[llvm] [NVPTX] Lower LLVM masked vector loads and stores to PTX (PR #159387)

[Drew Kersnar via llvm-commits]

dakersnar wrote:

Missed something on windows, there are test failures here: https://lab.llvm.org/buildbot/#/builders/155/builds/15135/steps/7/logs/stdio

I need to add an mattr argument for the sm_90 version of the test commands. I can put up a quick fix now.

https://github.com/llvm/llvm-project/pull/159387