PR14759: Debug info support for C++ member pointers.

This works fine with GDB for member variable pointers, but GDB's support for
member function pointers seems to be quite unrelated to
DW_TAG_ptr_to_member_type. (see GDB bug 14998 for details)

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@171698 91177308-0d34-0410-b5e6-96231b3b80d8

2 files changed, 10 insertions, 0 deletions

diff --git a/include/llvm/DIBuilder.h b/include/llvm/DIBuilder.h
index f6bc7b1..0a59cdd 100644
--- a/include/llvm/DIBuilder.h
+++ b/include/llvm/DIBuilder.h
@@ -126,6 +126,11 @@ namespace llvm {
                              uint64_t AlignInBits = 0, 
                              StringRef Name = StringRef());
 
+    /// \brief Create debugging information entry for a pointer to member.
+    /// @param PointeeTy Type pointed to by this pointer.
+    /// @param Class Type for which this pointer points to members of.
+    DIType createMemberPointerType(DIType PointeeTy, DIType Class);
+
     /// createReferenceType - Create debugging information entry for a c++
     /// style reference or rvalue reference type.
     DIType createReferenceType(unsigned Tag, DIType RTy);
diff --git a/include/llvm/DebugInfo.h b/include/llvm/DebugInfo.h
index 5bfbc63..3b17dc1 100644
--- a/include/llvm/DebugInfo.h
+++ b/include/llvm/DebugInfo.h
@@ -354,6 +354,11 @@ namespace llvm {
     /// associated with one.
     MDNode *getObjCProperty() const;
 
+    DIType getClassType() const {
+      assert(getTag() == dwarf::DW_TAG_ptr_to_member_type);
+      return getFieldAs<DIType>(10);
+    }
+
     StringRef getObjCPropertyName() const {
       if (getVersion() > LLVMDebugVersion11)
         return StringRef();