DebugInfo: Remove DIType

[oota-llvm.git] / include / llvm / Linker / Linker.h

diff --git a/include/llvm/Linker/Linker.h b/include/llvm/Linker/Linker.h
index 88d41c1b0a0b192e4847af7138c89f86192b202b..5ca815c325a087347bf466f06dec71bf603de03c 100644 (file)
--- a/include/llvm/Linker/Linker.h
+++ b/include/llvm/Linker/Linker.h
@@ -10,14 +10,15 @@
 #ifndef LLVM_LINKER_LINKER_H
 #define LLVM_LINKER_LINKER_H
 
-#include "llvm/ADT/SmallPtrSet.h"
-
-#include <functional>
+#include "llvm/ADT/ArrayRef.h"
+#include "llvm/ADT/DenseMap.h"
+#include "llvm/ADT/DenseSet.h"
+#include "llvm/IR/DiagnosticInfo.h"
 
 namespace llvm {
-class DiagnosticInfo;
 class Module;
 class StructType;
+class Type;
 
 /// This class provides the core functionality of linking in LLVM. It keeps a
 /// pointer to the merged module so far. It doesn't take ownership of the
@@ -25,7 +26,39 @@ class StructType;
 /// something with it after the linking.
 class Linker {
 public:
-  typedef std::function<void(const DiagnosticInfo &)> DiagnosticHandlerFunction;
+  struct StructTypeKeyInfo {
+    struct KeyTy {
+      ArrayRef<Type *> ETypes;
+      bool IsPacked;
+      KeyTy(ArrayRef<Type *> E, bool P);
+      KeyTy(const StructType *ST);
+      bool operator==(const KeyTy &that) const;
+      bool operator!=(const KeyTy &that) const;
+    };
+    static StructType *getEmptyKey();
+    static StructType *getTombstoneKey();
+    static unsigned getHashValue(const KeyTy &Key);
+    static unsigned getHashValue(const StructType *ST);
+    static bool isEqual(const KeyTy &LHS, const StructType *RHS);
+    static bool isEqual(const StructType *LHS, const StructType *RHS);
+  };
+
+  typedef DenseSet<StructType *, StructTypeKeyInfo> NonOpaqueStructTypeSet;
+  typedef DenseSet<StructType *> OpaqueStructTypeSet;
+
+  struct IdentifiedStructTypeSet {
+    // The set of opaque types is the composite module.
+    OpaqueStructTypeSet OpaqueStructTypes;
+
+    // The set of identified but non opaque structures in the composite module.
+    NonOpaqueStructTypeSet NonOpaqueStructTypes;
+
+    void addNonOpaque(StructType *Ty);
+    void switchToNonOpaque(StructType *Ty);
+    void addOpaque(StructType *Ty);
+    StructType *findNonOpaque(ArrayRef<Type *> ETypes, bool IsPacked);
+    bool hasType(StructType *Ty);
+  };
 
   Linker(Module *M, DiagnosticHandlerFunction DiagnosticHandler);
   Linker(Module *M);
@@ -38,6 +71,9 @@ public:
   /// Returns true on error.
   bool linkInModule(Module *Src);
 
+  /// \brief Set the composite to the passed-in module.
+  void setModule(Module *Dst);
+
   static bool LinkModules(Module *Dest, Module *Src,
                           DiagnosticHandlerFunction DiagnosticHandler);
 
@@ -46,7 +82,9 @@ public:
 private:
   void init(Module *M, DiagnosticHandlerFunction DiagnosticHandler);
   Module *Composite;
-  SmallPtrSet<StructType *, 32> IdentifiedStructTypes;
+
+  IdentifiedStructTypeSet IdentifiedStructTypes;
+
   DiagnosticHandlerFunction DiagnosticHandler;
 };