[all-commits] [llvm/llvm-project] 3e5d50: [NVPTX] Add cta_group support to TMA G2S intrinsic...

[Durgadoss R via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 3e5d50f9c61bb266ab17919ab5209c7b08520aff
      https://github.com/llvm/llvm-project/commit/3e5d50f9c61bb266ab17919ab5209c7b08520aff
  Author: Durgadoss R <durgadossr at nvidia.com>
  Date:   2025-06-12 (Thu, 12 Jun 2025)

  Changed paths:
    M llvm/docs/NVPTXUsage.rst
    M llvm/include/llvm/IR/IntrinsicsNVVM.td
    M llvm/include/llvm/IR/NVVMIntrinsicUtils.h
    M llvm/lib/IR/AutoUpgrade.cpp
    M llvm/lib/Target/NVPTX/MCTargetDesc/NVPTXInstPrinter.cpp
    M llvm/lib/Target/NVPTX/MCTargetDesc/NVPTXInstPrinter.h
    M llvm/lib/Target/NVPTX/NVPTXISelDAGToDAG.cpp
    M llvm/lib/Target/NVPTX/NVPTXIntrinsics.td
    M llvm/lib/Target/NVPTX/NVPTXSubtarget.h
    M llvm/test/Assembler/auto_upgrade_nvvm_intrinsics.ll
    A llvm/test/CodeGen/NVPTX/cp-async-bulk-tensor-g2s-1cta.ll
    A llvm/test/CodeGen/NVPTX/cp-async-bulk-tensor-g2s-2cta.ll
    A llvm/test/CodeGen/NVPTX/cp-async-bulk-tensor-g2s-invalid.ll

  Log Message:
  -----------
  [NVPTX] Add cta_group support to TMA G2S intrinsics (#143178)

This patch extends the TMA G2S intrinsics with the
support for cta_group::1/2 available from Blackwell onwards.
The existing intrinsics are auto-upgraded with a default
value of '0' for the `cta_group` flag operand.

* lit tests are added for all combinations of the newer variants.
* Negative tests are added to validate the error-handling 
   when the value of the cta_group flag falls out-of-range.
* The generated PTX is verified with a 12.8 ptxas executable.

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



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