LLVM: Add ELF Note section to NaCl object files identifying them as such to gold

tools/llvm-mc/llvm-mc.cpp

Index: tools/llvm-mc/llvm-mc.cpp
diff --git a/tools/llvm-mc/llvm-mc.cpp b/tools/llvm-mc/llvm-mc.cpp
index 243899bb881c59f29b9669941cb17fb80f91330a..11304454f0c08fd070e3fb1bc5a3fa3b014a04ec 100644
--- a/tools/llvm-mc/llvm-mc.cpp
+++ b/tools/llvm-mc/llvm-mc.cpp
@@ -20,6 +20,7 @@
 #include "llvm/MC/MCContext.h"
 #include "llvm/MC/MCInstPrinter.h"
 #include "llvm/MC/MCInstrInfo.h"
+#include "llvm/MC/MCNaCl.h"
 #include "llvm/MC/MCObjectFileInfo.h"
 #include "llvm/MC/MCParser/AsmLexer.h"
 #include "llvm/MC/MCRegisterInfo.h"
@@ -453,6 +454,11 @@ int main(int argc, char **argv) {
     Str.reset(TheTarget->createMCObjectStreamer(TripleName, Ctx, *MAB,
                                                 FOS, CE, RelaxAll,
                                                 NoExecStack));
+    // @LOCALMOD-BEGIN
+    Triple T(TripleName);
+    if (T.isOSNaCl())
+      initializeNaClMCStreamer(*Str.get(), Ctx, T);
+    // @LOCALMOD-END
   }
 
   int Res = 1;