPreprocessor());
   }
 
 private:
diff --git a/clang-tools-extra/unittests/clang-modernize/TransformTest.cpp b/clang-tools-extra/unittests/clang-modernize/TransformTest.cpp
index 6115efd..ae05f5a 100644
--- a/clang-tools-extra/unittests/clang-modernize/TransformTest.cpp
+++ b/clang-tools-extra/unittests/clang-modernize/TransformTest.cpp
@@ -93,8 +93,8 @@
 };
 
 struct ConsumerFactory {
-  std::unique_ptr<ASTConsumer> newASTConsumer() {
-    return llvm::make_unique<TimePassingASTConsumer>(&Called);
+  ASTConsumer *newASTConsumer() {
+    return new TimePassingASTConsumer(&Called);
   }
   bool Called;
 };