[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

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@305075 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 2 insertions, 3 deletions

diff --git a/lib/CodeGen/CodeGenFunction.cpp b/lib/CodeGen/CodeGenFunction.cpp
index b6d7f02550..ac1a1334f1 100644
--- a/lib/CodeGen/CodeGenFunction.cpp
+++ b/lib/CodeGen/CodeGenFunction.cpp
@@ -1083,10 +1083,9 @@ QualType CodeGenFunction::BuildFunctionArgList(GlobalDecl GD,
       if (!Param->hasAttr<PassObjectSizeAttr>())
         continue;
 
-      IdentifierInfo *NoID = nullptr;
       auto *Implicit = ImplicitParamDecl::Create(
-          getContext(), Param->getDeclContext(), Param->getLocation(), NoID,
-          getContext().getSizeType());
+          getContext(), Param->getDeclContext(), Param->getLocation(),
+          /*Id=*/nullptr, getContext().getSizeType(), ImplicitParamDecl::Other);
       SizeArguments[Param] = Implicit;
       Args.push_back(Implicit);
     }