Don't allow per-register spill size and alignment.

These values were not used for anything. Spill size and alignment is a property
of the register class, not the register.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@129906 91177308-0d34-0410-b5e6-96231b3b80d8
3 files changed