Enable llvm-pdbutil to list enumerations using native PDB reader

This extends the native reader to enable llvm-pdbutil to list the enums in a
PDB and it includes a simple test. It does not yet list the values in the
enumerations, which requires an actual implementation of
NativeEnumSymbol::FindChildren.

To exercise this code, use a command like:

    llvm-pdbutil pretty -native -enums foo.pdb

Differential Revision: https://reviews.llvm.org/D35738

llvm-svn: 310144

1 files changed, 4 insertions, 0 deletions

diff --git a/llvm/lib/DebugInfo/PDB/Native/NativeExeSymbol.cpp b/llvm/lib/DebugInfo/PDB/Native/NativeExeSymbol.cpp
index 3241000b06d..b29d589eaa9 100644
--- a/llvm/lib/DebugInfo/PDB/Native/NativeExeSymbol.cpp
+++ b/llvm/lib/DebugInfo/PDB/Native/NativeExeSymbol.cpp
@@ -13,7 +13,9 @@
 #include "llvm/DebugInfo/PDB/Native/DbiStream.h"
 #include "llvm/DebugInfo/PDB/Native/InfoStream.h"
 #include "llvm/DebugInfo/PDB/Native/NativeEnumModules.h"
+#include "llvm/DebugInfo/PDB/Native/NativeEnumTypes.h"
 #include "llvm/DebugInfo/PDB/Native/PDBFile.h"
+#include "llvm/DebugInfo/PDB/Native/TpiStream.h"
 
 namespace llvm {
 namespace pdb {
@@ -38,6 +40,8 @@ NativeExeSymbol::findChildren(PDB_SymType Type) const {
     consumeError(Dbi.takeError());
     break;
   }
+  case PDB_SymType::Enum:
+    return Session.createTypeEnumerator(codeview::LF_ENUM);
   default:
     break;
   }