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

1 files changed, 4 insertions, 0 deletions

diff --git a/lib/Analysis/InstCount.cpp b/lib/Analysis/InstCount.cpp
index 78c4a377b0..08a27a66b3 100644
--- a/lib/Analysis/InstCount.cpp
+++ b/lib/Analysis/InstCount.cpp
@@ -51,6 +51,10 @@ namespace {
       abort();
     }
   public:
+
+    /// isAnalysis - Return true if this pass is  implementing an analysis pass.
+    virtual bool isAnalysis() const { return true; }
+
     static char ID; // Pass identification, replacement for typeid
     InstCount() : FunctionPass((intptr_t)&ID) {}