[DebugInfo] Added support for Checksum debug info feature.

Differential Revision: https://reviews.llvm.org/D27642

llvm-svn: 290514
diff --git a/llvm/lib/Bitcode/Writer/BitcodeWriter.cpp b/llvm/lib/Bitcode/Writer/BitcodeWriter.cpp
index d2abf7c..9d2bea8 100644
--- a/llvm/lib/Bitcode/Writer/BitcodeWriter.cpp
+++ b/llvm/lib/Bitcode/Writer/BitcodeWriter.cpp
@@ -1515,6 +1515,8 @@
   Record.push_back(N->isDistinct());
   Record.push_back(VE.getMetadataOrNullID(N->getRawFilename()));
   Record.push_back(VE.getMetadataOrNullID(N->getRawDirectory()));
+  Record.push_back(N->getChecksumKind());
+  Record.push_back(VE.getMetadataOrNullID(N->getRawChecksum()));
 
   Stream.EmitRecord(bitc::METADATA_FILE, Record, Abbrev);
   Record.clear();