From f8a2e01fc7b1c08f14c08a0562e501f5043ac699 Mon Sep 17 00:00:00 2001
From: Devang Patel <dpatel@apple.com>
Date: Thu, 15 Apr 2010 00:02:49 +0000
Subject: [PATCH] Add comment.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@101317 91177308-0d34-0410-b5e6-96231b3b80d8
---
 lib/CodeGen/AsmPrinter/DwarfDebug.h | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/lib/CodeGen/AsmPrinter/DwarfDebug.h b/lib/CodeGen/AsmPrinter/DwarfDebug.h
index 0de20c76e11..b42232b5d13 100644
--- a/lib/CodeGen/AsmPrinter/DwarfDebug.h
+++ b/lib/CodeGen/AsmPrinter/DwarfDebug.h
@@ -173,6 +173,9 @@ class DwarfDebug {
   /// (at the end of the module) as DW_AT_inline.
   SmallPtrSet<DIE *, 4> InlinedSubprogramDIEs;
 
+  /// ContainingTypeMap - This map is used to keep track of subprogram DIEs that
+  /// need DW_AT_containing_type attribute. This attribute points to a DIE that
+  /// corresponds to the MDNode mapped with the subprogram DIE.
   DenseMap<DIE *, MDNode *> ContainingTypeMap;
 
   typedef SmallVector<DbgScope *, 2> ScopeVector;