[MC] Have MCObjectStreamer take its MCAsmBackend argument via unique_ptr.

MCObjectStreamer owns its MCCodeEmitter -- this fixes the types to reflect that,
and allows us to remove the last instance of MCObjectStreamer's weird "holding
ownership via someone else's reference" trick.

llvm-svn: 315531

1 files changed, 4 insertions, 2 deletions

diff --git a/llvm/lib/MC/MCWinCOFFStreamer.cpp b/llvm/lib/MC/MCWinCOFFStreamer.cpp
index c78a2e17c8d..7e0533b8e00 100644
--- a/llvm/lib/MC/MCWinCOFFStreamer.cpp
+++ b/llvm/lib/MC/MCWinCOFFStreamer.cpp
@@ -43,8 +43,10 @@ using namespace llvm;
 
 MCWinCOFFStreamer::MCWinCOFFStreamer(MCContext &Context,
                                      std::unique_ptr<MCAsmBackend> MAB,
-                                     MCCodeEmitter &CE, raw_pwrite_stream &OS)
-    : MCObjectStreamer(Context, std::move(MAB), OS, &CE), CurSymbol(nullptr) {}
+                                     std::unique_ptr<MCCodeEmitter> CE,
+                                     raw_pwrite_stream &OS)
+    : MCObjectStreamer(Context, std::move(MAB), OS, std::move(CE)),
+      CurSymbol(nullptr) {}
 
 void MCWinCOFFStreamer::EmitInstToData(const MCInst &Inst,
                                        const MCSubtargetInfo &STI) {