MC: Change the streamer ctors to take an object writer instead of a stream. NFCI.

The idea is that a client that wants split dwarf would create a
specific kind of object writer that creates two files, and use it to
create the streamer.

Part of PR37466.

Differential Revision: https://reviews.llvm.org/D47050

llvm-svn: 332749

3 files changed, 15 insertions, 10 deletions

diff --git a/llvm/lib/Target/AVR/MCTargetDesc/AVRMCELFStreamer.cpp b/llvm/lib/Target/AVR/MCTargetDesc/AVRMCELFStreamer.cpp
index c60ea7a92e6..861acd47347 100644
--- a/llvm/lib/Target/AVR/MCTargetDesc/AVRMCELFStreamer.cpp
+++ b/llvm/lib/Target/AVR/MCTargetDesc/AVRMCELFStreamer.cpp
@@ -17,6 +17,7 @@
 #include "llvm/MC/MCContext.h"
 #include "llvm/MC/MCExpr.h"
 #include "llvm/MC/MCSymbol.h"
+#include "llvm/MC/MCObjectWriter.h"
 
 using namespace llvm;
 
@@ -43,9 +44,10 @@ void AVRMCELFStreamer::EmitValueForModiferKind(
 namespace llvm {
 MCStreamer *createAVRELFStreamer(Triple const &TT, MCContext &Context,
                                  std::unique_ptr<MCAsmBackend> MAB,
-                                 raw_pwrite_stream &OS,
+                                 std::unique_ptr<MCObjectWriter> OW,
                                  std::unique_ptr<MCCodeEmitter> CE) {
-  return new AVRMCELFStreamer(Context, std::move(MAB), OS, std::move(CE));
+  return new AVRMCELFStreamer(Context, std::move(MAB), std::move(OW),
+                              std::move(CE));
 }
 
 } // end namespace llvm
diff --git a/llvm/lib/Target/AVR/MCTargetDesc/AVRMCELFStreamer.h b/llvm/lib/Target/AVR/MCTargetDesc/AVRMCELFStreamer.h
index 398b409f458..12e805fc7d1 100644
--- a/llvm/lib/Target/AVR/MCTargetDesc/AVRMCELFStreamer.h
+++ b/llvm/lib/Target/AVR/MCTargetDesc/AVRMCELFStreamer.h
@@ -16,6 +16,7 @@
 #include "llvm/MC/MCCodeEmitter.h"
 #include "llvm/MC/MCELFStreamer.h"
 #include "llvm/MC/MCInstrInfo.h"
+#include "llvm/MC/MCObjectWriter.h"
 
 namespace llvm {
 
@@ -27,16 +28,18 @@ class AVRMCELFStreamer : public MCELFStreamer {
 
 public:
   AVRMCELFStreamer(MCContext &Context, std::unique_ptr<MCAsmBackend> TAB,
-                   raw_pwrite_stream &OS,
+                   std::unique_ptr<MCObjectWriter> OW,
                    std::unique_ptr<MCCodeEmitter> Emitter)
-      : MCELFStreamer(Context, std::move(TAB), OS, std::move(Emitter)),
+      : MCELFStreamer(Context, std::move(TAB), std::move(OW),
+                      std::move(Emitter)),
         MCII(createAVRMCInstrInfo()) {}
 
   AVRMCELFStreamer(MCContext &Context, std::unique_ptr<MCAsmBackend> TAB,
-                   raw_pwrite_stream &OS,
+                   std::unique_ptr<MCObjectWriter> OW,
                    std::unique_ptr<MCCodeEmitter> Emitter,
                    MCAssembler *Assembler)
-      : MCELFStreamer(Context, std::move(TAB), OS, std::move(Emitter)),
+      : MCELFStreamer(Context, std::move(TAB), std::move(OW),
+                      std::move(Emitter)),
         MCII(createAVRMCInstrInfo()) {}
 
   void EmitValueForModiferKind(
@@ -46,7 +49,7 @@ public:
 
 MCStreamer *createAVRELFStreamer(Triple const &TT, MCContext &Context,
                                  std::unique_ptr<MCAsmBackend> MAB,
-                                 raw_pwrite_stream &OS,
+                                 std::unique_ptr<MCObjectWriter> OW,
                                  std::unique_ptr<MCCodeEmitter> CE);
 
 } // end namespace llvm
diff --git a/llvm/lib/Target/AVR/MCTargetDesc/AVRMCTargetDesc.cpp b/llvm/lib/Target/AVR/MCTargetDesc/AVRMCTargetDesc.cpp
index dd65a431207..8c39b5f4039 100644
--- a/llvm/lib/Target/AVR/MCTargetDesc/AVRMCTargetDesc.cpp
+++ b/llvm/lib/Target/AVR/MCTargetDesc/AVRMCTargetDesc.cpp
@@ -70,11 +70,11 @@ static MCInstPrinter *createAVRMCInstPrinter(const Triple &T,
 
 static MCStreamer *createMCStreamer(const Triple &T, MCContext &Context,
                                     std::unique_ptr<MCAsmBackend> &&MAB,
-                                    raw_pwrite_stream &OS,
+                                    std::unique_ptr<MCObjectWriter> &&OW,
                                     std::unique_ptr<MCCodeEmitter> &&Emitter,
                                     bool RelaxAll) {
-  return createELFStreamer(Context, std::move(MAB), OS,
-      std::move(Emitter), RelaxAll);
+  return createELFStreamer(Context, std::move(MAB), std::move(OW),
+                           std::move(Emitter), RelaxAll);
 }
 
 static MCTargetStreamer *