[llvm] [NVPTX] support packed f32 instructions for sm_100+ (PR #126337)

[Bangtian Liu via llvm-commits]

bangtianliu wrote:

> > It appears that the patch may have started triggering an assertion somewhere in `MachineLICM`: https://godbolt.org/z/18hssYfME
> > @rupprecht how much time do we have to figure out if it's something we can fix forward?
> 
> Sometime in the next couple of days should be OK. Beyond that, i.e. next week, it might be better to go for a revert.
> 
> @bangtianliu, I notice you reverted this in iree. Do you have more details on what kind of failure you saw? Was it anything like https://godbolt.org/z/18hssYfME?

Here is the link to the CI error: https://github.com/iree-org/iree/actions/runs/16273907625/job/45959015129?pr=21364#step:6:19287 in IREE when I was trying to do LLVM integration. 

https://github.com/llvm/llvm-project/pull/126337