Add virtual desctructor to FrameEntry to avoid error on delete-non-virtual-dtor


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@174483 91177308-0d34-0410-b5e6-96231b3b80d8
Remove this test in the meantime, since it won't pass on Atom. Atom uses lea
to move the stack pointer in prologs/epilogs. I will fix the test and add it
back later.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@174484 91177308-0d34-0410-b5e6-96231b3b80d8