Delete dead code.

The compact unwind info is only used by code that knows it is supported.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@211412 91177308-0d34-0410-b5e6-96231b3b80d8
Support: Write ScaledNumbers::getLg{,Floor,Ceiling}()

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@211413 91177308-0d34-0410-b5e6-96231b3b80d8
Support: ScaledNumber: Fix inconsistent test names

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@211414 91177308-0d34-0410-b5e6-96231b3b80d8
Use a helper function and clang-format.

No functionality change.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@211415 91177308-0d34-0410-b5e6-96231b3b80d8
Use compact unwind for the iOS simulator.

Another step in fixing pr19185.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@211416 91177308-0d34-0410-b5e6-96231b3b80d8