[AMDGPU] Factored out common part of GCNRPTracker::reset()

Differential Revision: https://reviews.llvm.org/D47664

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@333931 91177308-0d34-0410-b5e6-96231b3b80d8
2 files changed