Added LLVM Asm/Bitcode Reader/Writer support for new IR keyword externally_initialized.

llvm-svn: 174340
diff --git a/llvm/lib/IR/AsmWriter.cpp b/llvm/lib/IR/AsmWriter.cpp
index ff43128..11e06c9 100644
--- a/llvm/lib/IR/AsmWriter.cpp
+++ b/llvm/lib/IR/AsmWriter.cpp
@@ -1443,6 +1443,7 @@
   if (unsigned AddressSpace = GV->getType()->getAddressSpace())
     Out << "addrspace(" << AddressSpace << ") ";
   if (GV->hasUnnamedAddr()) Out << "unnamed_addr ";
+  if (GV->isExternallyInitialized()) Out << "externally_initialized ";
   Out << (GV->isConstant() ? "constant " : "global ");
   TypePrinter.print(GV->getType()->getElementType(), Out);