From 26f8a40b510cd68b7bd8aa1e596f37d52fecc008 Mon Sep 17 00:00:00 2001
From: Chris Lattner <sabre@nondot.org>
Date: Wed, 27 Mar 2002 00:52:57 +0000
Subject: Allow isa<DSNode>(..) Simplification routines return true on change

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@1996 91177308-0d34-0410-b5e6-96231b3b80d8
---
 include/llvm/Analysis/DataStructure.h               | 5 +++--
 include/llvm/Analysis/DataStructure/DataStructure.h | 5 +++--
 2 files changed, 6 insertions(+), 4 deletions(-)

(limited to 'include')

diff --git a/include/llvm/Analysis/DataStructure.h b/include/llvm/Analysis/DataStructure.h
index d845303..55029b2 100644
--- a/include/llvm/Analysis/DataStructure.h
+++ b/include/llvm/Analysis/DataStructure.h
@@ -153,6 +153,7 @@ public:
     FieldLinks.clear();
   }
 
+  static bool classof(const DSNode *N) { return true; }
 protected:
   virtual DSNode *cloneImpl() const = 0;
   virtual void mapNode(std::map<const DSNode*, DSNode*> &NodeMap,
@@ -303,8 +304,8 @@ class FunctionDSGraph {
   // as the data structure graph itself.
   //
   PointerValSet cloneFunctionIntoSelf(const FunctionDSGraph &G, bool ValueMap);
-  void RemoveUnreachableShadowNodes();
-  void UnlinkUndistinguishableShadowNodes();
+  bool RemoveUnreachableShadowNodes();
+  bool UnlinkUndistinguishableShadowNodes();
 public:
   FunctionDSGraph(Function *F);
   FunctionDSGraph(const FunctionDSGraph &DSG);
diff --git a/include/llvm/Analysis/DataStructure/DataStructure.h b/include/llvm/Analysis/DataStructure/DataStructure.h
index d845303..55029b2 100644
--- a/include/llvm/Analysis/DataStructure/DataStructure.h
+++ b/include/llvm/Analysis/DataStructure/DataStructure.h
@@ -153,6 +153,7 @@ public:
     FieldLinks.clear();
   }
 
+  static bool classof(const DSNode *N) { return true; }
 protected:
   virtual DSNode *cloneImpl() const = 0;
   virtual void mapNode(std::map<const DSNode*, DSNode*> &NodeMap,
@@ -303,8 +304,8 @@ class FunctionDSGraph {
   // as the data structure graph itself.
   //
   PointerValSet cloneFunctionIntoSelf(const FunctionDSGraph &G, bool ValueMap);
-  void RemoveUnreachableShadowNodes();
-  void UnlinkUndistinguishableShadowNodes();
+  bool RemoveUnreachableShadowNodes();
+  bool UnlinkUndistinguishableShadowNodes();
 public:
   FunctionDSGraph(Function *F);
   FunctionDSGraph(const FunctionDSGraph &DSG);
-- 
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