Change create*Pass factory functions to return Pass* instead of
LoopPass*.
 - Although less precise, this means they can be used in clients
   without RTTI (who would otherwise need to include LoopPass.h, which
   eventually includes things using dynamic_cast). This was the
   simplest solution that presented itself, but I am happy to use a
   better one if available.

llvm-svn: 58010
diff --git a/llvm/lib/Transforms/Scalar/LoopDeletion.cpp b/llvm/lib/Transforms/Scalar/LoopDeletion.cpp
index 74190f5..86edcfa 100644
--- a/llvm/lib/Transforms/Scalar/LoopDeletion.cpp
+++ b/llvm/lib/Transforms/Scalar/LoopDeletion.cpp
@@ -60,7 +60,7 @@
 char LoopDeletion::ID = 0;
 static RegisterPass<LoopDeletion> X("loop-deletion", "Delete dead loops");
 
-LoopPass* llvm::createLoopDeletionPass() {
+Pass* llvm::createLoopDeletionPass() {
   return new LoopDeletion();
 }