Revert r283690, "MC: Remove unused entities."

llvm-svn: 283814

4 files changed, 32 insertions, 1 deletions

diff --git a/llvm/lib/MC/CMakeLists.txt b/llvm/lib/MC/CMakeLists.txt
index c207aac0cf2..2f1b39e58e3 100644
--- a/llvm/lib/MC/CMakeLists.txt
+++ b/llvm/lib/MC/CMakeLists.txt
@@ -41,6 +41,7 @@ add_llvm_library(LLVMMC
   MCTargetOptions.cpp
   MCValue.cpp
   MCWin64EH.cpp
+  MCWinEH.cpp
   MachObjectWriter.cpp
   StringTableBuilder.cpp
   SubtargetFeature.cpp
diff --git a/llvm/lib/MC/MCAsmStreamer.cpp b/llvm/lib/MC/MCAsmStreamer.cpp
index a8c37e0f272..7b1c59f1c04 100644
--- a/llvm/lib/MC/MCAsmStreamer.cpp
+++ b/llvm/lib/MC/MCAsmStreamer.cpp
@@ -117,7 +117,7 @@ public:
   void emitRawComment(const Twine &T, bool TabPrefix = true) override;
 
   void addExplicitComment(const Twine &T) override;
-  void emitExplicitComments();
+  void emitExplicitComments() override;
 
   /// AddBlankLine - Emit a blank line to a .s file to pretty it up.
   void AddBlankLine() override {
diff --git a/llvm/lib/MC/MCStreamer.cpp b/llvm/lib/MC/MCStreamer.cpp
index 11c548a9728..124a1911a9a 100644
--- a/llvm/lib/MC/MCStreamer.cpp
+++ b/llvm/lib/MC/MCStreamer.cpp
@@ -72,6 +72,7 @@ raw_ostream &MCStreamer::GetCommentOS() {
 void MCStreamer::emitRawComment(const Twine &T, bool TabPrefix) {}
 
 void MCStreamer::addExplicitComment(const Twine &T) {}
+void MCStreamer::emitExplicitComments() {}
 
 void MCStreamer::generateCompactUnwindEncodings(MCAsmBackend *MAB) {
   for (auto &FI : DwarfFrameInfos)
@@ -712,6 +713,9 @@ void MCStreamer::EmitRawText(const Twine &T) {
   EmitRawTextImpl(T.toStringRef(Str));
 }
 
+void MCStreamer::EmitWindowsUnwindTables() {
+}
+
 void MCStreamer::Finish() {
   if (!DwarfFrameInfos.empty() && !DwarfFrameInfos.back().End)
     report_fatal_error("Unfinished frame!");
diff --git a/llvm/lib/MC/MCWinEH.cpp b/llvm/lib/MC/MCWinEH.cpp
new file mode 100644
index 00000000000..21a913999f6
--- /dev/null
+++ b/llvm/lib/MC/MCWinEH.cpp
@@ -0,0 +1,26 @@
+//===- lib/MC/MCWinEH.cpp - Windows EH implementation ---------------------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+#include "llvm/ADT/StringRef.h"
+#include "llvm/MC/MCContext.h"
+#include "llvm/MC/MCObjectFileInfo.h"
+#include "llvm/MC/MCSectionCOFF.h"
+#include "llvm/MC/MCStreamer.h"
+#include "llvm/MC/MCSymbol.h"
+#include "llvm/MC/MCWinEH.h"
+#include "llvm/Support/COFF.h"
+
+namespace llvm {
+namespace WinEH {
+
+UnwindEmitter::~UnwindEmitter() {}
+
+}
+}
+