From ce6eb1710697c8011b1eb0b56008160301b9253c Mon Sep 17 00:00:00 2001
From: Devang Patel <dpatel@apple.com>
Date: Thu, 22 Apr 2010 20:56:35 +0000
Subject: [PATCH] Add comment.

llvm-svn: 102129
---
 lib/CodeGen/AsmPrinter/DwarfDebug.h | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/lib/CodeGen/AsmPrinter/DwarfDebug.h b/lib/CodeGen/AsmPrinter/DwarfDebug.h
index b3f97458081..16d41370535 100644
--- a/lib/CodeGen/AsmPrinter/DwarfDebug.h
+++ b/lib/CodeGen/AsmPrinter/DwarfDebug.h
@@ -197,6 +197,11 @@ class DwarfDebug {
   DenseMap<const MachineInstr *, MCSymbol *> LabelsAfterInsn;
 
   SmallVector<const MCSymbol *, 8> DebugRangeSymbols;
+
+  /// weakDebugRangeSymbols - In cases where function bodies is not emitted
+  /// into .text section, use function begin marker as anchor for debug range
+  /// offsets. This map keeps track of such symbols and corresponding
+  /// function begin marker symbols.
   DenseMap<const MCSymbol *, const MCSymbol *> WeakDebugRangeSymbols;
 
   /// Previous instruction's location information. This is used to determine