Add doInitialization and doFinalization methods to ModulePass's, to allow them to be re-initialized and reused on multiple Module's.

Patch by Pedro Artigas.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@168008 91177308-0d34-0410-b5e6-96231b3b80d8

tools/llvm-stress/llvm-stress.cpp

@@ -713,7 +713,9 @@ int main(int argc, char **argv) {
   PassManager Passes;
   Passes.add(createVerifierPass());
   Passes.add(createPrintModulePass(&Out->os()));
+  Passes.doInitialization();
   Passes.run(*M.get());
+  Passes.doFinalization();
   Out->keep();
 
   return 0;