[llvm] [NVPTX] Do not run the NVVMReflect pass as part of the normal pipeline (PR #121834)

[Joseph Huber via llvm-commits]

jhuber6 wrote:

> I just checked in [e7a83fc](https://github.com/llvm/llvm-project/commit/e7a83fc74db78445c36a27f113e9b045f90f699a) to fix a warning from this PR.

Was in the process of doing that myself, thanks for fixing it so fast.

https://github.com/llvm/llvm-project/pull/121834