[all-commits] [llvm/llvm-project] 941d2f: [acc][mlir] Add 'if-condition' to 'atomic' operati...

[Erich Keane via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 941d2fdb947f6613607ca03b1b15218fbaccd9a4
      https://github.com/llvm/llvm-project/commit/941d2fdb947f6613607ca03b1b15218fbaccd9a4
  Author: Erich Keane <ekeane at nvidia.com>
  Date:   2025-10-20 (Mon, 20 Oct 2025)

  Changed paths:
    M flang/lib/Lower/OpenACC.cpp
    M mlir/include/mlir/Dialect/OpenACC/OpenACCOps.td
    M mlir/lib/Dialect/OpenACC/IR/OpenACC.cpp
    M mlir/test/Dialect/OpenACC/ops.mlir

  Log Message:
  -----------
  [acc][mlir] Add 'if-condition' to 'atomic' operations. (#164003)

OpenACC 3.4 includes the ability to add an 'if' to an atomic operation.

>From the change log:
`Added the if clause to the atomic construct to enable conditional
atomic operations based867
on the parallelism strategy employed`

In 2.12, the C/C++ grammar is changed to say: 
`#pragma acc atomic [ atomic-clause ] [ if( condition ) ] new-line`

With corresponding changes to the Fortran standard

This patch adds support to this for the dialect, so that Clang can use
it soon.



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