Check operands of `MDSubprogram`s in the verifier, and update the
accessors and factory functions to use more specific types.
There were a lot of broken testcases, which I fixed in r233466. If you
have out-of-tree tests for debug info, you probably need similar changes
to the ones I made there.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@233559 91177308-0d34-0410-b5e6-96231b3b80d8
bd38c8d788