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
diff --git a/lib/Analysis/AliasSetTracker.cpp b/lib/Analysis/AliasSetTracker.cpp
index d5038ea..69cf4b3 100644
--- a/lib/Analysis/AliasSetTracker.cpp
+++ b/lib/Analysis/AliasSetTracker.cpp
@@ -558,6 +558,9 @@
AU.addRequired<AliasAnalysis>();
}
+ /// isAnalysis - Return true if this pass is implementing an analysis pass.
+ virtual bool isAnalysis() const { return true; }
+
virtual bool runOnFunction(Function &F) {
Tracker = new AliasSetTracker(getAnalysis<AliasAnalysis>());