[llvm] [NVPTX] Add sparse MMA intrinsics (PR #150950)

[Pradeep Kumar via llvm-commits]

schwarzschild-radius wrote:

The build seems to be failing in the ptxas verify step with the following error:

```
# | ptxas c:\buildbot\as-builder-8\llvm-nvptx64-nvidia-win\build\lit-tmp-u8i0xye3/tmpxft_0000352c_00000000-0_stdin, line 41681; info    : Advisory: Modifier '.sp::ordered_metadata' should be used on instruction 'mma' instead of modifier '.sp' as it is expected to have substantially reduced performance on some future architectures
# | ptxas c:\buildbot\as-builder-8\llvm-nvptx64-nvidia-win\build\lit-tmp-u8i0xye3/tmpxft_0000352c_00000000-0_stdin, line 41681; error   : Argument 6 of instruction 'Sparse mma': value '3' out of range, expected to be in range [0..0]
# | ptxas c:\buildbot\as-builder-8\llvm-nvptx64-nvidia-win\build\lit-tmp-u8i0xye3/tmpxft_0000352c_00000000-0_stdin, line 41729; info    : Advisory: Modifier '.sp::ordered_metadata' should be used on instruction 'mma' instead of modifier '.sp' as it is expected to have substantially reduced performance on some future architectures
# | ptxas c:\buildbot\as-builder-8\llvm-nvptx64-nvidia-win\build\lit-tmp-u8i0xye3/tmpxft_0000352c_00000000-0_stdin, line 41777; info    : Advisory: Modifier '.sp::ordered_metadata' should be used on instruction 'mma' instead of modifier '.sp' as it is expected to have substantially reduced performance on some future architectures
# | ptxas c:\buildbot\as-builder-8\llvm-nvptx64-nvidia-win\build\lit-tmp-u8i0xye3/tmpxft_0000352c_00000000-0_stdin, line 41777; error   : Argument 6 of instruction 'Sparse mma': value '1' out of range, expected to be in range [0..0]
# | ptxas c:\buildbot\as-builder-8\llvm-nvptx64-nvidia-win\build\lit-tmp-u8i0xye3/tmpxft_0000352c_00000000-0_stdin, line 41825; info    : Advisory: Modifier '.sp::ordered_metadata' should be used on instruction 'mma' instead of modifier '.sp' as it is expected to have substantially reduced performance on some future architectures
# | ptxas c:\buildbot\as-builder-8\llvm-nvptx64-nvidia-win\build\lit-tmp-u8i0xye3/tmpxft_0000352c_00000000-0_stdin, line 41825; error   : Argument 6 of instruction 'Sparse mma': value '2' out of range, expected to be in range [0..0]
# | ptxas c:\buildbot\as-builder-8\llvm-nvptx64-nvidia-win\build\lit-tmp-u8i0xye3/tmpxft_0000352c_00000000-0_stdin, line 41873; info    : Advisory: Modifier '.sp::ordered_metadata' should be used on instruction 'mma' instead of modifier '.sp' as it is expected to have substantially reduced performance on some future architectures
# | ptxas c:\buildbot\as-builder-8\llvm-nvptx64-nvidia-win\build\lit-tmp-u8i0xye3/tmpxft_0000352c_00000000-0_stdin, line 41873; error   : Argument 6 of instruction 'Sparse mma': value '3' out of range, expected to be in range [0..0]
```

@kvederni has raised another PR (https://github.com/llvm/llvm-project/pull/154984) to fix it

https://github.com/llvm/llvm-project/pull/150950