Add IDs and clone methods to NativeRawSymbol

All NativeRawSymbols will have a unique symbol ID (retrievable via
getSymIndexId).  For now, these are initialized to 0, but soon the
NativeSession will be responsible for creating the raw symbols, and it will
assign unique IDs.

The symbol cache in the NativeSession will also require the ability to clone
raw symbols, so I've provided implementations for that as well.

llvm-svn: 306042

3 files changed, 12 insertions, 3 deletions

diff --git a/llvm/include/llvm/DebugInfo/PDB/Native/NativeCompilandSymbol.h b/llvm/include/llvm/DebugInfo/PDB/Native/NativeCompilandSymbol.h
index 22ed61910d9..1687737f0e7 100644
--- a/llvm/include/llvm/DebugInfo/PDB/Native/NativeCompilandSymbol.h
+++ b/llvm/include/llvm/DebugInfo/PDB/Native/NativeCompilandSymbol.h
@@ -18,7 +18,11 @@ namespace pdb {
 
 class NativeCompilandSymbol : public NativeRawSymbol {
 public:
-  NativeCompilandSymbol(NativeSession &Session, DbiModuleDescriptor MI);
+  NativeCompilandSymbol(NativeSession &Session, uint32_t SymbolId,
+                        DbiModuleDescriptor MI);
+
+  std::unique_ptr<NativeRawSymbol> clone() const override;
+
   PDB_SymType getSymTag() const override;
   bool isEditAndContinueEnabled() const override;
   uint32_t getLexicalParentId() const override;
diff --git a/llvm/include/llvm/DebugInfo/PDB/Native/NativeExeSymbol.h b/llvm/include/llvm/DebugInfo/PDB/Native/NativeExeSymbol.h
index 9516810539b..15bac78df19 100644
--- a/llvm/include/llvm/DebugInfo/PDB/Native/NativeExeSymbol.h
+++ b/llvm/include/llvm/DebugInfo/PDB/Native/NativeExeSymbol.h
@@ -18,7 +18,9 @@ namespace pdb {
 
 class NativeExeSymbol : public NativeRawSymbol {
 public:
-  NativeExeSymbol(NativeSession &Session);
+  NativeExeSymbol(NativeSession &Session, uint32_t SymbolId);
+
+  std::unique_ptr<NativeRawSymbol> clone() const override;
 
   std::unique_ptr<IPDBEnumSymbols>
   findChildren(PDB_SymType Type) const override;
diff --git a/llvm/include/llvm/DebugInfo/PDB/Native/NativeRawSymbol.h b/llvm/include/llvm/DebugInfo/PDB/Native/NativeRawSymbol.h
index e1e78035ff3..5e4aaafff1a 100644
--- a/llvm/include/llvm/DebugInfo/PDB/Native/NativeRawSymbol.h
+++ b/llvm/include/llvm/DebugInfo/PDB/Native/NativeRawSymbol.h
@@ -19,7 +19,9 @@ class NativeSession;
 
 class NativeRawSymbol : public IPDBRawSymbol {
 public:
-  explicit NativeRawSymbol(NativeSession &PDBSession);
+  NativeRawSymbol(NativeSession &PDBSession, uint32_t SymbolId);
+
+  virtual std::unique_ptr<NativeRawSymbol> clone() const = 0;
 
   void dump(raw_ostream &OS, int Indent) const override;
 
@@ -201,6 +203,7 @@ public:
 
 protected:
   NativeSession &Session;
+  uint32_t SymbolId;
 };
 
 }