Change setDiagnosticsOutputFile to take a unique_ptr from a raw pointer (NFC)

Summary:
This makes it explicit that ownership is taken. Also replace all `new`
with make_unique<> at call sites.

Reviewers: anemet

Subscribers: llvm-commits

Differential Revision: https://reviews.llvm.org/D26884

llvm-svn: 287449

include/llvm/IR/LLVMContext.h

@@ -194,7 +194,7 @@ public:
   /// By default or if invoked with null, diagnostics are not saved in a file
   /// but only emitted via the diagnostic handler.  Even if an output file is
   /// set, the handler is invoked for each diagnostic message.
-  void setDiagnosticsOutputFile(yaml::Output *F);
+  void setDiagnosticsOutputFile(std::unique_ptr<yaml::Output> F);
 
   /// \brief Get the prefix that should be printed in front of a diagnostic of
   ///        the given \p Severity

lib/IR/LLVMContext.cpp

@@ -212,8 +212,8 @@ yaml::Output *LLVMContext::getDiagnosticsOutputFile() {
   return pImpl->DiagnosticsOutputFile.get();
 }
 
-void LLVMContext::setDiagnosticsOutputFile(yaml::Output *F) {
-  pImpl->DiagnosticsOutputFile.reset(F);
+void LLVMContext::setDiagnosticsOutputFile(std::unique_ptr<yaml::Output> F) {
+  pImpl->DiagnosticsOutputFile = std::move(F);
 }
 
 LLVMContext::DiagnosticHandlerTy LLVMContext::getDiagnosticHandler() const {

lib/LTO/LTOCodeGenerator.cpp

@@ -511,7 +511,7 @@ bool LTOCodeGenerator::setupOptimizationRemarks() {
       return false;
     }
     Context.setDiagnosticsOutputFile(
-        new yaml::Output(DiagnosticOutputFile->os()));
+        llvm::make_unique<yaml::Output>(DiagnosticOutputFile->os()));
   }
   return true;
 }

tools/opt/opt.cpp

@@ -424,7 +424,8 @@ int main(int argc, char **argv) {
       errs() << EC.message() << '\n';
       return 1;
     }
-    Context.setDiagnosticsOutputFile(new yaml::Output(YamlFile->os()));
+    Context.setDiagnosticsOutputFile(
+        llvm::make_unique<yaml::Output>(YamlFile->os()));
   }
 
   // Load the input module...