If the tests don't use the in-tree opt, we're liable to see some silly
error messages due to the version mismatch (missing flags, etc).
llvm-svn: 324703
debugger.
When bugpoint hacks at a testcase it may at one point create illegal
debug info metadata that won't even pass the Verifier. A bugpoint
*driver* built with assertions should not assert on it, but reject the
malformed intermediate step and continue to do its job.
llvm-svn: 284490