From 1cee94f04111cfd7114979d6dfddce2669c9380d 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.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48476 91177308-0d34-0410-b5e6-96231b3b80d8
---
 lib/Analysis/AliasAnalysisCounter.cpp | 3 +++
 1 file changed, 3 insertions(+)

(limited to 'lib/Analysis/AliasAnalysisCounter.cpp')

diff --git a/lib/Analysis/AliasAnalysisCounter.cpp b/lib/Analysis/AliasAnalysisCounter.cpp
index 374625311f..8b35ea8370 100644
--- a/lib/Analysis/AliasAnalysisCounter.cpp
+++ b/lib/Analysis/AliasAnalysisCounter.cpp
@@ -72,6 +72,9 @@ namespace {
       }
     }
 
+    /// isAnalysis - Return true if this pass is  implementing an analysis pass.
+    virtual bool isAnalysis() const { return true; }
+
     bool runOnModule(Module &M) {
       this->M = &M;
       InitializeAliasAnalysis(this);
-- 
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