From: Devang Patel <dpatel@apple.com>
Date: Fri, 13 Nov 2009 21:45:04 +0000 (+0000)
Subject: Do not use value handle to wrap MDNode in DIDescriptor.
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=a2b3cdc21f51d0e24310878b0c759ec48b5e6749;p=oota-llvm.git

Do not use value handle to wrap MDNode in DIDescriptor.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@88700 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/include/llvm/Analysis/DebugInfo.h b/include/llvm/Analysis/DebugInfo.h
index b10a545b0ae..4321278903e 100644
--- a/include/llvm/Analysis/DebugInfo.h
+++ b/include/llvm/Analysis/DebugInfo.h
@@ -44,9 +44,11 @@ namespace llvm {
   class Instruction;
   class LLVMContext;
 
+  /// DIDescriptor - A thin wraper around MDNode to access encoded debug info. This should not
+  /// be stored in a container, because underly MDNode may change in certain situations.
   class DIDescriptor {
   protected:
-    TrackingVH<MDNode> DbgNode;
+    MDNode  *DbgNode;
 
     /// DIDescriptor constructor.  If the specified node is non-null, check
     /// to make sure that the tag in the descriptor matches 'RequiredTag'.  If