[all-commits] [llvm/llvm-project] 7c5808: [NVPTX] Add Intrinsics for discard.* (#128404)

[Abhilash Majumder via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 7c580893ea662b513da71a3da9ae4ab1b2dafc6b
      https://github.com/llvm/llvm-project/commit/7c580893ea662b513da71a3da9ae4ab1b2dafc6b
  Author: Abhilash Majumder <30946547+abhilash1910 at users.noreply.github.com>
  Date:   2025-03-03 (Mon, 03 Mar 2025)

  Changed paths:
    M llvm/docs/NVPTXUsage.rst
    M llvm/include/llvm/IR/IntrinsicsNVVM.td
    M llvm/lib/Target/NVPTX/NVPTXIntrinsics.td
    A llvm/test/CodeGen/NVPTX/discard.ll

  Log Message:
  -----------
  [NVPTX] Add Intrinsics for discard.* (#128404)

[NVPTX] Add  Intrinsics for discard.*
This PR adds intrinsics for all variations of discard.*

* These intrinsics supports generic or global for all variations.
* The lowering is handled from nvvm to nvptx tablegen directly.
* Lit tests are added as part of discard.ll
* The generated PTX is verified with a 12.3 ptxas executable.
* Added docs for these intrinsics in NVPTXUsage.rst.

For more information, refer to the PTX ISA

<https://docs.nvidia.com/cuda/parallel-thread-execution/#data-movement-and-conversion-instructions-discard>_.

---------

Co-authored-by: abmajumder <abmajumder at nvidia.com>
Co-authored-by: gonzalobg <65027571+gonzalobg at users.noreply.github.com>



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