[mips] Guard some macro expansions properly

Reviewers: atanasyan, abeserminji

Differential Revision: https://reviews.llvm.org/D45565


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@330315 91177308-0d34-0410-b5e6-96231b3b80d8
4 files changed