[DebugInfo] Add kind of ImplicitParamDecl for emission of FlagObjectPointer.

Summary:
If the first parameter of the function is the ImplicitParamDecl, codegen
automatically marks it as an implicit argument with `this` or `self`
pointer. Added internal kind of the ImplicitParamDecl to separate
'this', 'self', 'vtt' and other implicit parameters from other kind of
parameters.

Reviewers: rjmccall, aaron.ballman

Subscribers: cfe-commits

Differential Revision: https://reviews.llvm.org/D33735

llvm-svn: 305075

1 files changed, 3 insertions, 3 deletions

diff --git a/clang/lib/CodeGen/ItaniumCXXABI.cpp b/clang/lib/CodeGen/ItaniumCXXABI.cpp
index 62b0e6155f9..39efb9f4392 100644
--- a/clang/lib/CodeGen/ItaniumCXXABI.cpp
+++ b/clang/lib/CodeGen/ItaniumCXXABI.cpp
@@ -1408,9 +1408,9 @@ void ItaniumCXXABI::addImplicitStructorParams(CodeGenFunction &CGF,
 
     // FIXME: avoid the fake decl
     QualType T = Context.getPointerType(Context.VoidPtrTy);
-    ImplicitParamDecl *VTTDecl
-      = ImplicitParamDecl::Create(Context, nullptr, MD->getLocation(),
-                                  &Context.Idents.get("vtt"), T);
+    auto *VTTDecl = ImplicitParamDecl::Create(
+        Context, /*DC=*/nullptr, MD->getLocation(), &Context.Idents.get("vtt"),
+        T, ImplicitParamDecl::CXXVTT);
     Params.insert(Params.begin() + 1, VTTDecl);
     getStructorImplicitParamDecl(CGF) = VTTDecl;
   }