[PATCH] D34189: AMDGPU: Avoid saving/restoring reserved m0 register

[Matthias Braun via Phabricator via llvm-commits]

MatzeB added a comment.

Would it be okay to XFAIL that part of `attr-amdgpu-num-sgpr.ll`? It is currently blocking me from moving forward with https://reviews.llvm.org/D23097


Repository:
  rL LLVM

https://reviews.llvm.org/D34189