Stuart Adams 02c2468864 [Clang][NVPTX] Add NVPTX intrinsics and builtins for CUDA PTX cp.async instructions ...

Adds NVPTX builtins and intrinsics for the CUDA PTX `cp.async` instructions for
`sm_80` architecture or newer.

PTX ISA description of `cp.async`:
https://docs.nvidia.com/cuda/parallel-thread-execution/index.html#data-movement-and-conversion-instructions-asynchronous-copy
https://docs.nvidia.com/cuda/parallel-thread-execution/index.html#parallel-synchronization-and-communication-instructions-cp-async-mbarrier-arrive

Authored-by: Stuart Adams <stuart.adams@codeplay.com>
Co-Authored-by: Alexander Johnston <alexander@codeplay.com>

Differential Revision: https://reviews.llvm.org/D100394

2021-05-17 09:46:59 -07:00

4.3 KiB

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