RegisterScavenging: Fix PR33687

When scavenging for a use in instruction MI, we will reload after
that instruction and hence cannot spill uses/defs of this instruction.

This fixes http://llvm.org/PR33687

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@307352 91177308-0d34-0410-b5e6-96231b3b80d8
3 files changed