Replace old bitfield test.

 - Change hardcoded assembly instructions to a use of 'opt' (still
   waiting for someone to yell at me for this).

 - Add some cases to cover behavior fixed by previous commit.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@54413 91177308-0d34-0410-b5e6-96231b3b80d8
1 file changed