Don't cache the artificial type for the this pointer, there's no

difference in the qual type. This is a workaround for the fact that
the type isn't artificial but the this decl is, however, we don't
have any way of representing it in the current metadata. For now,
however, just don't cache the full type.

Fixes rdar://10831526 and probably a couple of others.

llvm-svn: 150159

1 files changed, 7 insertions, 5 deletions

diff --git a/clang/lib/CodeGen/CGDebugInfo.cpp b/clang/lib/CodeGen/CGDebugInfo.cpp
index 1392091e66e..ab8f5fdbf6d 100644
--- a/clang/lib/CodeGen/CGDebugInfo.cpp
+++ b/clang/lib/CodeGen/CGDebugInfo.cpp
@@ -829,15 +829,17 @@ CGDebugInfo::getOrCreateMethodType(const CXXMethodDecl *Method,
       uint64_t Size = CGM.getContext().getTargetInfo().getPointerWidth(AS);
       uint64_t Align = CGM.getContext().getTypeAlign(ThisPtrTy);
       llvm::DIType PointeeType = getOrCreateType(PointeeTy, Unit);
-      llvm::DIType ThisPtrType =
-        DBuilder.createArtificialType
-        (DBuilder.createPointerType(PointeeType, Size, Align));
+      llvm::DIType ThisPtrType = DBuilder.createPointerType(PointeeType, Size, Align);
       TypeCache[ThisPtr.getAsOpaquePtr()] = ThisPtrType;
+      // TODO: This and the artificial type below are misleading, the
+      // types aren't artificial the argument is, but the current
+      // metadata doesn't represent that.
+      ThisPtrType = DBuilder.createArtificialType(ThisPtrType);
       Elts.push_back(ThisPtrType);
     } else {
-      llvm::DIType ThisPtrType =
-        DBuilder.createArtificialType(getOrCreateType(ThisPtr, Unit));
+      llvm::DIType ThisPtrType = getOrCreateType(ThisPtr, Unit);
       TypeCache[ThisPtr.getAsOpaquePtr()] = ThisPtrType;
+      ThisPtrType = DBuilder.createArtificialType(ThisPtrType);
       Elts.push_back(ThisPtrType);
     }
   }