[lit] Add some TODO notes to myself.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@173857 91177308-0d34-0410-b5e6-96231b3b80d8
[mips] Lower EH_RETURN.

Patch by Sasa Stankovic.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@173862 91177308-0d34-0410-b5e6-96231b3b80d8
[mips] Test case for r173862.

Patch by Sasa Stankovic.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@173863 91177308-0d34-0410-b5e6-96231b3b80d8