From: Chris Lattner <sabre@nondot.org>
Date: Tue, 1 Jul 2003 17:10:50 +0000 (+0000)
Subject: Fix major problem that was causing all kinds of nasty foldings
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=985d31215c2c3e5b2e8f7d9755158670f2c38cd4;p=oota-llvm.git

Fix major problem that was causing all kinds of nasty foldings


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@7034 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/include/llvm/Analysis/DSSupport.h b/include/llvm/Analysis/DSSupport.h
index 1e886fe7c26..910d1cec7bd 100644
--- a/include/llvm/Analysis/DSSupport.h
+++ b/include/llvm/Analysis/DSSupport.h
@@ -60,6 +60,7 @@ public:
   }
   ~DSNodeHandle() { setNode((DSNode*)0); }
   DSNodeHandle &operator=(const DSNodeHandle &H) {
+    if (&H != this) return *this;  // Don't set offset to 0 if self assigning.
     Offset = 0; setNode(H.getNode()); Offset = H.Offset;
     return *this;
   }
diff --git a/include/llvm/Analysis/DataStructure/DSSupport.h b/include/llvm/Analysis/DataStructure/DSSupport.h
index 1e886fe7c26..910d1cec7bd 100644
--- a/include/llvm/Analysis/DataStructure/DSSupport.h
+++ b/include/llvm/Analysis/DataStructure/DSSupport.h
@@ -60,6 +60,7 @@ public:
   }
   ~DSNodeHandle() { setNode((DSNode*)0); }
   DSNodeHandle &operator=(const DSNodeHandle &H) {
+    if (&H != this) return *this;  // Don't set offset to 0 if self assigning.
     Offset = 0; setNode(H.getNode()); Offset = H.Offset;
     return *this;
   }