[llvm] [NVPTX] Add intrinsics for prefetch.* (PR #125887)

[Mikhail Goncharov via llvm-commits]

metaflow wrote:

Hi @abhilash1910, the new test fails for me as
```
ptxas warning : incompatible redefinition for option 'gpu-name', the last value of this option was used
ptxas /tmp/tmpxft_000a5e18_00000000-0_stdin, line 19; error   : Unknown modifier '.evictnormal'
ptxas /tmp/tmpxft_000a5e18_00000000-0_stdin, line 20; error   : Unknown modifier '.evictnormal'
ptxas /tmp/tmpxft_000a5e18_00000000-0_stdin, line 33; error   : Unknown modifier '.evictnormal'
ptxas /tmp/tmpxft_000a5e18_00000000-0_stdin, line 34; error   : Unknown modifier '.evictnormal'
ptxas /tmp/tmpxft_000a5e18_00000000-0_stdin, line 35; error   : Unknown modifier '.evictlast'
ptxas /tmp/tmpxft_000a5e18_00000000-0_stdin, line 36; error   : Unknown modifier '.evictlast'
ptxas /tmp/tmpxft_000a5e18_00000000-0_stdin, line 49; error   : Unknown modifier '.evictnormal'
ptxas /tmp/tmpxft_000a5e18_00000000-0_stdin, line 50; error   : Unknown modifier '.evictnormal'
ptxas /tmp/tmpxft_000a5e18_00000000-0_stdin, line 63; error   : Unknown modifier '.evictnormal'
ptxas fatal   : Ptx assembly aborted due to errors
```

ptxas --version is
```
ptxas: NVIDIA (R) Ptx optimizing assembler
Copyright (c) 2005-2024 NVIDIA Corporation
Built on Thu_Mar_28_02:14:54_PDT_2024
Cuda compilation tools, release 12.4, V12.4.131
Build cuda_12.4.r12.4/compiler.34097967_0
```

I have attached the full ptx text
[prefetch.txt](https://github.com/user-attachments/files/18763610/prefetch.txt)

what might be the issue?

https://github.com/llvm/llvm-project/pull/125887