From 01c8c100c26973faf5e19bd38a029e58f0dbae8d Mon Sep 17 00:00:00 2001
From: Devang Patel <dpatel@apple.com>
Date: Tue, 13 Jul 2010 16:23:13 +0000
Subject: [PATCH] Add volatile qualifiers for "this".

llvm-svn: 108245
---
 clang/lib/CodeGen/CGDebugInfo.cpp             |  8 +++++++-
 .../CodeGenCXX/member-qual-debug-info.cpp     | 20 +++++++++++++++++++
 2 files changed, 27 insertions(+), 1 deletion(-)
 create mode 100644 clang/test/CodeGenCXX/member-qual-debug-info.cpp

diff --git a/clang/lib/CodeGen/CGDebugInfo.cpp b/clang/lib/CodeGen/CGDebugInfo.cpp
index a3c4003ff5be..4e158955f894 100644
--- a/clang/lib/CodeGen/CGDebugInfo.cpp
+++ b/clang/lib/CodeGen/CGDebugInfo.cpp
@@ -537,11 +537,17 @@ CGDebugInfo::getOrCreateMethodType(const CXXMethodDecl *Method,
   llvm::DIType ThisPtrType = 
     DebugFactory.CreateArtificialType(getOrCreateType(ThisPtr, Unit));
 
-  if (Method->getTypeQualifiers() && Qualifiers::Const)
+  unsigned Quals = Method->getTypeQualifiers();
+  if (Quals & Qualifiers::Const)
     ThisPtrType = 
       DebugFactory.CreateDerivedType(llvm::dwarf::DW_TAG_const_type, 
                                      Unit, "", Unit,
                                      0, 0, 0, 0, 0, ThisPtrType);
+  if (Quals & Qualifiers::Volatile)
+    ThisPtrType = 
+      DebugFactory.CreateDerivedType(llvm::dwarf::DW_TAG_volatile_type, 
+                                     Unit, "", Unit,
+                                     0, 0, 0, 0, 0, ThisPtrType);
 
   TypeCache[ThisPtr.getAsOpaquePtr()] = ThisPtrType;  
   Elts.push_back(ThisPtrType);
diff --git a/clang/test/CodeGenCXX/member-qual-debug-info.cpp b/clang/test/CodeGenCXX/member-qual-debug-info.cpp
new file mode 100644
index 000000000000..c6e0991eeac9
--- /dev/null
+++ b/clang/test/CodeGenCXX/member-qual-debug-info.cpp
@@ -0,0 +1,20 @@
+// RUN: %clang_cc1 -g -S -masm-verbose -x c++ -o %t %s
+// RUN: grep DW_TAG_volatile_type %t | count 3
+// RUN: grep DW_TAG_const_type %t | count 3
+// one for decl, one for def, one for abbrev
+
+namespace A {
+  class B {
+  public:
+    void dump() const volatile;
+  };
+}
+
+int main () {
+  using namespace A;
+  B b;
+  return 0;
+}
+
+void A::B::dump() const volatile{
+}