DebugInfo: Improve IR annotation comments for GNU pubthings.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@191043 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Support/Dwarf.cpp b/lib/Support/Dwarf.cpp
index 3bacdd3..0e64035 100644
--- a/lib/Support/Dwarf.cpp
+++ b/lib/Support/Dwarf.cpp
@@ -12,6 +12,8 @@
 //===----------------------------------------------------------------------===//
 
 #include "llvm/Support/Dwarf.h"
+#include "llvm/Support/ErrorHandling.h"
+
 using namespace llvm;
 using namespace dwarf;
 
@@ -739,3 +741,35 @@
   }
   return 0;
 }
+
+StringRef llvm::dwarf::GDBIndexEntryKindString(GDBIndexEntryKind Kind) {
+  switch (Kind) {
+  case GIEK_NONE:
+    return "NONE";
+  case GIEK_TYPE:
+    return "TYPE";
+  case GIEK_VARIABLE:
+    return "VARIABLE";
+  case GIEK_FUNCTION:
+    return "FUNCTION";
+  case GIEK_OTHER:
+    return "OTHER";
+  case GIEK_UNUSED5:
+    return "UNUSED5";
+  case GIEK_UNUSED6:
+    return "UNUSED6";
+  case GIEK_UNUSED7:
+    return "UNUSED7";
+  }
+  llvm_unreachable("Unknown GDBIndexEntryKind value");
+}
+
+StringRef llvm::dwarf::GDBIndexEntryLinkageString(GDBIndexEntryLinkage Linkage) {
+  switch (Linkage) {
+  case GIEL_EXTERNAL:
+    return "EXTERNAL";
+  case GIEL_STATIC:
+    return "STATIC";
+  }
+  llvm_unreachable("Unknown GDBIndexEntryLinkage value");
+}