[pdbutil] Add a command to dump the FPM.

Recently problems have been discovered in the way we write the FPM
(free page map).  In order to fix this, we first need to establish
a baseline about what a correct FPM looks like using an MSVC
generated PDB, so that we can then make our own generated PDBs
match.  And in order to do this, the dumper needs a mode where it
can dump an FPM so that we can write tests for it.

This patch adds a command to dump the FPM, as well as a test against
a known-good PDB.

llvm-svn: 309894

1 files changed, 1 insertions, 0 deletions

diff --git a/llvm/tools/llvm-pdbutil/BytesOutputStyle.h b/llvm/tools/llvm-pdbutil/BytesOutputStyle.h
index c162163fdd0..876178d56ab 100644
--- a/llvm/tools/llvm-pdbutil/BytesOutputStyle.h
+++ b/llvm/tools/llvm-pdbutil/BytesOutputStyle.h
@@ -35,6 +35,7 @@ private:
   void dumpNameMap();
   void dumpBlockRanges(uint32_t Min, uint32_t Max);
   void dumpByteRanges(uint32_t Min, uint32_t Max);
+  void dumpFpm();
   void dumpStreamBytes();
 
   void dumpSectionContributions();