From 864970e9b629e34e39f1a8b80c01d196ebf706de Mon Sep 17 00:00:00 2001
From: Devang Patel <dpatel@apple.com>
Date: Tue, 18 Mar 2008 00:39:19 +0000
Subject: Identify Analysis pass. Do not run analysis pass again if analysis
 info is still available. This fixes PR1441.

llvm-svn: 48476
---
 llvm/lib/Analysis/AliasDebugger.cpp | 3 +++
 1 file changed, 3 insertions(+)

(limited to 'llvm/lib/Analysis/AliasDebugger.cpp')

diff --git a/llvm/lib/Analysis/AliasDebugger.cpp b/llvm/lib/Analysis/AliasDebugger.cpp
index dd766e90d79..6b534e94be1 100644
--- a/llvm/lib/Analysis/AliasDebugger.cpp
+++ b/llvm/lib/Analysis/AliasDebugger.cpp
@@ -43,6 +43,9 @@ namespace {
     static char ID; // Class identification, replacement for typeinfo
     AliasDebugger() : ModulePass((intptr_t)&ID) {}
 
+    /// isAnalysis - Return true if this pass is  implementing an analysis pass.
+    virtual bool isAnalysis() const { return true; }
+
     bool runOnModule(Module &M) {
       InitializeAliasAnalysis(this);                 // set up super class
 
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