[all-commits] [llvm/llvm-project] 6c706e: [MLIR][NVVM] Add explicit aligned attribute to nvv...

[xys-syx via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 6c706ed5896d10b2a900d5860b80851f01cfe943
      https://github.com/llvm/llvm-project/commit/6c706ed5896d10b2a900d5860b80851f01cfe943
  Author: xys-syx <xuyuansui at outlook.com>
  Date:   2026-06-09 (Tue, 09 Jun 2026)

  Changed paths:
    M mlir/include/mlir/Dialect/LLVMIR/NVVMOps.td
    M mlir/lib/Dialect/LLVMIR/IR/NVVMDialect.cpp
    M mlir/test/Dialect/LLVMIR/nvvm.mlir
    M mlir/test/Target/LLVMIR/nvvm/barrier.mlir

  Log Message:
  -----------
  [MLIR][NVVM] Add explicit aligned attribute to nvvm.barrier and nvvm.barrier.reduction (#200745)

This PR according to the third PR commitments in #192203 

This PR adds an explicit aligned boolean attribute to `nvvm.barrier`,
defaulting to true to preserve the existing semantic default, and
extends the op's LLVM IR lowering to pick between the `.aligned` and
non-`.aligned` spellings of the `@llvm.nvvm.barrier.cta.*` intrinsic
family.

Notes on using `BoolAttr` instead of UnitAttr: `nvvm.barrier`'s existing
lowering always emits an aligned intrinsic variant. Making aligned a
BoolAttr with default true captures that as the op's default, and the
`custom<Aligned>` described below only emits the keyword when
non-default.

(I am not able to merge branches, please help me)



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