Add assertion checks to nail bugs early.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@3424 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 2 insertions, 0 deletions

diff --git a/include/llvm/PassAnalysisSupport.h b/include/llvm/PassAnalysisSupport.h
index 43c353d4d9..fac8cea545 100644
--- a/include/llvm/PassAnalysisSupport.h
+++ b/include/llvm/PassAnalysisSupport.h
@@ -39,6 +39,7 @@ public:
   }
   template<class PassClass>
   AnalysisUsage &addRequired() {
+    assert(Pass::getClassPassInfo<PassClass>() && "Pass class not registered!");
     Required.push_back(Pass::getClassPassInfo<PassClass>());
     return *this;
   }
@@ -53,6 +54,7 @@ public:
 
   template<class PassClass>
   AnalysisUsage &addPreserved() {
+    assert(Pass::getClassPassInfo<PassClass>() && "Pass class not registered!");
     Preserved.push_back(Pass::getClassPassInfo<PassClass>());
     return *this;
   }