Remove FIXME that had snuck in.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@201745 91177308-0d34-0410-b5e6-96231b3b80d8
Format.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@201746 91177308-0d34-0410-b5e6-96231b3b80d8
Add support for hashing DW_FORM_sdata and a small testcase.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@201747 91177308-0d34-0410-b5e6-96231b3b80d8