[codeview] Add DIFlags for pointer to member representations

Summary:
This seems like the least intrusive way to pass this information
through.

Fixes PR28151

Reviewers: majnemer, aprantl, dblaikie

Subscribers: llvm-commits

Differential Revision: http://reviews.llvm.org/D21444

llvm-svn: 273053

1 files changed, 11 insertions, 2 deletions

diff --git a/llvm/lib/IR/DebugInfoMetadata.cpp b/llvm/lib/IR/DebugInfoMetadata.cpp
index 4cbe838f87d..ea4ebf088c1 100644
--- a/llvm/lib/IR/DebugInfoMetadata.cpp
+++ b/llvm/lib/IR/DebugInfoMetadata.cpp
@@ -85,8 +85,8 @@ const char *DINode::getFlagString(unsigned Flag) {
 
 unsigned DINode::splitFlags(unsigned Flags,
                             SmallVectorImpl<unsigned> &SplitFlags) {
-  // Accessibility flags need to be specially handled, since they're packed
-  // together.
+  // Accessibility and member pointer flags need to be specially handled, since
+  // they're packed together.
   if (unsigned A = Flags & FlagAccessibility) {
     if (A == FlagPrivate)
       SplitFlags.push_back(FlagPrivate);
@@ -96,6 +96,15 @@ unsigned DINode::splitFlags(unsigned Flags,
       SplitFlags.push_back(FlagPublic);
     Flags &= ~A;
   }
+  if (unsigned R = Flags & FlagPtrToMemberRep) {
+    if (R == FlagSingleInheritance)
+      SplitFlags.push_back(FlagSingleInheritance);
+    else if (R == FlagMultipleInheritance)
+      SplitFlags.push_back(FlagMultipleInheritance);
+    else
+      SplitFlags.push_back(FlagVirtualInheritance);
+    Flags &= ~R;
+  }
 
 #define HANDLE_DI_FLAG(ID, NAME)                                               \
   if (unsigned Bit = Flags & ID) {                                             \