ARM: Do not attempt to modify register class of physregs.

Physregs have no associated register class, do not attempt to modify it
in Thumb2InstrInfo::storeRegToStackSlot()/loadFromStackSlot().

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@271339 91177308-0d34-0410-b5e6-96231b3b80d8
2 files changed