From 2d0a3c7b8c31d522e8c1456bd005bd3ecf57b84b Mon Sep 17 00:00:00 2001
From: Dan Gohman <gohman@apple.com>
Date: Fri, 15 Oct 2010 20:24:53 +0000
Subject: Add a comment.

llvm-svn: 116615
---
 clang/lib/CodeGen/CodeGenTBAA.cpp | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

(limited to 'clang/lib/CodeGen/CodeGenTBAA.cpp')

diff --git a/clang/lib/CodeGen/CodeGenTBAA.cpp b/clang/lib/CodeGen/CodeGenTBAA.cpp
index 5aea0f21ae5..a1f38be1229 100644
--- a/clang/lib/CodeGen/CodeGenTBAA.cpp
+++ b/clang/lib/CodeGen/CodeGenTBAA.cpp
@@ -76,7 +76,9 @@ CodeGenTBAA::getTBAAInfo(QualType QTy) {
     case BuiltinType::UInt128:
       return getTBAAInfo(Context.Int128Ty);
 
-    // Other builtin types.
+    // Treat all other builtin types as distinct types. This includes
+    // treating wchar_t, char16_t, and char32_t as distinct from their
+    // "underlying types".
     default:
       return MetadataCache[Ty] =
                getTBAAInfoForNamedType(BTy->getName(Features), Char);
-- 
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