[llvm-pdbutil] Support dumping CodeView from object files.

We have llvm-readobj for dumping CodeView from object files, and
llvm-pdbutil has always been more focused on PDB.  However,
llvm-pdbutil has a lot of useful options for summarizing debug
information in aggregate and presenting high level statistical
views.  Furthermore, it's arguably better as a testing tool since
we don't have to write tests to conform to a state-machine like
structure where you match multiple lines in succession, each
depending on a previous match.  llvm-pdbutil dumps much more
concisely, so it's possible to use single-line matches in many
cases where as with readobj tests you have to use multi-line
matches with an implicit state machine.

Because of this, I'm adding object file support to llvm-pdbutil.
In fact, this mirrors the cvdump tool from Microsoft, which also
supports both object files and pdb files.  In the future we could
perhaps rename this tool llvm-cvutil.

In the meantime, this allows us to deep dive into object files
the same way we already can with PDB files.

llvm-svn: 312358

1 files changed, 11 insertions, 6 deletions

diff --git a/llvm/tools/llvm-pdbutil/DumpOutputStyle.h b/llvm/tools/llvm-pdbutil/DumpOutputStyle.h
index 7dd717c3788..85598307863 100644
--- a/llvm/tools/llvm-pdbutil/DumpOutputStyle.h
+++ b/llvm/tools/llvm-pdbutil/DumpOutputStyle.h
@@ -28,8 +28,13 @@ namespace codeview {
 class LazyRandomTypeCollection;
 }
 
+namespace object {
+class COFFObjectFile;
+}
+
 namespace pdb {
 class GSIHashTable;
+class InputFile;
 
 struct StatCollection {
   struct Stat {
@@ -57,12 +62,13 @@ struct StatCollection {
 class DumpOutputStyle : public OutputStyle {
 
 public:
-  DumpOutputStyle(PDBFile &File);
+  DumpOutputStyle(InputFile &File);
 
   Error dump() override;
 
 private:
-  Expected<codeview::LazyRandomTypeCollection &> initializeTypes(uint32_t SN);
+  PDBFile &getPdb();
+  object::COFFObjectFile &getObj();
 
   Error dumpFileSummary();
   Error dumpStreamSummary();
@@ -76,7 +82,8 @@ private:
   Error dumpTpiStream(uint32_t StreamIdx);
   Error dumpModules();
   Error dumpModuleFiles();
-  Error dumpModuleSyms();
+  Error dumpModuleSymsForPdb();
+  Error dumpModuleSymsForObj();
   Error dumpGlobals();
   Error dumpPublics();
   Error dumpSymbolsFromGSI(const GSIHashTable &Table, bool HashExtras);
@@ -86,10 +93,8 @@ private:
 
   void dumpSectionHeaders(StringRef Label, DbgHeaderType Type);
 
-  PDBFile &File;
+  InputFile &File;
   LinePrinter P;
-  std::unique_ptr<codeview::LazyRandomTypeCollection> TpiTypes;
-  std::unique_ptr<codeview::LazyRandomTypeCollection> IpiTypes;
   SmallVector<StreamInfo, 32> StreamPurposes;
 };
 } // namespace pdb