[COFF, ARM64] Add _InterlockedCompareExchangePointer_nf intrinsic Reviewers: rnk, mstorsjo, compnerd, TomTan, haripul, efriedma Reviewed By: efriedma Subscribers: efriedma, kristof.beyls, chrib, jfb, cfe-commits Differential Revision: https://reviews.llvm.org/D52807 git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@343881 91177308-0d34-0410-b5e6-96231b3b80d8