input filename so that opt doesn't print the input filename in the output so that grep lines in the tests don't unintentionally match strings in the input filename. llvm-svn: 81537
of using llvm-as, now that opt supports this. llvm-svn: 81226
nodes. FoldSingleEntryPHINodes deletes the PHI, so there is no need to delete it afterward. llvm-svn: 60653
