Most of bugpoint now only needs to know the pass names.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110534 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/tools/bugpoint/BugDriver.cpp b/tools/bugpoint/BugDriver.cpp
index 7a3339c..6966671 100644
--- a/tools/bugpoint/BugDriver.cpp
+++ b/tools/bugpoint/BugDriver.cpp
@@ -56,12 +56,12 @@
 /// getPassesString - Turn a list of passes into a string which indicates the
 /// command line options that must be passed to add the passes.
 ///
-std::string llvm::getPassesString(const std::vector<const PassInfo*> &Passes) {
+std::string llvm::getPassesString(const std::vector<std::string> &Passes) {
   std::string Result;
   for (unsigned i = 0, e = Passes.size(); i != e; ++i) {
     if (i) Result += " ";
     Result += "-";
-    Result += Passes[i]->getPassArgument();
+    Result += Passes[i];
   }
   return Result;
 }