[all-commits] [llvm/llvm-project] 5f12cc: [NVPTX] Add builtin support for 'nanosleep' PTX in...

[Joseph Huber via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 5f12cc912ac90a2511f2a53c45dc9250945da18c
      https://github.com/llvm/llvm-project/commit/5f12cc912ac90a2511f2a53c45dc9250945da18c
  Author: Joseph Huber <huberjn at outlook.com>
  Date:   2024-01-29 (Mon, 29 Jan 2024)

  Changed paths:
    M clang/include/clang/Basic/BuiltinsNVPTX.def
    M clang/test/CodeGen/builtins-nvptx.c
    M llvm/include/llvm/IR/IntrinsicsNVVM.td
    M llvm/lib/Target/NVPTX/NVPTXIntrinsics.td
    A llvm/test/CodeGen/NVPTX/nanosleep.ll

  Log Message:
  -----------
  [NVPTX] Add builtin support for 'nanosleep' PTX instrunction (#79888)

Summary:
This patch adds a builtin for the `nanosleep` PTX function. It takes
either an immediate or a register and sleeps for [0, 2t] nanoseconds
given t. More information at the documentation:

https://docs.nvidia.com/cuda/parallel-thread-execution/index.html#miscellaneous-instructions-nanosleep