[MC] Thread unique_ptr<MCObjectWriter> through the create.*ObjectWriter

functions.

This makes the ownership of the resulting MCObjectWriter clear, and allows us
to remove one instance of MCObjectStreamer's bizarre "holding ownership via
someone else's reference" trick.

llvm-svn: 315327

1 files changed, 3 insertions, 3 deletions

diff --git a/llvm/lib/Target/ARM/MCTargetDesc/ARMMachObjectWriter.cpp b/llvm/lib/Target/ARM/MCTargetDesc/ARMMachObjectWriter.cpp
index d375b640c94..521ae5337e7 100644
--- a/llvm/lib/Target/ARM/MCTargetDesc/ARMMachObjectWriter.cpp
+++ b/llvm/lib/Target/ARM/MCTargetDesc/ARMMachObjectWriter.cpp
@@ -484,9 +484,9 @@ void ARMMachObjectWriter::recordRelocation(MachObjectWriter *Writer,
   Writer->addRelocation(RelSymbol, Fragment->getParent(), MRE);
 }
 
-MCObjectWriter *llvm::createARMMachObjectWriter(raw_pwrite_stream &OS,
-                                                bool Is64Bit, uint32_t CPUType,
-                                                uint32_t CPUSubtype) {
+std::unique_ptr<MCObjectWriter>
+llvm::createARMMachObjectWriter(raw_pwrite_stream &OS, bool Is64Bit,
+                                uint32_t CPUType, uint32_t CPUSubtype) {
   return createMachObjectWriter(
       llvm::make_unique<ARMMachObjectWriter>(Is64Bit, CPUType, CPUSubtype), OS,
       /*IsLittleEndian=*/true);