[all-commits] [llvm/llvm-project] d5e969: [NVPTX] Add elect.sync Intrinsic (#104780)

[Durgadoss R via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: d5e9691509aa774d1acedc4d3fa2d497757a2d6d
      https://github.com/llvm/llvm-project/commit/d5e9691509aa774d1acedc4d3fa2d497757a2d6d
  Author: Durgadoss R <durgadossr at nvidia.com>
  Date:   2024-08-20 (Tue, 20 Aug 2024)

  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/elect.ll

  Log Message:
  -----------
  [NVPTX] Add elect.sync Intrinsic (#104780)

This patch adds an NVVM intrinsic and NVPTX codegen for the elect.sync
PTX instruction. Lit tests are
added in elect.ll and verified through ptxas.

PTX ISA reference:

https://docs.nvidia.com/cuda/parallel-thread-execution/index.html#parallel-synchronization-and-communication-instructions-elect-sync

Signed-off-by: Durgadoss R <durgadossr at nvidia.com>



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